[ai] Expose totalUsage and finishReason on DurableAgent stream result

[VaguelySerious]

Summary

DurableAgentStreamResult (the awaited return of agent.stream()) is missing totalUsage and finishReason. Both fields are already computed in the runtime and passed to the onFinish callback, so the omission from the result is asymmetric and diverges from the AI SDK's GenerateTextResult/StreamTextResult which expose them directly.

This adds them to the interface and to all three return sites (early-abort, paused-tools, and the final return), reusing the existing aggregateUsage(steps) helper.

See also vercel/ai#14786

Test plan

• New regression test in durable-agent-compat.test.ts asserts result.totalUsage and result.finishReason after a normal stream
• Existing 187 tests still pass (188 with the new one)
• Build passes (pnpm build in packages/ai)

🤖 Generated with Claude Code

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-astro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-express-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-fastify-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-hono-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nitro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nuxt-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-vite-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-docs	Ready	Preview, Comment, Open in v0	Jun 26, 2026 11:53pm
workflow-swc-playground	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-tarballs	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-web	Ready	Preview, Comment	Jun 26, 2026 11:53pm

[changeset-bot]

🦋 Changeset detected

Latest commit: 476187c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@workflow/ai	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1442	0	230	1672
✅ 💻 Local Development	1605	0	219	1824
✅ 📦 Local Production	1605	0	219	1824
✅ 🐘 Local Postgres	1593	0	231	1824
✅ 🪟 Windows	152	0	0	152
✅ 📋 Other	885	0	179	1064
Total	7282	0	1078	8360

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	125	0	27
✅ example	125	0	27
✅ express	125	0	27
✅ fastify	125	0	27
✅ hono	125	0	27
✅ nextjs-turbopack	149	0	3
✅ nextjs-webpack	149	0	3
✅ nitro	125	0	27
✅ nuxt	125	0	27
✅ sveltekit	144	0	8
✅ vite	125	0	27

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	126	0	26
✅ express-stable	126	0	26
✅ fastify-stable	126	0	26
✅ hono-stable	126	0	26
✅ nextjs-turbopack-canary	132	0	20
✅ nextjs-turbopack-stable	151	0	1
✅ nextjs-webpack-canary	132	0	20
✅ nextjs-webpack-stable	151	0	1
✅ nitro-stable	126	0	26
✅ nuxt-stable	126	0	26
✅ sveltekit-stable	145	0	7
✅ vite-stable	126	0	26

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	152	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	127	0	25
✅ e2e-local-dev-tanstack-start-	127	0	25
✅ e2e-local-postgres-nest-stable	126	0	26
✅ e2e-local-postgres-tanstack-start-	126	0	26
✅ e2e-local-prod-nest-stable	127	0	25
✅ e2e-local-prod-tanstack-start-	127	0	25
✅ e2e-vercel-prod-tanstack-start	125	0	27

---

📋 View full workflow run

[github-actions]

📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.043s (+23.1% 🔺)	1.005s (~)	0.962s	10	1.00x
💻 Local	Express	0.045s (-8.1% 🟢)	1.006s (~)	0.961s	10	1.05x
💻 Local	Next.js (Turbopack)	0.048s (-4.0%)	1.007s (~)	0.959s	10	1.12x
🐘 Postgres	Next.js (Turbopack)	0.058s (-50.6% 🟢)	1.012s (-3.9%)	0.954s	10	1.35x
🐘 Postgres	Express	0.059s (-6.5% 🟢)	1.011s (~)	0.952s	10	1.36x
🐘 Postgres	Nitro	0.066s (-6.9% 🟢)	1.013s (~)	0.947s	10	1.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.209s (-0.5%)	1.724s (+15.3% 🔺)	1.515s	10	1.00x
▲ Vercel	Next.js (Turbopack)	0.255s (-53.5% 🟢)	2.054s (+1.1%)	1.800s	10	1.22x
▲ Vercel	Nitro	0.257s (+30.0% 🔺)	1.832s (+7.3% 🔺)	1.575s	10	1.23x

🔍 Observability: Express | Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.076s (+0.9%)	2.008s (~)	0.932s	10	1.00x
💻 Local	Express	1.083s (~)	2.007s (~)	0.924s	10	1.01x
💻 Local	Next.js (Turbopack)	1.084s (~)	2.006s (~)	0.922s	10	1.01x
🐘 Postgres	Express	1.092s (~)	2.010s (~)	0.918s	10	1.01x
🐘 Postgres	Nitro	1.094s (-0.6%)	2.009s (~)	0.916s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.101s (+1.6%)	2.010s (~)	0.909s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.435s (+2.0%)	2.900s (+2.4%)	1.466s	10	1.00x
▲ Vercel	Nitro	1.523s (+10.2% 🔺)	3.036s (-2.3%)	1.513s	10	1.06x
▲ Vercel	Next.js (Turbopack)	2.444s (+13.8% 🔺)	4.123s (+16.1% 🔺)	1.679s	10	1.70x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.420s (~)	11.022s (~)	0.601s	3	1.00x
🐘 Postgres	Nitro	10.435s (-0.9%)	11.015s (~)	0.581s	3	1.00x
💻 Local	Next.js (Turbopack)	10.442s (~)	11.024s (~)	0.582s	3	1.00x
💻 Local	Express	10.451s (~)	11.023s (~)	0.572s	3	1.00x
🐘 Postgres	Express	10.457s (~)	11.021s (~)	0.564s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.540s (-1.6%)	11.020s (~)	0.480s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	12.664s (+7.0% 🔺)	14.760s (+11.3% 🔺)	2.096s	3	1.00x
▲ Vercel	Express	12.909s (+9.8% 🔺)	14.630s (+5.3% 🔺)	1.722s	3	1.02x
▲ Vercel	Next.js (Turbopack)	13.171s (+4.1%)	15.097s (+8.9% 🔺)	1.926s	2	1.04x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	13.547s (~)	14.027s (~)	0.480s	5	1.00x
🐘 Postgres	Nitro	13.569s (-1.1%)	14.021s (~)	0.452s	5	1.00x
🐘 Postgres	Express	13.571s (-0.8%)	14.019s (~)	0.449s	5	1.00x
🐘 Postgres	Next.js (Turbopack)	13.585s (~)	14.022s (~)	0.437s	5	1.00x
💻 Local	Express	13.596s (~)	14.028s (~)	0.432s	5	1.00x
💻 Local	Next.js (Turbopack)	13.655s (~)	14.027s (~)	0.372s	5	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	18.355s (-1.3%)	20.041s (-2.6%)	1.686s	4	1.00x
▲ Vercel	Express	18.872s (+10.6% 🔺)	20.504s (+8.3% 🔺)	1.631s	3	1.03x
▲ Vercel	Next.js (Turbopack)	19.242s (+5.4% 🔺)	21.587s (+6.9% 🔺)	2.345s	3	1.05x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.032s (+2.0%)	12.648s (+5.1% 🔺)	0.617s	8	1.00x
🐘 Postgres	Nitro	12.098s (-1.6%)	13.019s (~)	0.921s	7	1.01x
💻 Local	Express	12.158s (-1.6%)	13.024s (~)	0.866s	7	1.01x
🐘 Postgres	Next.js (Turbopack)	12.218s (-1.3%)	13.016s (~)	0.797s	7	1.02x
🐘 Postgres	Express	12.330s (+1.8%)	13.021s (+1.2%)	0.691s	7	1.02x
💻 Local	Next.js (Turbopack)	12.385s (~)	13.027s (~)	0.642s	7	1.03x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	22.509s (+26.2% 🔺)	24.128s (+23.8% 🔺)	1.619s	4	1.00x
▲ Vercel	Express	23.401s (+29.5% 🔺)	25.075s (+24.1% 🔺)	1.674s	4	1.04x
▲ Vercel	Next.js (Turbopack)	24.310s (+23.9% 🔺)	26.317s (+25.3% 🔺)	2.007s	4	1.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.163s (-1.3%)	2.008s (~)	0.845s	15	1.00x
🐘 Postgres	Nitro	1.168s (-2.8%)	2.007s (~)	0.839s	15	1.00x
🐘 Postgres	Next.js (Turbopack)	1.223s (-9.9% 🟢)	2.008s (-1.2%)	0.784s	15	1.05x
💻 Local	Nitro	1.384s (+6.8% 🔺)	2.006s (~)	0.622s	15	1.19x
💻 Local	Next.js (Turbopack)	1.393s (-0.6%)	2.006s (~)	0.613s	15	1.20x
💻 Local	Express	1.417s (~)	2.007s (~)	0.590s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.812s (+47.0% 🔺)	4.763s (+25.3% 🔺)	1.951s	7	1.00x
▲ Vercel	Nitro	3.188s (+45.2% 🔺)	4.695s (+29.3% 🔺)	1.506s	7	1.13x
▲ Vercel	Next.js (Turbopack)	3.872s (+15.0% 🔺)	5.654s (+17.6% 🔺)	1.783s	6	1.38x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.310s (-3.9%)	2.393s (-4.6%)	1.083s	13	1.00x
🐘 Postgres	Express	1.310s (+1.2%)	2.316s (-10.6% 🟢)	1.006s	13	1.00x
🐘 Postgres	Next.js (Turbopack)	1.329s (-5.4% 🟢)	3.011s (~)	1.682s	10	1.01x
💻 Local	Express	2.442s (-11.7% 🟢)	3.009s (~)	0.567s	10	1.86x
💻 Local	Nitro	2.509s (+4.1%)	3.009s (~)	0.500s	10	1.92x
💻 Local	Next.js (Turbopack)	2.519s (-3.4%)	3.109s (+3.3%)	0.590s	10	1.92x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.900s (+4.4%)	4.510s (+0.6%)	1.609s	7	1.00x
▲ Vercel	Nitro	3.058s (+22.0% 🔺)	4.827s (+31.1% 🔺)	1.769s	7	1.05x
▲ Vercel	Next.js (Turbopack)	5.219s (+48.9% 🔺)	7.116s (+52.2% 🔺)	1.897s	5	1.80x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.562s (-6.1% 🟢)	4.138s (-3.8%)	2.576s	8	1.00x
🐘 Postgres	Express	1.564s (-1.2%)	4.012s (-3.0%)	2.448s	8	1.00x
🐘 Postgres	Next.js (Turbopack)	2.921s (+2.3%)	5.848s (+9.3% 🔺)	2.927s	6	1.87x
💻 Local	Nitro	5.751s (+5.3% 🔺)	6.213s (+3.2%)	0.461s	5	3.68x
💻 Local	Express	6.057s (-3.8%)	6.815s (~)	0.759s	5	3.88x
💻 Local	Next.js (Turbopack)	6.652s (-10.2% 🟢)	7.767s (-8.8% 🟢)	1.115s	4	4.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.971s (+28.7% 🔺)	5.501s (+15.5% 🔺)	1.530s	6	1.00x
▲ Vercel	Nitro	4.357s (+54.4% 🔺)	6.158s (+30.1% 🔺)	1.800s	6	1.10x
▲ Vercel	Next.js (Turbopack)	5.269s (+4.0%)	7.268s (+11.7% 🔺)	1.999s	5	1.33x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.163s (-2.7%)	2.007s (~)	0.844s	15	1.00x
🐘 Postgres	Express	1.171s (-20.0% 🟢)	2.008s (-9.6% 🟢)	0.837s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.188s (-8.4% 🟢)	2.008s (-1.0%)	0.820s	15	1.02x
💻 Local	Nitro	1.383s (+16.8% 🔺)	2.007s (~)	0.623s	15	1.19x
💻 Local	Express	1.429s (-1.0%)	2.007s (~)	0.577s	15	1.23x
💻 Local	Next.js (Turbopack)	1.461s (-9.9% 🟢)	2.008s (-3.2%)	0.547s	15	1.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.691s (+32.5% 🔺)	4.319s (+25.5% 🔺)	1.629s	8	1.00x
▲ Vercel	Express	3.497s (+73.0% 🔺)	5.237s (+35.7% 🔺)	1.740s	6	1.30x
▲ Vercel	Next.js (Turbopack)	3.771s (+26.1% 🔺)	5.557s (+23.7% 🔺)	1.786s	6	1.40x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.296s (-8.4% 🟢)	3.009s (+8.2% 🔺)	1.712s	10	1.00x
🐘 Postgres	Express	1.301s (-1.9%)	2.593s (+11.9% 🔺)	1.292s	12	1.00x
🐘 Postgres	Nitro	1.327s (+0.9%)	2.317s (-7.7% 🟢)	0.989s	13	1.02x
💻 Local	Nitro	2.489s (+4.5%)	3.008s (~)	0.519s	10	1.92x
💻 Local	Next.js (Turbopack)	2.668s (+9.9% 🔺)	3.008s (-3.2%)	0.341s	10	2.06x
💻 Local	Express	2.673s (~)	3.100s (+6.2% 🔺)	0.427s	11	2.06x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.978s (+26.4% 🔺)	4.484s (+23.3% 🔺)	1.505s	7	1.00x
▲ Vercel	Express	3.425s (+57.5% 🔺)	5.201s (+35.4% 🔺)	1.776s	6	1.15x
▲ Vercel	Next.js (Turbopack)	4.353s (+24.5% 🔺)	6.479s (+32.7% 🔺)	2.126s	5	1.46x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.568s (-6.0% 🟢)	4.136s (-4.0%)	2.568s	8	1.00x
🐘 Postgres	Express	1.576s (~)	4.011s (-3.0%)	2.435s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	2.881s (+4.9%)	5.683s (+8.8% 🔺)	2.802s	6	1.84x
💻 Local	Next.js (Turbopack)	5.291s (-31.2% 🟢)	6.216s (-29.2% 🟢)	0.925s	5	3.37x
💻 Local	Nitro	6.030s (+11.0% 🔺)	7.018s (+9.4% 🔺)	0.988s	5	3.85x
💻 Local	Express	6.332s (+3.1%)	7.020s (+3.0%)	0.687s	5	4.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.900s (+34.8% 🔺)	5.580s (+15.3% 🔺)	1.680s	6	1.00x
▲ Vercel	Nitro	4.380s (+56.8% 🔺)	6.040s (+28.1% 🔺)	1.661s	6	1.12x
▲ Vercel	Next.js (Turbopack)	6.451s (+62.8% 🔺)	8.213s (+49.9% 🔺)	1.762s	4	1.65x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.523s (+1.8%)	1.023s (+1.7%)	0.500s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.534s (-14.5% 🟢)	1.007s (-6.3% 🟢)	0.472s	60	1.02x
💻 Local	Nitro	0.543s (+21.8% 🔺)	1.005s (~)	0.462s	60	1.04x
🐘 Postgres	Nitro	0.551s (-4.2%)	1.023s (~)	0.472s	59	1.05x
💻 Local	Express	0.559s (-2.1%)	1.005s (~)	0.446s	60	1.07x
💻 Local	Next.js (Turbopack)	0.612s (-6.7% 🟢)	1.022s (~)	0.410s	59	1.17x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.641s (+67.1% 🔺)	6.456s (+36.2% 🔺)	1.815s	10	1.00x
▲ Vercel	Express	4.768s (+85.7% 🔺)	6.430s (+60.0% 🔺)	1.662s	10	1.03x
▲ Vercel	Next.js (Turbopack)	5.565s (+44.9% 🔺)	7.357s (+35.7% 🔺)	1.792s	9	1.20x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.237s (-1.6%)	2.030s (~)	0.793s	45	1.00x
🐘 Postgres	Nitro	1.255s (-9.5% 🟢)	2.029s (+1.1%)	0.774s	45	1.01x
🐘 Postgres	Next.js (Turbopack)	1.272s (-26.0% 🟢)	2.008s (-13.8% 🟢)	0.736s	45	1.03x
💻 Local	Nitro	1.385s (+33.7% 🔺)	2.006s (+38.2% 🔺)	0.620s	45	1.12x
💻 Local	Express	1.414s (+1.2%)	2.006s (~)	0.592s	45	1.14x
💻 Local	Next.js (Turbopack)	1.467s (-3.8%)	2.006s (~)	0.539s	45	1.19x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.197s (+50.2% 🔺)	10.859s (+46.0% 🔺)	1.662s	9	1.00x
▲ Vercel	Express	9.934s (+43.9% 🔺)	11.416s (+30.7% 🔺)	1.482s	8	1.08x
▲ Vercel	Next.js (Turbopack)	11.607s (+36.5% 🔺)	13.869s (+35.5% 🔺)	2.262s	7	1.26x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.409s (-16.8% 🟢)	3.058s (-6.0% 🟢)	0.650s	40	1.00x
🐘 Postgres	Express	2.494s (+4.4%)	3.086s (+1.7%)	0.592s	39	1.04x
🐘 Postgres	Next.js (Turbopack)	2.555s (-17.2% 🟢)	3.008s (-16.5% 🟢)	0.453s	40	1.06x
💻 Local	Nitro	3.075s (+38.7% 🔺)	3.645s (+29.1% 🔺)	0.570s	33	1.28x
💻 Local	Express	3.095s (+1.6%)	3.645s (+1.4%)	0.550s	33	1.29x
💻 Local	Next.js (Turbopack)	3.315s (-0.6%)	4.042s (+0.8%)	0.727s	30	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	18.529s (+40.8% 🔺)	20.148s (+28.8% 🔺)	1.619s	6	1.00x
▲ Vercel	Nitro	20.114s (+50.4% 🔺)	21.738s (+44.4% 🔺)	1.623s	6	1.09x
▲ Vercel	Next.js (Turbopack)	24.421s (+27.0% 🔺)	26.387s (+27.2% 🔺)	1.965s	5	1.32x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.181s (-29.9% 🟢)	1.006s (-0.9%)	0.825s	60	1.00x
🐘 Postgres	Express	0.194s (-4.3%)	1.007s (~)	0.813s	60	1.07x
🐘 Postgres	Nitro	0.204s (-10.8% 🟢)	1.006s (~)	0.802s	60	1.13x
💻 Local	Nitro	0.445s (+18.3% 🔺)	1.004s (~)	0.559s	60	2.46x
💻 Local	Express	0.493s (+5.7% 🔺)	1.005s (~)	0.512s	60	2.72x
💻 Local	Next.js (Turbopack)	0.587s (-4.9%)	1.005s (~)	0.417s	60	3.24x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.562s (+45.2% 🔺)	3.076s (+24.7% 🔺)	1.514s	20	1.00x
▲ Vercel	Express	1.593s (+58.0% 🔺)	3.063s (+14.5% 🔺)	1.470s	20	1.02x
▲ Vercel	Next.js (Turbopack)	2.854s (+40.0% 🔺)	4.819s (+44.2% 🔺)	1.965s	13	1.83x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.284s (-47.0% 🟢)	1.006s (-11.2% 🟢)	0.722s	90	1.00x
🐘 Postgres	Express	0.297s (-3.1%)	1.006s (~)	0.709s	90	1.05x
🐘 Postgres	Nitro	0.329s (-7.5% 🟢)	1.007s (~)	0.678s	90	1.16x
💻 Local	Nitro	2.142s (+44.1% 🔺)	2.715s (+32.2% 🔺)	0.573s	34	7.54x
💻 Local	Express	2.215s (-2.5%)	2.797s (-2.0%)	0.581s	33	7.80x
💻 Local	Next.js (Turbopack)	2.645s (-5.3% 🟢)	3.182s (-4.8%)	0.537s	29	9.31x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.821s (+23.8% 🔺)	3.288s (+2.2%)	1.467s	28	1.00x
▲ Vercel	Nitro	2.117s (+62.5% 🔺)	3.936s (+47.2% 🔺)	1.819s	23	1.16x
▲ Vercel	Next.js (Turbopack)	3.520s (+38.3% 🔺)	5.325s (+41.6% 🔺)	1.805s	17	1.93x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.484s (-6.3% 🟢)	1.078s (+2.7%)	0.594s	112	1.00x
🐘 Postgres	Next.js (Turbopack)	0.507s (-42.2% 🟢)	3.059s (+21.0% 🔺)	2.552s	40	1.05x
🐘 Postgres	Nitro	0.536s (-3.4%)	1.042s (-6.0% 🟢)	0.506s	116	1.11x
💻 Local	Express	9.046s (-3.7%)	10.108s (-4.8%)	1.062s	12	18.67x
💻 Local	Nitro	9.214s (+23.9% 🔺)	10.197s (+23.0% 🔺)	0.983s	12	19.02x
💻 Local	Next.js (Turbopack)	9.879s (-7.5% 🟢)	10.695s (-8.3% 🟢)	0.816s	12	20.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.668s (+34.1% 🔺)	4.112s (+4.9%)	1.444s	30	1.00x
▲ Vercel	Nitro	2.668s (+46.7% 🔺)	4.242s (+17.1% 🔺)	1.574s	29	1.00x
▲ Vercel	Next.js (Turbopack)	4.857s (+29.6% 🔺)	6.914s (+32.5% 🔺)	2.056s	18	1.82x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.131s (-0.5%)	1.970s (~)	0.010s (+3.0%)	2.018s (~)	0.886s	10	1.00x
💻 Local	Express	1.145s (~)	2.004s (~)	0.010s (-5.5% 🟢)	2.018s (~)	0.873s	10	1.01x
🐘 Postgres	Express	1.146s (-0.8%)	2.000s (~)	0.001s (+33.3% 🔺)	2.010s (~)	0.864s	10	1.01x
🐘 Postgres	Nitro	1.151s (-2.1%)	1.998s (~)	0.001s (-8.3% 🟢)	2.010s (~)	0.860s	10	1.02x
💻 Local	Nitro	1.151s (+3.5%)	2.004s (~)	0.010s (-69.2% 🟢)	2.017s (-1.2%)	0.866s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.156s (-11.3% 🟢)	2.000s (~)	0.001s (-93.4% 🟢)	2.011s (-1.4%)	0.855s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.274s (+19.2% 🔺)	3.470s (+13.4% 🔺)	4.051s (+169.2% 🔺)	8.006s (+59.2% 🔺)	5.732s	10	1.00x
▲ Vercel	Express	2.296s (+18.3% 🔺)	3.216s (-4.9%)	3.994s (+164.2% 🔺)	7.662s (+42.3% 🔺)	5.366s	10	1.01x
▲ Vercel	Next.js (Turbopack)	4.036s (+20.6% 🔺)	4.384s (+20.3% 🔺)	3.119s (+124.5% 🔺)	9.016s (+42.1% 🔺)	4.979s	10	1.77x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.530s (-0.7%)	2.006s (~)	0.004s (-16.1% 🟢)	2.024s (~)	0.493s	30	1.00x
💻 Local	Nitro	1.533s (+8.6% 🔺)	2.009s (~)	0.012s (-37.3% 🟢)	2.023s (~)	0.491s	30	1.00x
💻 Local	Express	1.533s (-1.3%)	2.010s (~)	0.014s (-5.8% 🟢)	2.026s (~)	0.493s	30	1.00x
🐘 Postgres	Next.js (Turbopack)	1.573s (-20.2% 🟢)	2.009s (-16.0% 🟢)	0.005s (+32.4% 🔺)	2.026s (-16.2% 🟢)	0.454s	30	1.03x
💻 Local	Next.js (Turbopack)	1.578s (-1.8%)	1.972s (~)	0.014s (+3.5%)	2.027s (~)	0.448s	30	1.03x
🐘 Postgres	Nitro	1.618s (-0.9%)	2.000s (~)	0.005s (+1.3%)	2.030s (~)	0.411s	30	1.06x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.437s (+15.3% 🔺)	7.697s (+14.8% 🔺)	0.410s (+87.5% 🔺)	8.593s (+16.0% 🔺)	2.156s	7	1.00x
▲ Vercel	Express	6.851s (+19.0% 🔺)	8.021s (+9.0% 🔺)	0.538s (+111.5% 🔺)	8.977s (+10.6% 🔺)	2.126s	7	1.06x
▲ Vercel	Next.js (Turbopack)	11.230s (+20.8% 🔺)	12.363s (+22.7% 🔺)	0.212s (-20.7% 🟢)	13.650s (+21.4% 🔺)	2.420s	5	1.74x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.768s (+4.1%)	1.031s (~)	0.000s (+Infinity% 🔺)	1.064s (+1.0%)	0.297s	57	1.00x
🐘 Postgres	Nitro	0.817s (-1.8%)	1.082s (-1.7%)	0.000s (+194.5% 🔺)	1.101s (-1.7%)	0.284s	55	1.06x
🐘 Postgres	Next.js (Turbopack)	0.982s (-10.2% 🟢)	1.386s (-16.5% 🟢)	0.000s (+Infinity% 🔺)	1.394s (-17.1% 🟢)	0.412s	44	1.28x
💻 Local	Nitro	1.249s (+30.7% 🔺)	2.013s (+53.1% 🔺)	0.000s (-56.2% 🟢)	2.016s (+52.9% 🔺)	0.767s	30	1.63x
💻 Local	Express	1.264s (-5.2% 🟢)	2.014s (~)	0.000s (-47.8% 🟢)	2.017s (~)	0.753s	30	1.65x
💻 Local	Next.js (Turbopack)	1.396s (-4.3%)	1.980s (~)	0.000s (+200.0% 🔺)	2.016s (~)	0.620s	30	1.82x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.832s (+37.6% 🔺)	4.875s (+16.8% 🔺)	0.003s (+Infinity% 🔺)	5.348s (+15.3% 🔺)	1.516s	12	1.00x
▲ Vercel	Express	4.028s (+41.5% 🔺)	4.936s (+10.6% 🔺)	0.000s (-100.0% 🟢)	5.410s (+8.5% 🔺)	1.381s	12	1.05x
▲ Vercel	Next.js (Turbopack)	6.034s (+23.5% 🔺)	6.572s (+22.2% 🔺)	0.000s (+275.0% 🔺)	7.715s (+20.7% 🔺)	1.681s	8	1.57x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

fan-out fan-in 10 streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.679s (+2.1%)	2.332s (+3.6%)	0.000s (~)	2.342s (+2.9%)	0.662s	27	1.00x
🐘 Postgres	Nitro	1.947s (+11.8% 🔺)	2.495s (+7.0% 🔺)	0.000s (-100.0% 🟢)	2.518s (+7.4% 🔺)	0.571s	24	1.16x
🐘 Postgres	Next.js (Turbopack)	2.408s (-28.7% 🟢)	3.052s (-21.3% 🟢)	0.000s (NaN%)	3.069s (-21.8% 🟢)	0.661s	20	1.43x
💻 Local	Nitro	3.378s (+54.7% 🔺)	3.899s (+49.6% 🔺)	0.001s (-25.0% 🟢)	3.906s (+49.6% 🔺)	0.528s	16	2.01x
💻 Local	Express	3.384s (+0.7%)	4.021s (+3.1%)	0.001s (-43.1% 🟢)	4.029s (+3.1%)	0.645s	15	2.02x
💻 Local	Next.js (Turbopack)	3.838s (-5.1% 🟢)	4.322s (-3.8%)	0.001s (+0.5%)	4.368s (-3.7%)	0.530s	15	2.29x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.799s (+6.0% 🔺)	6.896s (+12.8% 🔺)	0.000s (NaN%)	7.380s (+3.3%)	1.582s	9	1.00x
▲ Vercel	Express	6.142s (+18.9% 🔺)	7.342s (+12.3% 🔺)	0.000s (+Infinity% 🔺)	7.767s (+9.7% 🔺)	1.625s	8	1.06x
▲ Vercel	Next.js (Turbopack)	8.257s (+19.7% 🔺)	9.065s (+20.3% 🔺)	0.000s (+Infinity% 🔺)	10.142s (+18.0% 🔺)	1.886s	7	1.42x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	17/21
🐘 Postgres	Express	9/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Next.js (Turbopack)	🐘 Postgres	17/21
Nitro	🐘 Postgres	14/21

Column Definitions

• Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
• TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
• Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
• Wall Time: Total testbench time (trigger workflow + poll for result)
• Overhead: Testbench overhead (Wall Time - Workflow Time)
• Samples: Number of benchmark iterations run
• vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

• 💻 Local: In-memory filesystem world (local development)
• 🐘 Postgres: PostgreSQL database world (local development)
• ▲ Vercel: Vercel production/preview deployment
• 🌐 Turso: Community world (local development)
• 🌐 MongoDB: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Jazz: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Redis + BullMQ: Community world (local development)
• 🌐 Cloudflare: Community world (local development)
• 🌐 MySQL: Community world (local development)
• 🌐 Azure: Community world (local development)
• 🌐 NATS JetStream: Community world (local development)
• 🌐 Upstash: Community world (local development)
• 🌐 Platformatic: Community world (local development)

---

📋 View full workflow run

[VaguelySerious]

CI status (interim)

Two failures, both pre-existing on main — not introduced by this PR:

1. E2E Local Dev Tests (vite - stable) — failing tests basic step error preserves message and stack trace and cross-file step error preserves message and function names in stack both fail on the most recent main run (job 73444472541) with the same assertion. Unrelated to AI SDK changes.
2. Docs Preview Smoke Checks — Vercel API returning 403 invalidToken while polling for the preview deployment. Infra/credential issue, not code.

12 E2E Postgres jobs still pending; will check back when they complete.

[VaguelySerious]

CI status (final)

88 pass, 5 skipping, 5 still-running benchmarks, 4 failures — none caused by this PR.

Check	Status	Verdict
E2E Local Dev Tests (vite - stable)	fail	Same 2 tests (basic step error preserves message and stack trace, cross-file step error preserves message and function names in stack) fail on the latest main run (job 73444472541). Pre-existing.
E2E Windows Tests	fail (cancelled at 30m)	dev.test.ts > should rebuild on imported step dependency change timed out on hot-reload polling (Failed to trigger workflow "importedStepOnlyWorkflow": 500). Same 30m20s/30m24s cancellation pattern visible on PRs #1857 and #1854 — known Windows-job timeout flake, unrelated to AI SDK changes.
Docs Preview Smoke Checks	fail	Vercel API 403 invalidToken while polling for the preview deployment URL. Infra/credential issue, the deployment itself succeeded.
E2E Required Check	fail (3s)	Aggregator that reports failure when any of the above E2E jobs fail. No independent signal.

The 5 pending Benchmark * jobs are still in progress (>30 min in) and are independent of type/contract changes in @workflow/ai.

Marking the PR as ready for review when you take a look.

[karthikscale3]

Looks good. The updated implementation preserves the full AI SDK usage shape for DurableAgent totalUsage and adds targeted coverage for the ToolLoopAgent-alignment case.

[VaguelySerious]

Summary

DurableAgentStreamResult (the awaited return of agent.stream()) is missing totalUsage and finishReason. Both fields are already computed in the runtime and passed to the onFinish callback, so the omission from the result is asymmetric and diverges from the AI SDK's GenerateTextResult/StreamTextResult which expose them directly.

This adds them to the interface and to all three return sites (early-abort, paused-tools, and the final return), reusing the existing aggregateUsage(steps) helper.

See also vercel/ai#14786

Test plan

• New regression test in durable-agent-compat.test.ts asserts result.totalUsage and result.finishReason after a normal stream
• Existing 187 tests still pass (188 with the new one)
• Build passes (pnpm build in packages/ai)

🤖 Generated with Claude Code

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-astro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-express-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-fastify-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-hono-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nitro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nuxt-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-vite-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-docs	Ready	Preview, Comment, Open in v0	Jun 26, 2026 11:53pm
workflow-swc-playground	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-tarballs	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-web	Ready	Preview, Comment	Jun 26, 2026 11:53pm

[changeset-bot]

🦋 Changeset detected

Latest commit: 476187c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@workflow/ai	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1442	0	230	1672
✅ 💻 Local Development	1605	0	219	1824
✅ 📦 Local Production	1605	0	219	1824
✅ 🐘 Local Postgres	1593	0	231	1824
✅ 🪟 Windows	152	0	0	152
✅ 📋 Other	885	0	179	1064
Total	7282	0	1078	8360

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	125	0	27
✅ example	125	0	27
✅ express	125	0	27
✅ fastify	125	0	27
✅ hono	125	0	27
✅ nextjs-turbopack	149	0	3
✅ nextjs-webpack	149	0	3
✅ nitro	125	0	27
✅ nuxt	125	0	27
✅ sveltekit	144	0	8
✅ vite	125	0	27

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	126	0	26
✅ express-stable	126	0	26
✅ fastify-stable	126	0	26
✅ hono-stable	126	0	26
✅ nextjs-turbopack-canary	132	0	20
✅ nextjs-turbopack-stable	151	0	1
✅ nextjs-webpack-canary	132	0	20
✅ nextjs-webpack-stable	151	0	1
✅ nitro-stable	126	0	26
✅ nuxt-stable	126	0	26
✅ sveltekit-stable	145	0	7
✅ vite-stable	126	0	26

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	152	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	127	0	25
✅ e2e-local-dev-tanstack-start-	127	0	25
✅ e2e-local-postgres-nest-stable	126	0	26
✅ e2e-local-postgres-tanstack-start-	126	0	26
✅ e2e-local-prod-nest-stable	127	0	25
✅ e2e-local-prod-tanstack-start-	127	0	25
✅ e2e-vercel-prod-tanstack-start	125	0	27

---

📋 View full workflow run

[github-actions]

📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.043s (+23.1% 🔺)	1.005s (~)	0.962s	10	1.00x
💻 Local	Express	0.045s (-8.1% 🟢)	1.006s (~)	0.961s	10	1.05x
💻 Local	Next.js (Turbopack)	0.048s (-4.0%)	1.007s (~)	0.959s	10	1.12x
🐘 Postgres	Next.js (Turbopack)	0.058s (-50.6% 🟢)	1.012s (-3.9%)	0.954s	10	1.35x
🐘 Postgres	Express	0.059s (-6.5% 🟢)	1.011s (~)	0.952s	10	1.36x
🐘 Postgres	Nitro	0.066s (-6.9% 🟢)	1.013s (~)	0.947s	10	1.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.209s (-0.5%)	1.724s (+15.3% 🔺)	1.515s	10	1.00x
▲ Vercel	Next.js (Turbopack)	0.255s (-53.5% 🟢)	2.054s (+1.1%)	1.800s	10	1.22x
▲ Vercel	Nitro	0.257s (+30.0% 🔺)	1.832s (+7.3% 🔺)	1.575s	10	1.23x

🔍 Observability: Express | Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.076s (+0.9%)	2.008s (~)	0.932s	10	1.00x
💻 Local	Express	1.083s (~)	2.007s (~)	0.924s	10	1.01x
💻 Local	Next.js (Turbopack)	1.084s (~)	2.006s (~)	0.922s	10	1.01x
🐘 Postgres	Express	1.092s (~)	2.010s (~)	0.918s	10	1.01x
🐘 Postgres	Nitro	1.094s (-0.6%)	2.009s (~)	0.916s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.101s (+1.6%)	2.010s (~)	0.909s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.435s (+2.0%)	2.900s (+2.4%)	1.466s	10	1.00x
▲ Vercel	Nitro	1.523s (+10.2% 🔺)	3.036s (-2.3%)	1.513s	10	1.06x
▲ Vercel	Next.js (Turbopack)	2.444s (+13.8% 🔺)	4.123s (+16.1% 🔺)	1.679s	10	1.70x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.420s (~)	11.022s (~)	0.601s	3	1.00x
🐘 Postgres	Nitro	10.435s (-0.9%)	11.015s (~)	0.581s	3	1.00x
💻 Local	Next.js (Turbopack)	10.442s (~)	11.024s (~)	0.582s	3	1.00x
💻 Local	Express	10.451s (~)	11.023s (~)	0.572s	3	1.00x
🐘 Postgres	Express	10.457s (~)	11.021s (~)	0.564s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.540s (-1.6%)	11.020s (~)	0.480s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	12.664s (+7.0% 🔺)	14.760s (+11.3% 🔺)	2.096s	3	1.00x
▲ Vercel	Express	12.909s (+9.8% 🔺)	14.630s (+5.3% 🔺)	1.722s	3	1.02x
▲ Vercel	Next.js (Turbopack)	13.171s (+4.1%)	15.097s (+8.9% 🔺)	1.926s	2	1.04x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	13.547s (~)	14.027s (~)	0.480s	5	1.00x
🐘 Postgres	Nitro	13.569s (-1.1%)	14.021s (~)	0.452s	5	1.00x
🐘 Postgres	Express	13.571s (-0.8%)	14.019s (~)	0.449s	5	1.00x
🐘 Postgres	Next.js (Turbopack)	13.585s (~)	14.022s (~)	0.437s	5	1.00x
💻 Local	Express	13.596s (~)	14.028s (~)	0.432s	5	1.00x
💻 Local	Next.js (Turbopack)	13.655s (~)	14.027s (~)	0.372s	5	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	18.355s (-1.3%)	20.041s (-2.6%)	1.686s	4	1.00x
▲ Vercel	Express	18.872s (+10.6% 🔺)	20.504s (+8.3% 🔺)	1.631s	3	1.03x
▲ Vercel	Next.js (Turbopack)	19.242s (+5.4% 🔺)	21.587s (+6.9% 🔺)	2.345s	3	1.05x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.032s (+2.0%)	12.648s (+5.1% 🔺)	0.617s	8	1.00x
🐘 Postgres	Nitro	12.098s (-1.6%)	13.019s (~)	0.921s	7	1.01x
💻 Local	Express	12.158s (-1.6%)	13.024s (~)	0.866s	7	1.01x
🐘 Postgres	Next.js (Turbopack)	12.218s (-1.3%)	13.016s (~)	0.797s	7	1.02x
🐘 Postgres	Express	12.330s (+1.8%)	13.021s (+1.2%)	0.691s	7	1.02x
💻 Local	Next.js (Turbopack)	12.385s (~)	13.027s (~)	0.642s	7	1.03x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	22.509s (+26.2% 🔺)	24.128s (+23.8% 🔺)	1.619s	4	1.00x
▲ Vercel	Express	23.401s (+29.5% 🔺)	25.075s (+24.1% 🔺)	1.674s	4	1.04x
▲ Vercel	Next.js (Turbopack)	24.310s (+23.9% 🔺)	26.317s (+25.3% 🔺)	2.007s	4	1.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.163s (-1.3%)	2.008s (~)	0.845s	15	1.00x
🐘 Postgres	Nitro	1.168s (-2.8%)	2.007s (~)	0.839s	15	1.00x
🐘 Postgres	Next.js (Turbopack)	1.223s (-9.9% 🟢)	2.008s (-1.2%)	0.784s	15	1.05x
💻 Local	Nitro	1.384s (+6.8% 🔺)	2.006s (~)	0.622s	15	1.19x
💻 Local	Next.js (Turbopack)	1.393s (-0.6%)	2.006s (~)	0.613s	15	1.20x
💻 Local	Express	1.417s (~)	2.007s (~)	0.590s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.812s (+47.0% 🔺)	4.763s (+25.3% 🔺)	1.951s	7	1.00x
▲ Vercel	Nitro	3.188s (+45.2% 🔺)	4.695s (+29.3% 🔺)	1.506s	7	1.13x
▲ Vercel	Next.js (Turbopack)	3.872s (+15.0% 🔺)	5.654s (+17.6% 🔺)	1.783s	6	1.38x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.310s (-3.9%)	2.393s (-4.6%)	1.083s	13	1.00x
🐘 Postgres	Express	1.310s (+1.2%)	2.316s (-10.6% 🟢)	1.006s	13	1.00x
🐘 Postgres	Next.js (Turbopack)	1.329s (-5.4% 🟢)	3.011s (~)	1.682s	10	1.01x
💻 Local	Express	2.442s (-11.7% 🟢)	3.009s (~)	0.567s	10	1.86x
💻 Local	Nitro	2.509s (+4.1%)	3.009s (~)	0.500s	10	1.92x
💻 Local	Next.js (Turbopack)	2.519s (-3.4%)	3.109s (+3.3%)	0.590s	10	1.92x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.900s (+4.4%)	4.510s (+0.6%)	1.609s	7	1.00x
▲ Vercel	Nitro	3.058s (+22.0% 🔺)	4.827s (+31.1% 🔺)	1.769s	7	1.05x
▲ Vercel	Next.js (Turbopack)	5.219s (+48.9% 🔺)	7.116s (+52.2% 🔺)	1.897s	5	1.80x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.562s (-6.1% 🟢)	4.138s (-3.8%)	2.576s	8	1.00x
🐘 Postgres	Express	1.564s (-1.2%)	4.012s (-3.0%)	2.448s	8	1.00x
🐘 Postgres	Next.js (Turbopack)	2.921s (+2.3%)	5.848s (+9.3% 🔺)	2.927s	6	1.87x
💻 Local	Nitro	5.751s (+5.3% 🔺)	6.213s (+3.2%)	0.461s	5	3.68x
💻 Local	Express	6.057s (-3.8%)	6.815s (~)	0.759s	5	3.88x
💻 Local	Next.js (Turbopack)	6.652s (-10.2% 🟢)	7.767s (-8.8% 🟢)	1.115s	4	4.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.971s (+28.7% 🔺)	5.501s (+15.5% 🔺)	1.530s	6	1.00x
▲ Vercel	Nitro	4.357s (+54.4% 🔺)	6.158s (+30.1% 🔺)	1.800s	6	1.10x
▲ Vercel	Next.js (Turbopack)	5.269s (+4.0%)	7.268s (+11.7% 🔺)	1.999s	5	1.33x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.163s (-2.7%)	2.007s (~)	0.844s	15	1.00x
🐘 Postgres	Express	1.171s (-20.0% 🟢)	2.008s (-9.6% 🟢)	0.837s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.188s (-8.4% 🟢)	2.008s (-1.0%)	0.820s	15	1.02x
💻 Local	Nitro	1.383s (+16.8% 🔺)	2.007s (~)	0.623s	15	1.19x
💻 Local	Express	1.429s (-1.0%)	2.007s (~)	0.577s	15	1.23x
💻 Local	Next.js (Turbopack)	1.461s (-9.9% 🟢)	2.008s (-3.2%)	0.547s	15	1.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.691s (+32.5% 🔺)	4.319s (+25.5% 🔺)	1.629s	8	1.00x
▲ Vercel	Express	3.497s (+73.0% 🔺)	5.237s (+35.7% 🔺)	1.740s	6	1.30x
▲ Vercel	Next.js (Turbopack)	3.771s (+26.1% 🔺)	5.557s (+23.7% 🔺)	1.786s	6	1.40x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.296s (-8.4% 🟢)	3.009s (+8.2% 🔺)	1.712s	10	1.00x
🐘 Postgres	Express	1.301s (-1.9%)	2.593s (+11.9% 🔺)	1.292s	12	1.00x
🐘 Postgres	Nitro	1.327s (+0.9%)	2.317s (-7.7% 🟢)	0.989s	13	1.02x
💻 Local	Nitro	2.489s (+4.5%)	3.008s (~)	0.519s	10	1.92x
💻 Local	Next.js (Turbopack)	2.668s (+9.9% 🔺)	3.008s (-3.2%)	0.341s	10	2.06x
💻 Local	Express	2.673s (~)	3.100s (+6.2% 🔺)	0.427s	11	2.06x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.978s (+26.4% 🔺)	4.484s (+23.3% 🔺)	1.505s	7	1.00x
▲ Vercel	Express	3.425s (+57.5% 🔺)	5.201s (+35.4% 🔺)	1.776s	6	1.15x
▲ Vercel	Next.js (Turbopack)	4.353s (+24.5% 🔺)	6.479s (+32.7% 🔺)	2.126s	5	1.46x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.568s (-6.0% 🟢)	4.136s (-4.0%)	2.568s	8	1.00x
🐘 Postgres	Express	1.576s (~)	4.011s (-3.0%)	2.435s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	2.881s (+4.9%)	5.683s (+8.8% 🔺)	2.802s	6	1.84x
💻 Local	Next.js (Turbopack)	5.291s (-31.2% 🟢)	6.216s (-29.2% 🟢)	0.925s	5	3.37x
💻 Local	Nitro	6.030s (+11.0% 🔺)	7.018s (+9.4% 🔺)	0.988s	5	3.85x
💻 Local	Express	6.332s (+3.1%)	7.020s (+3.0%)	0.687s	5	4.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.900s (+34.8% 🔺)	5.580s (+15.3% 🔺)	1.680s	6	1.00x
▲ Vercel	Nitro	4.380s (+56.8% 🔺)	6.040s (+28.1% 🔺)	1.661s	6	1.12x
▲ Vercel	Next.js (Turbopack)	6.451s (+62.8% 🔺)	8.213s (+49.9% 🔺)	1.762s	4	1.65x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.523s (+1.8%)	1.023s (+1.7%)	0.500s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.534s (-14.5% 🟢)	1.007s (-6.3% 🟢)	0.472s	60	1.02x
💻 Local	Nitro	0.543s (+21.8% 🔺)	1.005s (~)	0.462s	60	1.04x
🐘 Postgres	Nitro	0.551s (-4.2%)	1.023s (~)	0.472s	59	1.05x
💻 Local	Express	0.559s (-2.1%)	1.005s (~)	0.446s	60	1.07x
💻 Local	Next.js (Turbopack)	0.612s (-6.7% 🟢)	1.022s (~)	0.410s	59	1.17x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.641s (+67.1% 🔺)	6.456s (+36.2% 🔺)	1.815s	10	1.00x
▲ Vercel	Express	4.768s (+85.7% 🔺)	6.430s (+60.0% 🔺)	1.662s	10	1.03x
▲ Vercel	Next.js (Turbopack)	5.565s (+44.9% 🔺)	7.357s (+35.7% 🔺)	1.792s	9	1.20x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.237s (-1.6%)	2.030s (~)	0.793s	45	1.00x
🐘 Postgres	Nitro	1.255s (-9.5% 🟢)	2.029s (+1.1%)	0.774s	45	1.01x
🐘 Postgres	Next.js (Turbopack)	1.272s (-26.0% 🟢)	2.008s (-13.8% 🟢)	0.736s	45	1.03x
💻 Local	Nitro	1.385s (+33.7% 🔺)	2.006s (+38.2% 🔺)	0.620s	45	1.12x
💻 Local	Express	1.414s (+1.2%)	2.006s (~)	0.592s	45	1.14x
💻 Local	Next.js (Turbopack)	1.467s (-3.8%)	2.006s (~)	0.539s	45	1.19x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.197s (+50.2% 🔺)	10.859s (+46.0% 🔺)	1.662s	9	1.00x
▲ Vercel	Express	9.934s (+43.9% 🔺)	11.416s (+30.7% 🔺)	1.482s	8	1.08x
▲ Vercel	Next.js (Turbopack)	11.607s (+36.5% 🔺)	13.869s (+35.5% 🔺)	2.262s	7	1.26x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.409s (-16.8% 🟢)	3.058s (-6.0% 🟢)	0.650s	40	1.00x
🐘 Postgres	Express	2.494s (+4.4%)	3.086s (+1.7%)	0.592s	39	1.04x
🐘 Postgres	Next.js (Turbopack)	2.555s (-17.2% 🟢)	3.008s (-16.5% 🟢)	0.453s	40	1.06x
💻 Local	Nitro	3.075s (+38.7% 🔺)	3.645s (+29.1% 🔺)	0.570s	33	1.28x
💻 Local	Express	3.095s (+1.6%)	3.645s (+1.4%)	0.550s	33	1.29x
💻 Local	Next.js (Turbopack)	3.315s (-0.6%)	4.042s (+0.8%)	0.727s	30	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	18.529s (+40.8% 🔺)	20.148s (+28.8% 🔺)	1.619s	6	1.00x
▲ Vercel	Nitro	20.114s (+50.4% 🔺)	21.738s (+44.4% 🔺)	1.623s	6	1.09x
▲ Vercel	Next.js (Turbopack)	24.421s (+27.0% 🔺)	26.387s (+27.2% 🔺)	1.965s	5	1.32x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.181s (-29.9% 🟢)	1.006s (-0.9%)	0.825s	60	1.00x
🐘 Postgres	Express	0.194s (-4.3%)	1.007s (~)	0.813s	60	1.07x
🐘 Postgres	Nitro	0.204s (-10.8% 🟢)	1.006s (~)	0.802s	60	1.13x
💻 Local	Nitro	0.445s (+18.3% 🔺)	1.004s (~)	0.559s	60	2.46x
💻 Local	Express	0.493s (+5.7% 🔺)	1.005s (~)	0.512s	60	2.72x
💻 Local	Next.js (Turbopack)	0.587s (-4.9%)	1.005s (~)	0.417s	60	3.24x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.562s (+45.2% 🔺)	3.076s (+24.7% 🔺)	1.514s	20	1.00x
▲ Vercel	Express	1.593s (+58.0% 🔺)	3.063s (+14.5% 🔺)	1.470s	20	1.02x
▲ Vercel	Next.js (Turbopack)	2.854s (+40.0% 🔺)	4.819s (+44.2% 🔺)	1.965s	13	1.83x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.284s (-47.0% 🟢)	1.006s (-11.2% 🟢)	0.722s	90	1.00x
🐘 Postgres	Express	0.297s (-3.1%)	1.006s (~)	0.709s	90	1.05x
🐘 Postgres	Nitro	0.329s (-7.5% 🟢)	1.007s (~)	0.678s	90	1.16x
💻 Local	Nitro	2.142s (+44.1% 🔺)	2.715s (+32.2% 🔺)	0.573s	34	7.54x
💻 Local	Express	2.215s (-2.5%)	2.797s (-2.0%)	0.581s	33	7.80x
💻 Local	Next.js (Turbopack)	2.645s (-5.3% 🟢)	3.182s (-4.8%)	0.537s	29	9.31x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.821s (+23.8% 🔺)	3.288s (+2.2%)	1.467s	28	1.00x
▲ Vercel	Nitro	2.117s (+62.5% 🔺)	3.936s (+47.2% 🔺)	1.819s	23	1.16x
▲ Vercel	Next.js (Turbopack)	3.520s (+38.3% 🔺)	5.325s (+41.6% 🔺)	1.805s	17	1.93x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.484s (-6.3% 🟢)	1.078s (+2.7%)	0.594s	112	1.00x
🐘 Postgres	Next.js (Turbopack)	0.507s (-42.2% 🟢)	3.059s (+21.0% 🔺)	2.552s	40	1.05x
🐘 Postgres	Nitro	0.536s (-3.4%)	1.042s (-6.0% 🟢)	0.506s	116	1.11x
💻 Local	Express	9.046s (-3.7%)	10.108s (-4.8%)	1.062s	12	18.67x
💻 Local	Nitro	9.214s (+23.9% 🔺)	10.197s (+23.0% 🔺)	0.983s	12	19.02x
💻 Local	Next.js (Turbopack)	9.879s (-7.5% 🟢)	10.695s (-8.3% 🟢)	0.816s	12	20.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.668s (+34.1% 🔺)	4.112s (+4.9%)	1.444s	30	1.00x
▲ Vercel	Nitro	2.668s (+46.7% 🔺)	4.242s (+17.1% 🔺)	1.574s	29	1.00x
▲ Vercel	Next.js (Turbopack)	4.857s (+29.6% 🔺)	6.914s (+32.5% 🔺)	2.056s	18	1.82x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.131s (-0.5%)	1.970s (~)	0.010s (+3.0%)	2.018s (~)	0.886s	10	1.00x
💻 Local	Express	1.145s (~)	2.004s (~)	0.010s (-5.5% 🟢)	2.018s (~)	0.873s	10	1.01x
🐘 Postgres	Express	1.146s (-0.8%)	2.000s (~)	0.001s (+33.3% 🔺)	2.010s (~)	0.864s	10	1.01x
🐘 Postgres	Nitro	1.151s (-2.1%)	1.998s (~)	0.001s (-8.3% 🟢)	2.010s (~)	0.860s	10	1.02x
💻 Local	Nitro	1.151s (+3.5%)	2.004s (~)	0.010s (-69.2% 🟢)	2.017s (-1.2%)	0.866s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.156s (-11.3% 🟢)	2.000s (~)	0.001s (-93.4% 🟢)	2.011s (-1.4%)	0.855s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.274s (+19.2% 🔺)	3.470s (+13.4% 🔺)	4.051s (+169.2% 🔺)	8.006s (+59.2% 🔺)	5.732s	10	1.00x
▲ Vercel	Express	2.296s (+18.3% 🔺)	3.216s (-4.9%)	3.994s (+164.2% 🔺)	7.662s (+42.3% 🔺)	5.366s	10	1.01x
▲ Vercel	Next.js (Turbopack)	4.036s (+20.6% 🔺)	4.384s (+20.3% 🔺)	3.119s (+124.5% 🔺)	9.016s (+42.1% 🔺)	4.979s	10	1.77x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.530s (-0.7%)	2.006s (~)	0.004s (-16.1% 🟢)	2.024s (~)	0.493s	30	1.00x
💻 Local	Nitro	1.533s (+8.6% 🔺)	2.009s (~)	0.012s (-37.3% 🟢)	2.023s (~)	0.491s	30	1.00x
💻 Local	Express	1.533s (-1.3%)	2.010s (~)	0.014s (-5.8% 🟢)	2.026s (~)	0.493s	30	1.00x
🐘 Postgres	Next.js (Turbopack)	1.573s (-20.2% 🟢)	2.009s (-16.0% 🟢)	0.005s (+32.4% 🔺)	2.026s (-16.2% 🟢)	0.454s	30	1.03x
💻 Local	Next.js (Turbopack)	1.578s (-1.8%)	1.972s (~)	0.014s (+3.5%)	2.027s (~)	0.448s	30	1.03x
🐘 Postgres	Nitro	1.618s (-0.9%)	2.000s (~)	0.005s (+1.3%)	2.030s (~)	0.411s	30	1.06x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.437s (+15.3% 🔺)	7.697s (+14.8% 🔺)	0.410s (+87.5% 🔺)	8.593s (+16.0% 🔺)	2.156s	7	1.00x
▲ Vercel	Express	6.851s (+19.0% 🔺)	8.021s (+9.0% 🔺)	0.538s (+111.5% 🔺)	8.977s (+10.6% 🔺)	2.126s	7	1.06x
▲ Vercel	Next.js (Turbopack)	11.230s (+20.8% 🔺)	12.363s (+22.7% 🔺)	0.212s (-20.7% 🟢)	13.650s (+21.4% 🔺)	2.420s	5	1.74x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.768s (+4.1%)	1.031s (~)	0.000s (+Infinity% 🔺)	1.064s (+1.0%)	0.297s	57	1.00x
🐘 Postgres	Nitro	0.817s (-1.8%)	1.082s (-1.7%)	0.000s (+194.5% 🔺)	1.101s (-1.7%)	0.284s	55	1.06x
🐘 Postgres	Next.js (Turbopack)	0.982s (-10.2% 🟢)	1.386s (-16.5% 🟢)	0.000s (+Infinity% 🔺)	1.394s (-17.1% 🟢)	0.412s	44	1.28x
💻 Local	Nitro	1.249s (+30.7% 🔺)	2.013s (+53.1% 🔺)	0.000s (-56.2% 🟢)	2.016s (+52.9% 🔺)	0.767s	30	1.63x
💻 Local	Express	1.264s (-5.2% 🟢)	2.014s (~)	0.000s (-47.8% 🟢)	2.017s (~)	0.753s	30	1.65x
💻 Local	Next.js (Turbopack)	1.396s (-4.3%)	1.980s (~)	0.000s (+200.0% 🔺)	2.016s (~)	0.620s	30	1.82x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.832s (+37.6% 🔺)	4.875s (+16.8% 🔺)	0.003s (+Infinity% 🔺)	5.348s (+15.3% 🔺)	1.516s	12	1.00x
▲ Vercel	Express	4.028s (+41.5% 🔺)	4.936s (+10.6% 🔺)	0.000s (-100.0% 🟢)	5.410s (+8.5% 🔺)	1.381s	12	1.05x
▲ Vercel	Next.js (Turbopack)	6.034s (+23.5% 🔺)	6.572s (+22.2% 🔺)	0.000s (+275.0% 🔺)	7.715s (+20.7% 🔺)	1.681s	8	1.57x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

fan-out fan-in 10 streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.679s (+2.1%)	2.332s (+3.6%)	0.000s (~)	2.342s (+2.9%)	0.662s	27	1.00x
🐘 Postgres	Nitro	1.947s (+11.8% 🔺)	2.495s (+7.0% 🔺)	0.000s (-100.0% 🟢)	2.518s (+7.4% 🔺)	0.571s	24	1.16x
🐘 Postgres	Next.js (Turbopack)	2.408s (-28.7% 🟢)	3.052s (-21.3% 🟢)	0.000s (NaN%)	3.069s (-21.8% 🟢)	0.661s	20	1.43x
💻 Local	Nitro	3.378s (+54.7% 🔺)	3.899s (+49.6% 🔺)	0.001s (-25.0% 🟢)	3.906s (+49.6% 🔺)	0.528s	16	2.01x
💻 Local	Express	3.384s (+0.7%)	4.021s (+3.1%)	0.001s (-43.1% 🟢)	4.029s (+3.1%)	0.645s	15	2.02x
💻 Local	Next.js (Turbopack)	3.838s (-5.1% 🟢)	4.322s (-3.8%)	0.001s (+0.5%)	4.368s (-3.7%)	0.530s	15	2.29x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.799s (+6.0% 🔺)	6.896s (+12.8% 🔺)	0.000s (NaN%)	7.380s (+3.3%)	1.582s	9	1.00x
▲ Vercel	Express	6.142s (+18.9% 🔺)	7.342s (+12.3% 🔺)	0.000s (+Infinity% 🔺)	7.767s (+9.7% 🔺)	1.625s	8	1.06x
▲ Vercel	Next.js (Turbopack)	8.257s (+19.7% 🔺)	9.065s (+20.3% 🔺)	0.000s (+Infinity% 🔺)	10.142s (+18.0% 🔺)	1.886s	7	1.42x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	17/21
🐘 Postgres	Express	9/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Next.js (Turbopack)	🐘 Postgres	17/21
Nitro	🐘 Postgres	14/21

Column Definitions

• Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
• TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
• Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
• Wall Time: Total testbench time (trigger workflow + poll for result)
• Overhead: Testbench overhead (Wall Time - Workflow Time)
• Samples: Number of benchmark iterations run
• vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

• 💻 Local: In-memory filesystem world (local development)
• 🐘 Postgres: PostgreSQL database world (local development)
• ▲ Vercel: Vercel production/preview deployment
• 🌐 Turso: Community world (local development)
• 🌐 MongoDB: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Jazz: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Redis + BullMQ: Community world (local development)
• 🌐 Cloudflare: Community world (local development)
• 🌐 MySQL: Community world (local development)
• 🌐 Azure: Community world (local development)
• 🌐 NATS JetStream: Community world (local development)
• 🌐 Upstash: Community world (local development)
• 🌐 Platformatic: Community world (local development)

---

📋 View full workflow run

[VaguelySerious]

CI status (interim)

Two failures, both pre-existing on main — not introduced by this PR:

1. E2E Local Dev Tests (vite - stable) — failing tests basic step error preserves message and stack trace and cross-file step error preserves message and function names in stack both fail on the most recent main run (job 73444472541) with the same assertion. Unrelated to AI SDK changes.
2. Docs Preview Smoke Checks — Vercel API returning 403 invalidToken while polling for the preview deployment. Infra/credential issue, not code.

12 E2E Postgres jobs still pending; will check back when they complete.

[VaguelySerious]

CI status (final)

88 pass, 5 skipping, 5 still-running benchmarks, 4 failures — none caused by this PR.

Check	Status	Verdict
E2E Local Dev Tests (vite - stable)	fail	Same 2 tests (basic step error preserves message and stack trace, cross-file step error preserves message and function names in stack) fail on the latest main run (job 73444472541). Pre-existing.
E2E Windows Tests	fail (cancelled at 30m)	dev.test.ts > should rebuild on imported step dependency change timed out on hot-reload polling (Failed to trigger workflow "importedStepOnlyWorkflow": 500). Same 30m20s/30m24s cancellation pattern visible on PRs #1857 and #1854 — known Windows-job timeout flake, unrelated to AI SDK changes.
Docs Preview Smoke Checks	fail	Vercel API 403 invalidToken while polling for the preview deployment URL. Infra/credential issue, the deployment itself succeeded.
E2E Required Check	fail (3s)	Aggregator that reports failure when any of the above E2E jobs fail. No independent signal.

The 5 pending Benchmark * jobs are still in progress (>30 min in) and are independent of type/contract changes in @workflow/ai.

Marking the PR as ready for review when you take a look.

[karthikscale3]

Looks good. The updated implementation preserves the full AI SDK usage shape for DurableAgent totalUsage and adds targeted coverage for the ToolLoopAgent-alignment case.

[VaguelySerious]

Summary

DurableAgentStreamResult (the awaited return of agent.stream()) is missing totalUsage and finishReason. Both fields are already computed in the runtime and passed to the onFinish callback, so the omission from the result is asymmetric and diverges from the AI SDK's GenerateTextResult/StreamTextResult which expose them directly.

This adds them to the interface and to all three return sites (early-abort, paused-tools, and the final return), reusing the existing aggregateUsage(steps) helper.

See also vercel/ai#14786

Test plan

• New regression test in durable-agent-compat.test.ts asserts result.totalUsage and result.finishReason after a normal stream
• Existing 187 tests still pass (188 with the new one)
• Build passes (pnpm build in packages/ai)

🤖 Generated with Claude Code

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-astro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-express-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-fastify-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-hono-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nitro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nuxt-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-vite-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-docs	Ready	Preview, Comment, Open in v0	Jun 26, 2026 11:53pm
workflow-swc-playground	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-tarballs	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-web	Ready	Preview, Comment	Jun 26, 2026 11:53pm

[changeset-bot]

🦋 Changeset detected

Latest commit: 476187c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@workflow/ai	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1442	0	230	1672
✅ 💻 Local Development	1605	0	219	1824
✅ 📦 Local Production	1605	0	219	1824
✅ 🐘 Local Postgres	1593	0	231	1824
✅ 🪟 Windows	152	0	0	152
✅ 📋 Other	885	0	179	1064
Total	7282	0	1078	8360

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	125	0	27
✅ example	125	0	27
✅ express	125	0	27
✅ fastify	125	0	27
✅ hono	125	0	27
✅ nextjs-turbopack	149	0	3
✅ nextjs-webpack	149	0	3
✅ nitro	125	0	27
✅ nuxt	125	0	27
✅ sveltekit	144	0	8
✅ vite	125	0	27

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	126	0	26
✅ express-stable	126	0	26
✅ fastify-stable	126	0	26
✅ hono-stable	126	0	26
✅ nextjs-turbopack-canary	132	0	20
✅ nextjs-turbopack-stable	151	0	1
✅ nextjs-webpack-canary	132	0	20
✅ nextjs-webpack-stable	151	0	1
✅ nitro-stable	126	0	26
✅ nuxt-stable	126	0	26
✅ sveltekit-stable	145	0	7
✅ vite-stable	126	0	26

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	152	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	127	0	25
✅ e2e-local-dev-tanstack-start-	127	0	25
✅ e2e-local-postgres-nest-stable	126	0	26
✅ e2e-local-postgres-tanstack-start-	126	0	26
✅ e2e-local-prod-nest-stable	127	0	25
✅ e2e-local-prod-tanstack-start-	127	0	25
✅ e2e-vercel-prod-tanstack-start	125	0	27

---

📋 View full workflow run

[github-actions]

📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.043s (+23.1% 🔺)	1.005s (~)	0.962s	10	1.00x
💻 Local	Express	0.045s (-8.1% 🟢)	1.006s (~)	0.961s	10	1.05x
💻 Local	Next.js (Turbopack)	0.048s (-4.0%)	1.007s (~)	0.959s	10	1.12x
🐘 Postgres	Next.js (Turbopack)	0.058s (-50.6% 🟢)	1.012s (-3.9%)	0.954s	10	1.35x
🐘 Postgres	Express	0.059s (-6.5% 🟢)	1.011s (~)	0.952s	10	1.36x
🐘 Postgres	Nitro	0.066s (-6.9% 🟢)	1.013s (~)	0.947s	10	1.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.209s (-0.5%)	1.724s (+15.3% 🔺)	1.515s	10	1.00x
▲ Vercel	Next.js (Turbopack)	0.255s (-53.5% 🟢)	2.054s (+1.1%)	1.800s	10	1.22x
▲ Vercel	Nitro	0.257s (+30.0% 🔺)	1.832s (+7.3% 🔺)	1.575s	10	1.23x

🔍 Observability: Express | Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.076s (+0.9%)	2.008s (~)	0.932s	10	1.00x
💻 Local	Express	1.083s (~)	2.007s (~)	0.924s	10	1.01x
💻 Local	Next.js (Turbopack)	1.084s (~)	2.006s (~)	0.922s	10	1.01x
🐘 Postgres	Express	1.092s (~)	2.010s (~)	0.918s	10	1.01x
🐘 Postgres	Nitro	1.094s (-0.6%)	2.009s (~)	0.916s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.101s (+1.6%)	2.010s (~)	0.909s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.435s (+2.0%)	2.900s (+2.4%)	1.466s	10	1.00x
▲ Vercel	Nitro	1.523s (+10.2% 🔺)	3.036s (-2.3%)	1.513s	10	1.06x
▲ Vercel	Next.js (Turbopack)	2.444s (+13.8% 🔺)	4.123s (+16.1% 🔺)	1.679s	10	1.70x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.420s (~)	11.022s (~)	0.601s	3	1.00x
🐘 Postgres	Nitro	10.435s (-0.9%)	11.015s (~)	0.581s	3	1.00x
💻 Local	Next.js (Turbopack)	10.442s (~)	11.024s (~)	0.582s	3	1.00x
💻 Local	Express	10.451s (~)	11.023s (~)	0.572s	3	1.00x
🐘 Postgres	Express	10.457s (~)	11.021s (~)	0.564s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.540s (-1.6%)	11.020s (~)	0.480s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	12.664s (+7.0% 🔺)	14.760s (+11.3% 🔺)	2.096s	3	1.00x
▲ Vercel	Express	12.909s (+9.8% 🔺)	14.630s (+5.3% 🔺)	1.722s	3	1.02x
▲ Vercel	Next.js (Turbopack)	13.171s (+4.1%)	15.097s (+8.9% 🔺)	1.926s	2	1.04x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	13.547s (~)	14.027s (~)	0.480s	5	1.00x
🐘 Postgres	Nitro	13.569s (-1.1%)	14.021s (~)	0.452s	5	1.00x
🐘 Postgres	Express	13.571s (-0.8%)	14.019s (~)	0.449s	5	1.00x
🐘 Postgres	Next.js (Turbopack)	13.585s (~)	14.022s (~)	0.437s	5	1.00x
💻 Local	Express	13.596s (~)	14.028s (~)	0.432s	5	1.00x
💻 Local	Next.js (Turbopack)	13.655s (~)	14.027s (~)	0.372s	5	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	18.355s (-1.3%)	20.041s (-2.6%)	1.686s	4	1.00x
▲ Vercel	Express	18.872s (+10.6% 🔺)	20.504s (+8.3% 🔺)	1.631s	3	1.03x
▲ Vercel	Next.js (Turbopack)	19.242s (+5.4% 🔺)	21.587s (+6.9% 🔺)	2.345s	3	1.05x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.032s (+2.0%)	12.648s (+5.1% 🔺)	0.617s	8	1.00x
🐘 Postgres	Nitro	12.098s (-1.6%)	13.019s (~)	0.921s	7	1.01x
💻 Local	Express	12.158s (-1.6%)	13.024s (~)	0.866s	7	1.01x
🐘 Postgres	Next.js (Turbopack)	12.218s (-1.3%)	13.016s (~)	0.797s	7	1.02x
🐘 Postgres	Express	12.330s (+1.8%)	13.021s (+1.2%)	0.691s	7	1.02x
💻 Local	Next.js (Turbopack)	12.385s (~)	13.027s (~)	0.642s	7	1.03x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	22.509s (+26.2% 🔺)	24.128s (+23.8% 🔺)	1.619s	4	1.00x
▲ Vercel	Express	23.401s (+29.5% 🔺)	25.075s (+24.1% 🔺)	1.674s	4	1.04x
▲ Vercel	Next.js (Turbopack)	24.310s (+23.9% 🔺)	26.317s (+25.3% 🔺)	2.007s	4	1.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.163s (-1.3%)	2.008s (~)	0.845s	15	1.00x
🐘 Postgres	Nitro	1.168s (-2.8%)	2.007s (~)	0.839s	15	1.00x
🐘 Postgres	Next.js (Turbopack)	1.223s (-9.9% 🟢)	2.008s (-1.2%)	0.784s	15	1.05x
💻 Local	Nitro	1.384s (+6.8% 🔺)	2.006s (~)	0.622s	15	1.19x
💻 Local	Next.js (Turbopack)	1.393s (-0.6%)	2.006s (~)	0.613s	15	1.20x
💻 Local	Express	1.417s (~)	2.007s (~)	0.590s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.812s (+47.0% 🔺)	4.763s (+25.3% 🔺)	1.951s	7	1.00x
▲ Vercel	Nitro	3.188s (+45.2% 🔺)	4.695s (+29.3% 🔺)	1.506s	7	1.13x
▲ Vercel	Next.js (Turbopack)	3.872s (+15.0% 🔺)	5.654s (+17.6% 🔺)	1.783s	6	1.38x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.310s (-3.9%)	2.393s (-4.6%)	1.083s	13	1.00x
🐘 Postgres	Express	1.310s (+1.2%)	2.316s (-10.6% 🟢)	1.006s	13	1.00x
🐘 Postgres	Next.js (Turbopack)	1.329s (-5.4% 🟢)	3.011s (~)	1.682s	10	1.01x
💻 Local	Express	2.442s (-11.7% 🟢)	3.009s (~)	0.567s	10	1.86x
💻 Local	Nitro	2.509s (+4.1%)	3.009s (~)	0.500s	10	1.92x
💻 Local	Next.js (Turbopack)	2.519s (-3.4%)	3.109s (+3.3%)	0.590s	10	1.92x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.900s (+4.4%)	4.510s (+0.6%)	1.609s	7	1.00x
▲ Vercel	Nitro	3.058s (+22.0% 🔺)	4.827s (+31.1% 🔺)	1.769s	7	1.05x
▲ Vercel	Next.js (Turbopack)	5.219s (+48.9% 🔺)	7.116s (+52.2% 🔺)	1.897s	5	1.80x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.562s (-6.1% 🟢)	4.138s (-3.8%)	2.576s	8	1.00x
🐘 Postgres	Express	1.564s (-1.2%)	4.012s (-3.0%)	2.448s	8	1.00x
🐘 Postgres	Next.js (Turbopack)	2.921s (+2.3%)	5.848s (+9.3% 🔺)	2.927s	6	1.87x
💻 Local	Nitro	5.751s (+5.3% 🔺)	6.213s (+3.2%)	0.461s	5	3.68x
💻 Local	Express	6.057s (-3.8%)	6.815s (~)	0.759s	5	3.88x
💻 Local	Next.js (Turbopack)	6.652s (-10.2% 🟢)	7.767s (-8.8% 🟢)	1.115s	4	4.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.971s (+28.7% 🔺)	5.501s (+15.5% 🔺)	1.530s	6	1.00x
▲ Vercel	Nitro	4.357s (+54.4% 🔺)	6.158s (+30.1% 🔺)	1.800s	6	1.10x
▲ Vercel	Next.js (Turbopack)	5.269s (+4.0%)	7.268s (+11.7% 🔺)	1.999s	5	1.33x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.163s (-2.7%)	2.007s (~)	0.844s	15	1.00x
🐘 Postgres	Express	1.171s (-20.0% 🟢)	2.008s (-9.6% 🟢)	0.837s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.188s (-8.4% 🟢)	2.008s (-1.0%)	0.820s	15	1.02x
💻 Local	Nitro	1.383s (+16.8% 🔺)	2.007s (~)	0.623s	15	1.19x
💻 Local	Express	1.429s (-1.0%)	2.007s (~)	0.577s	15	1.23x
💻 Local	Next.js (Turbopack)	1.461s (-9.9% 🟢)	2.008s (-3.2%)	0.547s	15	1.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.691s (+32.5% 🔺)	4.319s (+25.5% 🔺)	1.629s	8	1.00x
▲ Vercel	Express	3.497s (+73.0% 🔺)	5.237s (+35.7% 🔺)	1.740s	6	1.30x
▲ Vercel	Next.js (Turbopack)	3.771s (+26.1% 🔺)	5.557s (+23.7% 🔺)	1.786s	6	1.40x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.296s (-8.4% 🟢)	3.009s (+8.2% 🔺)	1.712s	10	1.00x
🐘 Postgres	Express	1.301s (-1.9%)	2.593s (+11.9% 🔺)	1.292s	12	1.00x
🐘 Postgres	Nitro	1.327s (+0.9%)	2.317s (-7.7% 🟢)	0.989s	13	1.02x
💻 Local	Nitro	2.489s (+4.5%)	3.008s (~)	0.519s	10	1.92x
💻 Local	Next.js (Turbopack)	2.668s (+9.9% 🔺)	3.008s (-3.2%)	0.341s	10	2.06x
💻 Local	Express	2.673s (~)	3.100s (+6.2% 🔺)	0.427s	11	2.06x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.978s (+26.4% 🔺)	4.484s (+23.3% 🔺)	1.505s	7	1.00x
▲ Vercel	Express	3.425s (+57.5% 🔺)	5.201s (+35.4% 🔺)	1.776s	6	1.15x
▲ Vercel	Next.js (Turbopack)	4.353s (+24.5% 🔺)	6.479s (+32.7% 🔺)	2.126s	5	1.46x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.568s (-6.0% 🟢)	4.136s (-4.0%)	2.568s	8	1.00x
🐘 Postgres	Express	1.576s (~)	4.011s (-3.0%)	2.435s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	2.881s (+4.9%)	5.683s (+8.8% 🔺)	2.802s	6	1.84x
💻 Local	Next.js (Turbopack)	5.291s (-31.2% 🟢)	6.216s (-29.2% 🟢)	0.925s	5	3.37x
💻 Local	Nitro	6.030s (+11.0% 🔺)	7.018s (+9.4% 🔺)	0.988s	5	3.85x
💻 Local	Express	6.332s (+3.1%)	7.020s (+3.0%)	0.687s	5	4.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.900s (+34.8% 🔺)	5.580s (+15.3% 🔺)	1.680s	6	1.00x
▲ Vercel	Nitro	4.380s (+56.8% 🔺)	6.040s (+28.1% 🔺)	1.661s	6	1.12x
▲ Vercel	Next.js (Turbopack)	6.451s (+62.8% 🔺)	8.213s (+49.9% 🔺)	1.762s	4	1.65x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.523s (+1.8%)	1.023s (+1.7%)	0.500s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.534s (-14.5% 🟢)	1.007s (-6.3% 🟢)	0.472s	60	1.02x
💻 Local	Nitro	0.543s (+21.8% 🔺)	1.005s (~)	0.462s	60	1.04x
🐘 Postgres	Nitro	0.551s (-4.2%)	1.023s (~)	0.472s	59	1.05x
💻 Local	Express	0.559s (-2.1%)	1.005s (~)	0.446s	60	1.07x
💻 Local	Next.js (Turbopack)	0.612s (-6.7% 🟢)	1.022s (~)	0.410s	59	1.17x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.641s (+67.1% 🔺)	6.456s (+36.2% 🔺)	1.815s	10	1.00x
▲ Vercel	Express	4.768s (+85.7% 🔺)	6.430s (+60.0% 🔺)	1.662s	10	1.03x
▲ Vercel	Next.js (Turbopack)	5.565s (+44.9% 🔺)	7.357s (+35.7% 🔺)	1.792s	9	1.20x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.237s (-1.6%)	2.030s (~)	0.793s	45	1.00x
🐘 Postgres	Nitro	1.255s (-9.5% 🟢)	2.029s (+1.1%)	0.774s	45	1.01x
🐘 Postgres	Next.js (Turbopack)	1.272s (-26.0% 🟢)	2.008s (-13.8% 🟢)	0.736s	45	1.03x
💻 Local	Nitro	1.385s (+33.7% 🔺)	2.006s (+38.2% 🔺)	0.620s	45	1.12x
💻 Local	Express	1.414s (+1.2%)	2.006s (~)	0.592s	45	1.14x
💻 Local	Next.js (Turbopack)	1.467s (-3.8%)	2.006s (~)	0.539s	45	1.19x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.197s (+50.2% 🔺)	10.859s (+46.0% 🔺)	1.662s	9	1.00x
▲ Vercel	Express	9.934s (+43.9% 🔺)	11.416s (+30.7% 🔺)	1.482s	8	1.08x
▲ Vercel	Next.js (Turbopack)	11.607s (+36.5% 🔺)	13.869s (+35.5% 🔺)	2.262s	7	1.26x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.409s (-16.8% 🟢)	3.058s (-6.0% 🟢)	0.650s	40	1.00x
🐘 Postgres	Express	2.494s (+4.4%)	3.086s (+1.7%)	0.592s	39	1.04x
🐘 Postgres	Next.js (Turbopack)	2.555s (-17.2% 🟢)	3.008s (-16.5% 🟢)	0.453s	40	1.06x
💻 Local	Nitro	3.075s (+38.7% 🔺)	3.645s (+29.1% 🔺)	0.570s	33	1.28x
💻 Local	Express	3.095s (+1.6%)	3.645s (+1.4%)	0.550s	33	1.29x
💻 Local	Next.js (Turbopack)	3.315s (-0.6%)	4.042s (+0.8%)	0.727s	30	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	18.529s (+40.8% 🔺)	20.148s (+28.8% 🔺)	1.619s	6	1.00x
▲ Vercel	Nitro	20.114s (+50.4% 🔺)	21.738s (+44.4% 🔺)	1.623s	6	1.09x
▲ Vercel	Next.js (Turbopack)	24.421s (+27.0% 🔺)	26.387s (+27.2% 🔺)	1.965s	5	1.32x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.181s (-29.9% 🟢)	1.006s (-0.9%)	0.825s	60	1.00x
🐘 Postgres	Express	0.194s (-4.3%)	1.007s (~)	0.813s	60	1.07x
🐘 Postgres	Nitro	0.204s (-10.8% 🟢)	1.006s (~)	0.802s	60	1.13x
💻 Local	Nitro	0.445s (+18.3% 🔺)	1.004s (~)	0.559s	60	2.46x
💻 Local	Express	0.493s (+5.7% 🔺)	1.005s (~)	0.512s	60	2.72x
💻 Local	Next.js (Turbopack)	0.587s (-4.9%)	1.005s (~)	0.417s	60	3.24x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.562s (+45.2% 🔺)	3.076s (+24.7% 🔺)	1.514s	20	1.00x
▲ Vercel	Express	1.593s (+58.0% 🔺)	3.063s (+14.5% 🔺)	1.470s	20	1.02x
▲ Vercel	Next.js (Turbopack)	2.854s (+40.0% 🔺)	4.819s (+44.2% 🔺)	1.965s	13	1.83x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.284s (-47.0% 🟢)	1.006s (-11.2% 🟢)	0.722s	90	1.00x
🐘 Postgres	Express	0.297s (-3.1%)	1.006s (~)	0.709s	90	1.05x
🐘 Postgres	Nitro	0.329s (-7.5% 🟢)	1.007s (~)	0.678s	90	1.16x
💻 Local	Nitro	2.142s (+44.1% 🔺)	2.715s (+32.2% 🔺)	0.573s	34	7.54x
💻 Local	Express	2.215s (-2.5%)	2.797s (-2.0%)	0.581s	33	7.80x
💻 Local	Next.js (Turbopack)	2.645s (-5.3% 🟢)	3.182s (-4.8%)	0.537s	29	9.31x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.821s (+23.8% 🔺)	3.288s (+2.2%)	1.467s	28	1.00x
▲ Vercel	Nitro	2.117s (+62.5% 🔺)	3.936s (+47.2% 🔺)	1.819s	23	1.16x
▲ Vercel	Next.js (Turbopack)	3.520s (+38.3% 🔺)	5.325s (+41.6% 🔺)	1.805s	17	1.93x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.484s (-6.3% 🟢)	1.078s (+2.7%)	0.594s	112	1.00x
🐘 Postgres	Next.js (Turbopack)	0.507s (-42.2% 🟢)	3.059s (+21.0% 🔺)	2.552s	40	1.05x
🐘 Postgres	Nitro	0.536s (-3.4%)	1.042s (-6.0% 🟢)	0.506s	116	1.11x
💻 Local	Express	9.046s (-3.7%)	10.108s (-4.8%)	1.062s	12	18.67x
💻 Local	Nitro	9.214s (+23.9% 🔺)	10.197s (+23.0% 🔺)	0.983s	12	19.02x
💻 Local	Next.js (Turbopack)	9.879s (-7.5% 🟢)	10.695s (-8.3% 🟢)	0.816s	12	20.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.668s (+34.1% 🔺)	4.112s (+4.9%)	1.444s	30	1.00x
▲ Vercel	Nitro	2.668s (+46.7% 🔺)	4.242s (+17.1% 🔺)	1.574s	29	1.00x
▲ Vercel	Next.js (Turbopack)	4.857s (+29.6% 🔺)	6.914s (+32.5% 🔺)	2.056s	18	1.82x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.131s (-0.5%)	1.970s (~)	0.010s (+3.0%)	2.018s (~)	0.886s	10	1.00x
💻 Local	Express	1.145s (~)	2.004s (~)	0.010s (-5.5% 🟢)	2.018s (~)	0.873s	10	1.01x
🐘 Postgres	Express	1.146s (-0.8%)	2.000s (~)	0.001s (+33.3% 🔺)	2.010s (~)	0.864s	10	1.01x
🐘 Postgres	Nitro	1.151s (-2.1%)	1.998s (~)	0.001s (-8.3% 🟢)	2.010s (~)	0.860s	10	1.02x
💻 Local	Nitro	1.151s (+3.5%)	2.004s (~)	0.010s (-69.2% 🟢)	2.017s (-1.2%)	0.866s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.156s (-11.3% 🟢)	2.000s (~)	0.001s (-93.4% 🟢)	2.011s (-1.4%)	0.855s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.274s (+19.2% 🔺)	3.470s (+13.4% 🔺)	4.051s (+169.2% 🔺)	8.006s (+59.2% 🔺)	5.732s	10	1.00x
▲ Vercel	Express	2.296s (+18.3% 🔺)	3.216s (-4.9%)	3.994s (+164.2% 🔺)	7.662s (+42.3% 🔺)	5.366s	10	1.01x
▲ Vercel	Next.js (Turbopack)	4.036s (+20.6% 🔺)	4.384s (+20.3% 🔺)	3.119s (+124.5% 🔺)	9.016s (+42.1% 🔺)	4.979s	10	1.77x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.530s (-0.7%)	2.006s (~)	0.004s (-16.1% 🟢)	2.024s (~)	0.493s	30	1.00x
💻 Local	Nitro	1.533s (+8.6% 🔺)	2.009s (~)	0.012s (-37.3% 🟢)	2.023s (~)	0.491s	30	1.00x
💻 Local	Express	1.533s (-1.3%)	2.010s (~)	0.014s (-5.8% 🟢)	2.026s (~)	0.493s	30	1.00x
🐘 Postgres	Next.js (Turbopack)	1.573s (-20.2% 🟢)	2.009s (-16.0% 🟢)	0.005s (+32.4% 🔺)	2.026s (-16.2% 🟢)	0.454s	30	1.03x
💻 Local	Next.js (Turbopack)	1.578s (-1.8%)	1.972s (~)	0.014s (+3.5%)	2.027s (~)	0.448s	30	1.03x
🐘 Postgres	Nitro	1.618s (-0.9%)	2.000s (~)	0.005s (+1.3%)	2.030s (~)	0.411s	30	1.06x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.437s (+15.3% 🔺)	7.697s (+14.8% 🔺)	0.410s (+87.5% 🔺)	8.593s (+16.0% 🔺)	2.156s	7	1.00x
▲ Vercel	Express	6.851s (+19.0% 🔺)	8.021s (+9.0% 🔺)	0.538s (+111.5% 🔺)	8.977s (+10.6% 🔺)	2.126s	7	1.06x
▲ Vercel	Next.js (Turbopack)	11.230s (+20.8% 🔺)	12.363s (+22.7% 🔺)	0.212s (-20.7% 🟢)	13.650s (+21.4% 🔺)	2.420s	5	1.74x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.768s (+4.1%)	1.031s (~)	0.000s (+Infinity% 🔺)	1.064s (+1.0%)	0.297s	57	1.00x
🐘 Postgres	Nitro	0.817s (-1.8%)	1.082s (-1.7%)	0.000s (+194.5% 🔺)	1.101s (-1.7%)	0.284s	55	1.06x
🐘 Postgres	Next.js (Turbopack)	0.982s (-10.2% 🟢)	1.386s (-16.5% 🟢)	0.000s (+Infinity% 🔺)	1.394s (-17.1% 🟢)	0.412s	44	1.28x
💻 Local	Nitro	1.249s (+30.7% 🔺)	2.013s (+53.1% 🔺)	0.000s (-56.2% 🟢)	2.016s (+52.9% 🔺)	0.767s	30	1.63x
💻 Local	Express	1.264s (-5.2% 🟢)	2.014s (~)	0.000s (-47.8% 🟢)	2.017s (~)	0.753s	30	1.65x
💻 Local	Next.js (Turbopack)	1.396s (-4.3%)	1.980s (~)	0.000s (+200.0% 🔺)	2.016s (~)	0.620s	30	1.82x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.832s (+37.6% 🔺)	4.875s (+16.8% 🔺)	0.003s (+Infinity% 🔺)	5.348s (+15.3% 🔺)	1.516s	12	1.00x
▲ Vercel	Express	4.028s (+41.5% 🔺)	4.936s (+10.6% 🔺)	0.000s (-100.0% 🟢)	5.410s (+8.5% 🔺)	1.381s	12	1.05x
▲ Vercel	Next.js (Turbopack)	6.034s (+23.5% 🔺)	6.572s (+22.2% 🔺)	0.000s (+275.0% 🔺)	7.715s (+20.7% 🔺)	1.681s	8	1.57x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

fan-out fan-in 10 streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.679s (+2.1%)	2.332s (+3.6%)	0.000s (~)	2.342s (+2.9%)	0.662s	27	1.00x
🐘 Postgres	Nitro	1.947s (+11.8% 🔺)	2.495s (+7.0% 🔺)	0.000s (-100.0% 🟢)	2.518s (+7.4% 🔺)	0.571s	24	1.16x
🐘 Postgres	Next.js (Turbopack)	2.408s (-28.7% 🟢)	3.052s (-21.3% 🟢)	0.000s (NaN%)	3.069s (-21.8% 🟢)	0.661s	20	1.43x
💻 Local	Nitro	3.378s (+54.7% 🔺)	3.899s (+49.6% 🔺)	0.001s (-25.0% 🟢)	3.906s (+49.6% 🔺)	0.528s	16	2.01x
💻 Local	Express	3.384s (+0.7%)	4.021s (+3.1%)	0.001s (-43.1% 🟢)	4.029s (+3.1%)	0.645s	15	2.02x
💻 Local	Next.js (Turbopack)	3.838s (-5.1% 🟢)	4.322s (-3.8%)	0.001s (+0.5%)	4.368s (-3.7%)	0.530s	15	2.29x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.799s (+6.0% 🔺)	6.896s (+12.8% 🔺)	0.000s (NaN%)	7.380s (+3.3%)	1.582s	9	1.00x
▲ Vercel	Express	6.142s (+18.9% 🔺)	7.342s (+12.3% 🔺)	0.000s (+Infinity% 🔺)	7.767s (+9.7% 🔺)	1.625s	8	1.06x
▲ Vercel	Next.js (Turbopack)	8.257s (+19.7% 🔺)	9.065s (+20.3% 🔺)	0.000s (+Infinity% 🔺)	10.142s (+18.0% 🔺)	1.886s	7	1.42x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	17/21
🐘 Postgres	Express	9/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Next.js (Turbopack)	🐘 Postgres	17/21
Nitro	🐘 Postgres	14/21

Column Definitions

• Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
• TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
• Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
• Wall Time: Total testbench time (trigger workflow + poll for result)
• Overhead: Testbench overhead (Wall Time - Workflow Time)
• Samples: Number of benchmark iterations run
• vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

• 💻 Local: In-memory filesystem world (local development)
• 🐘 Postgres: PostgreSQL database world (local development)
• ▲ Vercel: Vercel production/preview deployment
• 🌐 Turso: Community world (local development)
• 🌐 MongoDB: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Jazz: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Redis + BullMQ: Community world (local development)
• 🌐 Cloudflare: Community world (local development)
• 🌐 MySQL: Community world (local development)
• 🌐 Azure: Community world (local development)
• 🌐 NATS JetStream: Community world (local development)
• 🌐 Upstash: Community world (local development)
• 🌐 Platformatic: Community world (local development)

---

📋 View full workflow run

[VaguelySerious]

CI status (interim)

Two failures, both pre-existing on main — not introduced by this PR:

1. E2E Local Dev Tests (vite - stable) — failing tests basic step error preserves message and stack trace and cross-file step error preserves message and function names in stack both fail on the most recent main run (job 73444472541) with the same assertion. Unrelated to AI SDK changes.
2. Docs Preview Smoke Checks — Vercel API returning 403 invalidToken while polling for the preview deployment. Infra/credential issue, not code.

12 E2E Postgres jobs still pending; will check back when they complete.

[VaguelySerious]

CI status (final)

88 pass, 5 skipping, 5 still-running benchmarks, 4 failures — none caused by this PR.

Check	Status	Verdict
E2E Local Dev Tests (vite - stable)	fail	Same 2 tests (basic step error preserves message and stack trace, cross-file step error preserves message and function names in stack) fail on the latest main run (job 73444472541). Pre-existing.
E2E Windows Tests	fail (cancelled at 30m)	dev.test.ts > should rebuild on imported step dependency change timed out on hot-reload polling (Failed to trigger workflow "importedStepOnlyWorkflow": 500). Same 30m20s/30m24s cancellation pattern visible on PRs #1857 and #1854 — known Windows-job timeout flake, unrelated to AI SDK changes.
Docs Preview Smoke Checks	fail	Vercel API 403 invalidToken while polling for the preview deployment URL. Infra/credential issue, the deployment itself succeeded.
E2E Required Check	fail (3s)	Aggregator that reports failure when any of the above E2E jobs fail. No independent signal.

The 5 pending Benchmark * jobs are still in progress (>30 min in) and are independent of type/contract changes in @workflow/ai.

Marking the PR as ready for review when you take a look.

[karthikscale3]

Looks good. The updated implementation preserves the full AI SDK usage shape for DurableAgent totalUsage and adds targeted coverage for the ToolLoopAgent-alignment case.

[VaguelySerious]

Summary

DurableAgentStreamResult (the awaited return of agent.stream()) is missing totalUsage and finishReason. Both fields are already computed in the runtime and passed to the onFinish callback, so the omission from the result is asymmetric and diverges from the AI SDK's GenerateTextResult/StreamTextResult which expose them directly.

This adds them to the interface and to all three return sites (early-abort, paused-tools, and the final return), reusing the existing aggregateUsage(steps) helper.

See also vercel/ai#14786

Test plan

• New regression test in durable-agent-compat.test.ts asserts result.totalUsage and result.finishReason after a normal stream
• Existing 187 tests still pass (188 with the new one)
• Build passes (pnpm build in packages/ai)

🤖 Generated with Claude Code

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-astro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-express-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-fastify-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-hono-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nitro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nuxt-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-vite-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-docs	Ready	Preview, Comment, Open in v0	Jun 26, 2026 11:53pm
workflow-swc-playground	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-tarballs	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-web	Ready	Preview, Comment	Jun 26, 2026 11:53pm

[changeset-bot]

🦋 Changeset detected

Latest commit: 476187c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@workflow/ai	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1442	0	230	1672
✅ 💻 Local Development	1605	0	219	1824
✅ 📦 Local Production	1605	0	219	1824
✅ 🐘 Local Postgres	1593	0	231	1824
✅ 🪟 Windows	152	0	0	152
✅ 📋 Other	885	0	179	1064
Total	7282	0	1078	8360

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	125	0	27
✅ example	125	0	27
✅ express	125	0	27
✅ fastify	125	0	27
✅ hono	125	0	27
✅ nextjs-turbopack	149	0	3
✅ nextjs-webpack	149	0	3
✅ nitro	125	0	27
✅ nuxt	125	0	27
✅ sveltekit	144	0	8
✅ vite	125	0	27

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	126	0	26
✅ express-stable	126	0	26
✅ fastify-stable	126	0	26
✅ hono-stable	126	0	26
✅ nextjs-turbopack-canary	132	0	20
✅ nextjs-turbopack-stable	151	0	1
✅ nextjs-webpack-canary	132	0	20
✅ nextjs-webpack-stable	151	0	1
✅ nitro-stable	126	0	26
✅ nuxt-stable	126	0	26
✅ sveltekit-stable	145	0	7
✅ vite-stable	126	0	26

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	152	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	127	0	25
✅ e2e-local-dev-tanstack-start-	127	0	25
✅ e2e-local-postgres-nest-stable	126	0	26
✅ e2e-local-postgres-tanstack-start-	126	0	26
✅ e2e-local-prod-nest-stable	127	0	25
✅ e2e-local-prod-tanstack-start-	127	0	25
✅ e2e-vercel-prod-tanstack-start	125	0	27

---

📋 View full workflow run

[github-actions]

📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.043s (+23.1% 🔺)	1.005s (~)	0.962s	10	1.00x
💻 Local	Express	0.045s (-8.1% 🟢)	1.006s (~)	0.961s	10	1.05x
💻 Local	Next.js (Turbopack)	0.048s (-4.0%)	1.007s (~)	0.959s	10	1.12x
🐘 Postgres	Next.js (Turbopack)	0.058s (-50.6% 🟢)	1.012s (-3.9%)	0.954s	10	1.35x
🐘 Postgres	Express	0.059s (-6.5% 🟢)	1.011s (~)	0.952s	10	1.36x
🐘 Postgres	Nitro	0.066s (-6.9% 🟢)	1.013s (~)	0.947s	10	1.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.209s (-0.5%)	1.724s (+15.3% 🔺)	1.515s	10	1.00x
▲ Vercel	Next.js (Turbopack)	0.255s (-53.5% 🟢)	2.054s (+1.1%)	1.800s	10	1.22x
▲ Vercel	Nitro	0.257s (+30.0% 🔺)	1.832s (+7.3% 🔺)	1.575s	10	1.23x

🔍 Observability: Express | Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.076s (+0.9%)	2.008s (~)	0.932s	10	1.00x
💻 Local	Express	1.083s (~)	2.007s (~)	0.924s	10	1.01x
💻 Local	Next.js (Turbopack)	1.084s (~)	2.006s (~)	0.922s	10	1.01x
🐘 Postgres	Express	1.092s (~)	2.010s (~)	0.918s	10	1.01x
🐘 Postgres	Nitro	1.094s (-0.6%)	2.009s (~)	0.916s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.101s (+1.6%)	2.010s (~)	0.909s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.435s (+2.0%)	2.900s (+2.4%)	1.466s	10	1.00x
▲ Vercel	Nitro	1.523s (+10.2% 🔺)	3.036s (-2.3%)	1.513s	10	1.06x
▲ Vercel	Next.js (Turbopack)	2.444s (+13.8% 🔺)	4.123s (+16.1% 🔺)	1.679s	10	1.70x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.420s (~)	11.022s (~)	0.601s	3	1.00x
🐘 Postgres	Nitro	10.435s (-0.9%)	11.015s (~)	0.581s	3	1.00x
💻 Local	Next.js (Turbopack)	10.442s (~)	11.024s (~)	0.582s	3	1.00x
💻 Local	Express	10.451s (~)	11.023s (~)	0.572s	3	1.00x
🐘 Postgres	Express	10.457s (~)	11.021s (~)	0.564s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.540s (-1.6%)	11.020s (~)	0.480s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	12.664s (+7.0% 🔺)	14.760s (+11.3% 🔺)	2.096s	3	1.00x
▲ Vercel	Express	12.909s (+9.8% 🔺)	14.630s (+5.3% 🔺)	1.722s	3	1.02x
▲ Vercel	Next.js (Turbopack)	13.171s (+4.1%)	15.097s (+8.9% 🔺)	1.926s	2	1.04x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	13.547s (~)	14.027s (~)	0.480s	5	1.00x
🐘 Postgres	Nitro	13.569s (-1.1%)	14.021s (~)	0.452s	5	1.00x
🐘 Postgres	Express	13.571s (-0.8%)	14.019s (~)	0.449s	5	1.00x
🐘 Postgres	Next.js (Turbopack)	13.585s (~)	14.022s (~)	0.437s	5	1.00x
💻 Local	Express	13.596s (~)	14.028s (~)	0.432s	5	1.00x
💻 Local	Next.js (Turbopack)	13.655s (~)	14.027s (~)	0.372s	5	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	18.355s (-1.3%)	20.041s (-2.6%)	1.686s	4	1.00x
▲ Vercel	Express	18.872s (+10.6% 🔺)	20.504s (+8.3% 🔺)	1.631s	3	1.03x
▲ Vercel	Next.js (Turbopack)	19.242s (+5.4% 🔺)	21.587s (+6.9% 🔺)	2.345s	3	1.05x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.032s (+2.0%)	12.648s (+5.1% 🔺)	0.617s	8	1.00x
🐘 Postgres	Nitro	12.098s (-1.6%)	13.019s (~)	0.921s	7	1.01x
💻 Local	Express	12.158s (-1.6%)	13.024s (~)	0.866s	7	1.01x
🐘 Postgres	Next.js (Turbopack)	12.218s (-1.3%)	13.016s (~)	0.797s	7	1.02x
🐘 Postgres	Express	12.330s (+1.8%)	13.021s (+1.2%)	0.691s	7	1.02x
💻 Local	Next.js (Turbopack)	12.385s (~)	13.027s (~)	0.642s	7	1.03x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	22.509s (+26.2% 🔺)	24.128s (+23.8% 🔺)	1.619s	4	1.00x
▲ Vercel	Express	23.401s (+29.5% 🔺)	25.075s (+24.1% 🔺)	1.674s	4	1.04x
▲ Vercel	Next.js (Turbopack)	24.310s (+23.9% 🔺)	26.317s (+25.3% 🔺)	2.007s	4	1.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.163s (-1.3%)	2.008s (~)	0.845s	15	1.00x
🐘 Postgres	Nitro	1.168s (-2.8%)	2.007s (~)	0.839s	15	1.00x
🐘 Postgres	Next.js (Turbopack)	1.223s (-9.9% 🟢)	2.008s (-1.2%)	0.784s	15	1.05x
💻 Local	Nitro	1.384s (+6.8% 🔺)	2.006s (~)	0.622s	15	1.19x
💻 Local	Next.js (Turbopack)	1.393s (-0.6%)	2.006s (~)	0.613s	15	1.20x
💻 Local	Express	1.417s (~)	2.007s (~)	0.590s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.812s (+47.0% 🔺)	4.763s (+25.3% 🔺)	1.951s	7	1.00x
▲ Vercel	Nitro	3.188s (+45.2% 🔺)	4.695s (+29.3% 🔺)	1.506s	7	1.13x
▲ Vercel	Next.js (Turbopack)	3.872s (+15.0% 🔺)	5.654s (+17.6% 🔺)	1.783s	6	1.38x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.310s (-3.9%)	2.393s (-4.6%)	1.083s	13	1.00x
🐘 Postgres	Express	1.310s (+1.2%)	2.316s (-10.6% 🟢)	1.006s	13	1.00x
🐘 Postgres	Next.js (Turbopack)	1.329s (-5.4% 🟢)	3.011s (~)	1.682s	10	1.01x
💻 Local	Express	2.442s (-11.7% 🟢)	3.009s (~)	0.567s	10	1.86x
💻 Local	Nitro	2.509s (+4.1%)	3.009s (~)	0.500s	10	1.92x
💻 Local	Next.js (Turbopack)	2.519s (-3.4%)	3.109s (+3.3%)	0.590s	10	1.92x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.900s (+4.4%)	4.510s (+0.6%)	1.609s	7	1.00x
▲ Vercel	Nitro	3.058s (+22.0% 🔺)	4.827s (+31.1% 🔺)	1.769s	7	1.05x
▲ Vercel	Next.js (Turbopack)	5.219s (+48.9% 🔺)	7.116s (+52.2% 🔺)	1.897s	5	1.80x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.562s (-6.1% 🟢)	4.138s (-3.8%)	2.576s	8	1.00x
🐘 Postgres	Express	1.564s (-1.2%)	4.012s (-3.0%)	2.448s	8	1.00x
🐘 Postgres	Next.js (Turbopack)	2.921s (+2.3%)	5.848s (+9.3% 🔺)	2.927s	6	1.87x
💻 Local	Nitro	5.751s (+5.3% 🔺)	6.213s (+3.2%)	0.461s	5	3.68x
💻 Local	Express	6.057s (-3.8%)	6.815s (~)	0.759s	5	3.88x
💻 Local	Next.js (Turbopack)	6.652s (-10.2% 🟢)	7.767s (-8.8% 🟢)	1.115s	4	4.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.971s (+28.7% 🔺)	5.501s (+15.5% 🔺)	1.530s	6	1.00x
▲ Vercel	Nitro	4.357s (+54.4% 🔺)	6.158s (+30.1% 🔺)	1.800s	6	1.10x
▲ Vercel	Next.js (Turbopack)	5.269s (+4.0%)	7.268s (+11.7% 🔺)	1.999s	5	1.33x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.163s (-2.7%)	2.007s (~)	0.844s	15	1.00x
🐘 Postgres	Express	1.171s (-20.0% 🟢)	2.008s (-9.6% 🟢)	0.837s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.188s (-8.4% 🟢)	2.008s (-1.0%)	0.820s	15	1.02x
💻 Local	Nitro	1.383s (+16.8% 🔺)	2.007s (~)	0.623s	15	1.19x
💻 Local	Express	1.429s (-1.0%)	2.007s (~)	0.577s	15	1.23x
💻 Local	Next.js (Turbopack)	1.461s (-9.9% 🟢)	2.008s (-3.2%)	0.547s	15	1.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.691s (+32.5% 🔺)	4.319s (+25.5% 🔺)	1.629s	8	1.00x
▲ Vercel	Express	3.497s (+73.0% 🔺)	5.237s (+35.7% 🔺)	1.740s	6	1.30x
▲ Vercel	Next.js (Turbopack)	3.771s (+26.1% 🔺)	5.557s (+23.7% 🔺)	1.786s	6	1.40x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.296s (-8.4% 🟢)	3.009s (+8.2% 🔺)	1.712s	10	1.00x
🐘 Postgres	Express	1.301s (-1.9%)	2.593s (+11.9% 🔺)	1.292s	12	1.00x
🐘 Postgres	Nitro	1.327s (+0.9%)	2.317s (-7.7% 🟢)	0.989s	13	1.02x
💻 Local	Nitro	2.489s (+4.5%)	3.008s (~)	0.519s	10	1.92x
💻 Local	Next.js (Turbopack)	2.668s (+9.9% 🔺)	3.008s (-3.2%)	0.341s	10	2.06x
💻 Local	Express	2.673s (~)	3.100s (+6.2% 🔺)	0.427s	11	2.06x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.978s (+26.4% 🔺)	4.484s (+23.3% 🔺)	1.505s	7	1.00x
▲ Vercel	Express	3.425s (+57.5% 🔺)	5.201s (+35.4% 🔺)	1.776s	6	1.15x
▲ Vercel	Next.js (Turbopack)	4.353s (+24.5% 🔺)	6.479s (+32.7% 🔺)	2.126s	5	1.46x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.568s (-6.0% 🟢)	4.136s (-4.0%)	2.568s	8	1.00x
🐘 Postgres	Express	1.576s (~)	4.011s (-3.0%)	2.435s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	2.881s (+4.9%)	5.683s (+8.8% 🔺)	2.802s	6	1.84x
💻 Local	Next.js (Turbopack)	5.291s (-31.2% 🟢)	6.216s (-29.2% 🟢)	0.925s	5	3.37x
💻 Local	Nitro	6.030s (+11.0% 🔺)	7.018s (+9.4% 🔺)	0.988s	5	3.85x
💻 Local	Express	6.332s (+3.1%)	7.020s (+3.0%)	0.687s	5	4.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.900s (+34.8% 🔺)	5.580s (+15.3% 🔺)	1.680s	6	1.00x
▲ Vercel	Nitro	4.380s (+56.8% 🔺)	6.040s (+28.1% 🔺)	1.661s	6	1.12x
▲ Vercel	Next.js (Turbopack)	6.451s (+62.8% 🔺)	8.213s (+49.9% 🔺)	1.762s	4	1.65x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.523s (+1.8%)	1.023s (+1.7%)	0.500s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.534s (-14.5% 🟢)	1.007s (-6.3% 🟢)	0.472s	60	1.02x
💻 Local	Nitro	0.543s (+21.8% 🔺)	1.005s (~)	0.462s	60	1.04x
🐘 Postgres	Nitro	0.551s (-4.2%)	1.023s (~)	0.472s	59	1.05x
💻 Local	Express	0.559s (-2.1%)	1.005s (~)	0.446s	60	1.07x
💻 Local	Next.js (Turbopack)	0.612s (-6.7% 🟢)	1.022s (~)	0.410s	59	1.17x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.641s (+67.1% 🔺)	6.456s (+36.2% 🔺)	1.815s	10	1.00x
▲ Vercel	Express	4.768s (+85.7% 🔺)	6.430s (+60.0% 🔺)	1.662s	10	1.03x
▲ Vercel	Next.js (Turbopack)	5.565s (+44.9% 🔺)	7.357s (+35.7% 🔺)	1.792s	9	1.20x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.237s (-1.6%)	2.030s (~)	0.793s	45	1.00x
🐘 Postgres	Nitro	1.255s (-9.5% 🟢)	2.029s (+1.1%)	0.774s	45	1.01x
🐘 Postgres	Next.js (Turbopack)	1.272s (-26.0% 🟢)	2.008s (-13.8% 🟢)	0.736s	45	1.03x
💻 Local	Nitro	1.385s (+33.7% 🔺)	2.006s (+38.2% 🔺)	0.620s	45	1.12x
💻 Local	Express	1.414s (+1.2%)	2.006s (~)	0.592s	45	1.14x
💻 Local	Next.js (Turbopack)	1.467s (-3.8%)	2.006s (~)	0.539s	45	1.19x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.197s (+50.2% 🔺)	10.859s (+46.0% 🔺)	1.662s	9	1.00x
▲ Vercel	Express	9.934s (+43.9% 🔺)	11.416s (+30.7% 🔺)	1.482s	8	1.08x
▲ Vercel	Next.js (Turbopack)	11.607s (+36.5% 🔺)	13.869s (+35.5% 🔺)	2.262s	7	1.26x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.409s (-16.8% 🟢)	3.058s (-6.0% 🟢)	0.650s	40	1.00x
🐘 Postgres	Express	2.494s (+4.4%)	3.086s (+1.7%)	0.592s	39	1.04x
🐘 Postgres	Next.js (Turbopack)	2.555s (-17.2% 🟢)	3.008s (-16.5% 🟢)	0.453s	40	1.06x
💻 Local	Nitro	3.075s (+38.7% 🔺)	3.645s (+29.1% 🔺)	0.570s	33	1.28x
💻 Local	Express	3.095s (+1.6%)	3.645s (+1.4%)	0.550s	33	1.29x
💻 Local	Next.js (Turbopack)	3.315s (-0.6%)	4.042s (+0.8%)	0.727s	30	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	18.529s (+40.8% 🔺)	20.148s (+28.8% 🔺)	1.619s	6	1.00x
▲ Vercel	Nitro	20.114s (+50.4% 🔺)	21.738s (+44.4% 🔺)	1.623s	6	1.09x
▲ Vercel	Next.js (Turbopack)	24.421s (+27.0% 🔺)	26.387s (+27.2% 🔺)	1.965s	5	1.32x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.181s (-29.9% 🟢)	1.006s (-0.9%)	0.825s	60	1.00x
🐘 Postgres	Express	0.194s (-4.3%)	1.007s (~)	0.813s	60	1.07x
🐘 Postgres	Nitro	0.204s (-10.8% 🟢)	1.006s (~)	0.802s	60	1.13x
💻 Local	Nitro	0.445s (+18.3% 🔺)	1.004s (~)	0.559s	60	2.46x
💻 Local	Express	0.493s (+5.7% 🔺)	1.005s (~)	0.512s	60	2.72x
💻 Local	Next.js (Turbopack)	0.587s (-4.9%)	1.005s (~)	0.417s	60	3.24x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.562s (+45.2% 🔺)	3.076s (+24.7% 🔺)	1.514s	20	1.00x
▲ Vercel	Express	1.593s (+58.0% 🔺)	3.063s (+14.5% 🔺)	1.470s	20	1.02x
▲ Vercel	Next.js (Turbopack)	2.854s (+40.0% 🔺)	4.819s (+44.2% 🔺)	1.965s	13	1.83x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.284s (-47.0% 🟢)	1.006s (-11.2% 🟢)	0.722s	90	1.00x
🐘 Postgres	Express	0.297s (-3.1%)	1.006s (~)	0.709s	90	1.05x
🐘 Postgres	Nitro	0.329s (-7.5% 🟢)	1.007s (~)	0.678s	90	1.16x
💻 Local	Nitro	2.142s (+44.1% 🔺)	2.715s (+32.2% 🔺)	0.573s	34	7.54x
💻 Local	Express	2.215s (-2.5%)	2.797s (-2.0%)	0.581s	33	7.80x
💻 Local	Next.js (Turbopack)	2.645s (-5.3% 🟢)	3.182s (-4.8%)	0.537s	29	9.31x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.821s (+23.8% 🔺)	3.288s (+2.2%)	1.467s	28	1.00x
▲ Vercel	Nitro	2.117s (+62.5% 🔺)	3.936s (+47.2% 🔺)	1.819s	23	1.16x
▲ Vercel	Next.js (Turbopack)	3.520s (+38.3% 🔺)	5.325s (+41.6% 🔺)	1.805s	17	1.93x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.484s (-6.3% 🟢)	1.078s (+2.7%)	0.594s	112	1.00x
🐘 Postgres	Next.js (Turbopack)	0.507s (-42.2% 🟢)	3.059s (+21.0% 🔺)	2.552s	40	1.05x
🐘 Postgres	Nitro	0.536s (-3.4%)	1.042s (-6.0% 🟢)	0.506s	116	1.11x
💻 Local	Express	9.046s (-3.7%)	10.108s (-4.8%)	1.062s	12	18.67x
💻 Local	Nitro	9.214s (+23.9% 🔺)	10.197s (+23.0% 🔺)	0.983s	12	19.02x
💻 Local	Next.js (Turbopack)	9.879s (-7.5% 🟢)	10.695s (-8.3% 🟢)	0.816s	12	20.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.668s (+34.1% 🔺)	4.112s (+4.9%)	1.444s	30	1.00x
▲ Vercel	Nitro	2.668s (+46.7% 🔺)	4.242s (+17.1% 🔺)	1.574s	29	1.00x
▲ Vercel	Next.js (Turbopack)	4.857s (+29.6% 🔺)	6.914s (+32.5% 🔺)	2.056s	18	1.82x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.131s (-0.5%)	1.970s (~)	0.010s (+3.0%)	2.018s (~)	0.886s	10	1.00x
💻 Local	Express	1.145s (~)	2.004s (~)	0.010s (-5.5% 🟢)	2.018s (~)	0.873s	10	1.01x
🐘 Postgres	Express	1.146s (-0.8%)	2.000s (~)	0.001s (+33.3% 🔺)	2.010s (~)	0.864s	10	1.01x
🐘 Postgres	Nitro	1.151s (-2.1%)	1.998s (~)	0.001s (-8.3% 🟢)	2.010s (~)	0.860s	10	1.02x
💻 Local	Nitro	1.151s (+3.5%)	2.004s (~)	0.010s (-69.2% 🟢)	2.017s (-1.2%)	0.866s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.156s (-11.3% 🟢)	2.000s (~)	0.001s (-93.4% 🟢)	2.011s (-1.4%)	0.855s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.274s (+19.2% 🔺)	3.470s (+13.4% 🔺)	4.051s (+169.2% 🔺)	8.006s (+59.2% 🔺)	5.732s	10	1.00x
▲ Vercel	Express	2.296s (+18.3% 🔺)	3.216s (-4.9%)	3.994s (+164.2% 🔺)	7.662s (+42.3% 🔺)	5.366s	10	1.01x
▲ Vercel	Next.js (Turbopack)	4.036s (+20.6% 🔺)	4.384s (+20.3% 🔺)	3.119s (+124.5% 🔺)	9.016s (+42.1% 🔺)	4.979s	10	1.77x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.530s (-0.7%)	2.006s (~)	0.004s (-16.1% 🟢)	2.024s (~)	0.493s	30	1.00x
💻 Local	Nitro	1.533s (+8.6% 🔺)	2.009s (~)	0.012s (-37.3% 🟢)	2.023s (~)	0.491s	30	1.00x
💻 Local	Express	1.533s (-1.3%)	2.010s (~)	0.014s (-5.8% 🟢)	2.026s (~)	0.493s	30	1.00x
🐘 Postgres	Next.js (Turbopack)	1.573s (-20.2% 🟢)	2.009s (-16.0% 🟢)	0.005s (+32.4% 🔺)	2.026s (-16.2% 🟢)	0.454s	30	1.03x
💻 Local	Next.js (Turbopack)	1.578s (-1.8%)	1.972s (~)	0.014s (+3.5%)	2.027s (~)	0.448s	30	1.03x
🐘 Postgres	Nitro	1.618s (-0.9%)	2.000s (~)	0.005s (+1.3%)	2.030s (~)	0.411s	30	1.06x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.437s (+15.3% 🔺)	7.697s (+14.8% 🔺)	0.410s (+87.5% 🔺)	8.593s (+16.0% 🔺)	2.156s	7	1.00x
▲ Vercel	Express	6.851s (+19.0% 🔺)	8.021s (+9.0% 🔺)	0.538s (+111.5% 🔺)	8.977s (+10.6% 🔺)	2.126s	7	1.06x
▲ Vercel	Next.js (Turbopack)	11.230s (+20.8% 🔺)	12.363s (+22.7% 🔺)	0.212s (-20.7% 🟢)	13.650s (+21.4% 🔺)	2.420s	5	1.74x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.768s (+4.1%)	1.031s (~)	0.000s (+Infinity% 🔺)	1.064s (+1.0%)	0.297s	57	1.00x
🐘 Postgres	Nitro	0.817s (-1.8%)	1.082s (-1.7%)	0.000s (+194.5% 🔺)	1.101s (-1.7%)	0.284s	55	1.06x
🐘 Postgres	Next.js (Turbopack)	0.982s (-10.2% 🟢)	1.386s (-16.5% 🟢)	0.000s (+Infinity% 🔺)	1.394s (-17.1% 🟢)	0.412s	44	1.28x
💻 Local	Nitro	1.249s (+30.7% 🔺)	2.013s (+53.1% 🔺)	0.000s (-56.2% 🟢)	2.016s (+52.9% 🔺)	0.767s	30	1.63x
💻 Local	Express	1.264s (-5.2% 🟢)	2.014s (~)	0.000s (-47.8% 🟢)	2.017s (~)	0.753s	30	1.65x
💻 Local	Next.js (Turbopack)	1.396s (-4.3%)	1.980s (~)	0.000s (+200.0% 🔺)	2.016s (~)	0.620s	30	1.82x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.832s (+37.6% 🔺)	4.875s (+16.8% 🔺)	0.003s (+Infinity% 🔺)	5.348s (+15.3% 🔺)	1.516s	12	1.00x
▲ Vercel	Express	4.028s (+41.5% 🔺)	4.936s (+10.6% 🔺)	0.000s (-100.0% 🟢)	5.410s (+8.5% 🔺)	1.381s	12	1.05x
▲ Vercel	Next.js (Turbopack)	6.034s (+23.5% 🔺)	6.572s (+22.2% 🔺)	0.000s (+275.0% 🔺)	7.715s (+20.7% 🔺)	1.681s	8	1.57x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

fan-out fan-in 10 streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.679s (+2.1%)	2.332s (+3.6%)	0.000s (~)	2.342s (+2.9%)	0.662s	27	1.00x
🐘 Postgres	Nitro	1.947s (+11.8% 🔺)	2.495s (+7.0% 🔺)	0.000s (-100.0% 🟢)	2.518s (+7.4% 🔺)	0.571s	24	1.16x
🐘 Postgres	Next.js (Turbopack)	2.408s (-28.7% 🟢)	3.052s (-21.3% 🟢)	0.000s (NaN%)	3.069s (-21.8% 🟢)	0.661s	20	1.43x
💻 Local	Nitro	3.378s (+54.7% 🔺)	3.899s (+49.6% 🔺)	0.001s (-25.0% 🟢)	3.906s (+49.6% 🔺)	0.528s	16	2.01x
💻 Local	Express	3.384s (+0.7%)	4.021s (+3.1%)	0.001s (-43.1% 🟢)	4.029s (+3.1%)	0.645s	15	2.02x
💻 Local	Next.js (Turbopack)	3.838s (-5.1% 🟢)	4.322s (-3.8%)	0.001s (+0.5%)	4.368s (-3.7%)	0.530s	15	2.29x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.799s (+6.0% 🔺)	6.896s (+12.8% 🔺)	0.000s (NaN%)	7.380s (+3.3%)	1.582s	9	1.00x
▲ Vercel	Express	6.142s (+18.9% 🔺)	7.342s (+12.3% 🔺)	0.000s (+Infinity% 🔺)	7.767s (+9.7% 🔺)	1.625s	8	1.06x
▲ Vercel	Next.js (Turbopack)	8.257s (+19.7% 🔺)	9.065s (+20.3% 🔺)	0.000s (+Infinity% 🔺)	10.142s (+18.0% 🔺)	1.886s	7	1.42x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	17/21
🐘 Postgres	Express	9/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Next.js (Turbopack)	🐘 Postgres	17/21
Nitro	🐘 Postgres	14/21

Column Definitions

• Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
• TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
• Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
• Wall Time: Total testbench time (trigger workflow + poll for result)
• Overhead: Testbench overhead (Wall Time - Workflow Time)
• Samples: Number of benchmark iterations run
• vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

• 💻 Local: In-memory filesystem world (local development)
• 🐘 Postgres: PostgreSQL database world (local development)
• ▲ Vercel: Vercel production/preview deployment
• 🌐 Turso: Community world (local development)
• 🌐 MongoDB: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Jazz: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Redis + BullMQ: Community world (local development)
• 🌐 Cloudflare: Community world (local development)
• 🌐 MySQL: Community world (local development)
• 🌐 Azure: Community world (local development)
• 🌐 NATS JetStream: Community world (local development)
• 🌐 Upstash: Community world (local development)
• 🌐 Platformatic: Community world (local development)

---

📋 View full workflow run

[VaguelySerious]

CI status (interim)

Two failures, both pre-existing on main — not introduced by this PR:

1. E2E Local Dev Tests (vite - stable) — failing tests basic step error preserves message and stack trace and cross-file step error preserves message and function names in stack both fail on the most recent main run (job 73444472541) with the same assertion. Unrelated to AI SDK changes.
2. Docs Preview Smoke Checks — Vercel API returning 403 invalidToken while polling for the preview deployment. Infra/credential issue, not code.

12 E2E Postgres jobs still pending; will check back when they complete.

[VaguelySerious]

CI status (final)

88 pass, 5 skipping, 5 still-running benchmarks, 4 failures — none caused by this PR.

Check	Status	Verdict
E2E Local Dev Tests (vite - stable)	fail	Same 2 tests (basic step error preserves message and stack trace, cross-file step error preserves message and function names in stack) fail on the latest main run (job 73444472541). Pre-existing.
E2E Windows Tests	fail (cancelled at 30m)	dev.test.ts > should rebuild on imported step dependency change timed out on hot-reload polling (Failed to trigger workflow "importedStepOnlyWorkflow": 500). Same 30m20s/30m24s cancellation pattern visible on PRs #1857 and #1854 — known Windows-job timeout flake, unrelated to AI SDK changes.
Docs Preview Smoke Checks	fail	Vercel API 403 invalidToken while polling for the preview deployment URL. Infra/credential issue, the deployment itself succeeded.
E2E Required Check	fail (3s)	Aggregator that reports failure when any of the above E2E jobs fail. No independent signal.

The 5 pending Benchmark * jobs are still in progress (>30 min in) and are independent of type/contract changes in @workflow/ai.

Marking the PR as ready for review when you take a look.

[karthikscale3]

Looks good. The updated implementation preserves the full AI SDK usage shape for DurableAgent totalUsage and adds targeted coverage for the ToolLoopAgent-alignment case.

[VaguelySerious]

Summary

DurableAgentStreamResult (the awaited return of agent.stream()) is missing totalUsage and finishReason. Both fields are already computed in the runtime and passed to the onFinish callback, so the omission from the result is asymmetric and diverges from the AI SDK's GenerateTextResult/StreamTextResult which expose them directly.

This adds them to the interface and to all three return sites (early-abort, paused-tools, and the final return), reusing the existing aggregateUsage(steps) helper.

See also vercel/ai#14786

Test plan

• New regression test in durable-agent-compat.test.ts asserts result.totalUsage and result.finishReason after a normal stream
• Existing 187 tests still pass (188 with the new one)
• Build passes (pnpm build in packages/ai)

🤖 Generated with Claude Code

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-astro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-express-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-fastify-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-hono-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nitro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nuxt-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-vite-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-docs	Ready	Preview, Comment, Open in v0	Jun 26, 2026 11:53pm
workflow-swc-playground	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-tarballs	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-web	Ready	Preview, Comment	Jun 26, 2026 11:53pm

[changeset-bot]

🦋 Changeset detected

Latest commit: 476187c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@workflow/ai	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1442	0	230	1672
✅ 💻 Local Development	1605	0	219	1824
✅ 📦 Local Production	1605	0	219	1824
✅ 🐘 Local Postgres	1593	0	231	1824
✅ 🪟 Windows	152	0	0	152
✅ 📋 Other	885	0	179	1064
Total	7282	0	1078	8360

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	125	0	27
✅ example	125	0	27
✅ express	125	0	27
✅ fastify	125	0	27
✅ hono	125	0	27
✅ nextjs-turbopack	149	0	3
✅ nextjs-webpack	149	0	3
✅ nitro	125	0	27
✅ nuxt	125	0	27
✅ sveltekit	144	0	8
✅ vite	125	0	27

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	126	0	26
✅ express-stable	126	0	26
✅ fastify-stable	126	0	26
✅ hono-stable	126	0	26
✅ nextjs-turbopack-canary	132	0	20
✅ nextjs-turbopack-stable	151	0	1
✅ nextjs-webpack-canary	132	0	20
✅ nextjs-webpack-stable	151	0	1
✅ nitro-stable	126	0	26
✅ nuxt-stable	126	0	26
✅ sveltekit-stable	145	0	7
✅ vite-stable	126	0	26

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	152	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	127	0	25
✅ e2e-local-dev-tanstack-start-	127	0	25
✅ e2e-local-postgres-nest-stable	126	0	26
✅ e2e-local-postgres-tanstack-start-	126	0	26
✅ e2e-local-prod-nest-stable	127	0	25
✅ e2e-local-prod-tanstack-start-	127	0	25
✅ e2e-vercel-prod-tanstack-start	125	0	27

---

📋 View full workflow run

[github-actions]

📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.043s (+23.1% 🔺)	1.005s (~)	0.962s	10	1.00x
💻 Local	Express	0.045s (-8.1% 🟢)	1.006s (~)	0.961s	10	1.05x
💻 Local	Next.js (Turbopack)	0.048s (-4.0%)	1.007s (~)	0.959s	10	1.12x
🐘 Postgres	Next.js (Turbopack)	0.058s (-50.6% 🟢)	1.012s (-3.9%)	0.954s	10	1.35x
🐘 Postgres	Express	0.059s (-6.5% 🟢)	1.011s (~)	0.952s	10	1.36x
🐘 Postgres	Nitro	0.066s (-6.9% 🟢)	1.013s (~)	0.947s	10	1.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.209s (-0.5%)	1.724s (+15.3% 🔺)	1.515s	10	1.00x
▲ Vercel	Next.js (Turbopack)	0.255s (-53.5% 🟢)	2.054s (+1.1%)	1.800s	10	1.22x
▲ Vercel	Nitro	0.257s (+30.0% 🔺)	1.832s (+7.3% 🔺)	1.575s	10	1.23x

🔍 Observability: Express | Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.076s (+0.9%)	2.008s (~)	0.932s	10	1.00x
💻 Local	Express	1.083s (~)	2.007s (~)	0.924s	10	1.01x
💻 Local	Next.js (Turbopack)	1.084s (~)	2.006s (~)	0.922s	10	1.01x
🐘 Postgres	Express	1.092s (~)	2.010s (~)	0.918s	10	1.01x
🐘 Postgres	Nitro	1.094s (-0.6%)	2.009s (~)	0.916s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.101s (+1.6%)	2.010s (~)	0.909s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.435s (+2.0%)	2.900s (+2.4%)	1.466s	10	1.00x
▲ Vercel	Nitro	1.523s (+10.2% 🔺)	3.036s (-2.3%)	1.513s	10	1.06x
▲ Vercel	Next.js (Turbopack)	2.444s (+13.8% 🔺)	4.123s (+16.1% 🔺)	1.679s	10	1.70x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.420s (~)	11.022s (~)	0.601s	3	1.00x
🐘 Postgres	Nitro	10.435s (-0.9%)	11.015s (~)	0.581s	3	1.00x
💻 Local	Next.js (Turbopack)	10.442s (~)	11.024s (~)	0.582s	3	1.00x
💻 Local	Express	10.451s (~)	11.023s (~)	0.572s	3	1.00x
🐘 Postgres	Express	10.457s (~)	11.021s (~)	0.564s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.540s (-1.6%)	11.020s (~)	0.480s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	12.664s (+7.0% 🔺)	14.760s (+11.3% 🔺)	2.096s	3	1.00x
▲ Vercel	Express	12.909s (+9.8% 🔺)	14.630s (+5.3% 🔺)	1.722s	3	1.02x
▲ Vercel	Next.js (Turbopack)	13.171s (+4.1%)	15.097s (+8.9% 🔺)	1.926s	2	1.04x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	13.547s (~)	14.027s (~)	0.480s	5	1.00x
🐘 Postgres	Nitro	13.569s (-1.1%)	14.021s (~)	0.452s	5	1.00x
🐘 Postgres	Express	13.571s (-0.8%)	14.019s (~)	0.449s	5	1.00x
🐘 Postgres	Next.js (Turbopack)	13.585s (~)	14.022s (~)	0.437s	5	1.00x
💻 Local	Express	13.596s (~)	14.028s (~)	0.432s	5	1.00x
💻 Local	Next.js (Turbopack)	13.655s (~)	14.027s (~)	0.372s	5	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	18.355s (-1.3%)	20.041s (-2.6%)	1.686s	4	1.00x
▲ Vercel	Express	18.872s (+10.6% 🔺)	20.504s (+8.3% 🔺)	1.631s	3	1.03x
▲ Vercel	Next.js (Turbopack)	19.242s (+5.4% 🔺)	21.587s (+6.9% 🔺)	2.345s	3	1.05x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.032s (+2.0%)	12.648s (+5.1% 🔺)	0.617s	8	1.00x
🐘 Postgres	Nitro	12.098s (-1.6%)	13.019s (~)	0.921s	7	1.01x
💻 Local	Express	12.158s (-1.6%)	13.024s (~)	0.866s	7	1.01x
🐘 Postgres	Next.js (Turbopack)	12.218s (-1.3%)	13.016s (~)	0.797s	7	1.02x
🐘 Postgres	Express	12.330s (+1.8%)	13.021s (+1.2%)	0.691s	7	1.02x
💻 Local	Next.js (Turbopack)	12.385s (~)	13.027s (~)	0.642s	7	1.03x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	22.509s (+26.2% 🔺)	24.128s (+23.8% 🔺)	1.619s	4	1.00x
▲ Vercel	Express	23.401s (+29.5% 🔺)	25.075s (+24.1% 🔺)	1.674s	4	1.04x
▲ Vercel	Next.js (Turbopack)	24.310s (+23.9% 🔺)	26.317s (+25.3% 🔺)	2.007s	4	1.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.163s (-1.3%)	2.008s (~)	0.845s	15	1.00x
🐘 Postgres	Nitro	1.168s (-2.8%)	2.007s (~)	0.839s	15	1.00x
🐘 Postgres	Next.js (Turbopack)	1.223s (-9.9% 🟢)	2.008s (-1.2%)	0.784s	15	1.05x
💻 Local	Nitro	1.384s (+6.8% 🔺)	2.006s (~)	0.622s	15	1.19x
💻 Local	Next.js (Turbopack)	1.393s (-0.6%)	2.006s (~)	0.613s	15	1.20x
💻 Local	Express	1.417s (~)	2.007s (~)	0.590s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.812s (+47.0% 🔺)	4.763s (+25.3% 🔺)	1.951s	7	1.00x
▲ Vercel	Nitro	3.188s (+45.2% 🔺)	4.695s (+29.3% 🔺)	1.506s	7	1.13x
▲ Vercel	Next.js (Turbopack)	3.872s (+15.0% 🔺)	5.654s (+17.6% 🔺)	1.783s	6	1.38x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.310s (-3.9%)	2.393s (-4.6%)	1.083s	13	1.00x
🐘 Postgres	Express	1.310s (+1.2%)	2.316s (-10.6% 🟢)	1.006s	13	1.00x
🐘 Postgres	Next.js (Turbopack)	1.329s (-5.4% 🟢)	3.011s (~)	1.682s	10	1.01x
💻 Local	Express	2.442s (-11.7% 🟢)	3.009s (~)	0.567s	10	1.86x
💻 Local	Nitro	2.509s (+4.1%)	3.009s (~)	0.500s	10	1.92x
💻 Local	Next.js (Turbopack)	2.519s (-3.4%)	3.109s (+3.3%)	0.590s	10	1.92x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.900s (+4.4%)	4.510s (+0.6%)	1.609s	7	1.00x
▲ Vercel	Nitro	3.058s (+22.0% 🔺)	4.827s (+31.1% 🔺)	1.769s	7	1.05x
▲ Vercel	Next.js (Turbopack)	5.219s (+48.9% 🔺)	7.116s (+52.2% 🔺)	1.897s	5	1.80x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.562s (-6.1% 🟢)	4.138s (-3.8%)	2.576s	8	1.00x
🐘 Postgres	Express	1.564s (-1.2%)	4.012s (-3.0%)	2.448s	8	1.00x
🐘 Postgres	Next.js (Turbopack)	2.921s (+2.3%)	5.848s (+9.3% 🔺)	2.927s	6	1.87x
💻 Local	Nitro	5.751s (+5.3% 🔺)	6.213s (+3.2%)	0.461s	5	3.68x
💻 Local	Express	6.057s (-3.8%)	6.815s (~)	0.759s	5	3.88x
💻 Local	Next.js (Turbopack)	6.652s (-10.2% 🟢)	7.767s (-8.8% 🟢)	1.115s	4	4.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.971s (+28.7% 🔺)	5.501s (+15.5% 🔺)	1.530s	6	1.00x
▲ Vercel	Nitro	4.357s (+54.4% 🔺)	6.158s (+30.1% 🔺)	1.800s	6	1.10x
▲ Vercel	Next.js (Turbopack)	5.269s (+4.0%)	7.268s (+11.7% 🔺)	1.999s	5	1.33x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.163s (-2.7%)	2.007s (~)	0.844s	15	1.00x
🐘 Postgres	Express	1.171s (-20.0% 🟢)	2.008s (-9.6% 🟢)	0.837s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.188s (-8.4% 🟢)	2.008s (-1.0%)	0.820s	15	1.02x
💻 Local	Nitro	1.383s (+16.8% 🔺)	2.007s (~)	0.623s	15	1.19x
💻 Local	Express	1.429s (-1.0%)	2.007s (~)	0.577s	15	1.23x
💻 Local	Next.js (Turbopack)	1.461s (-9.9% 🟢)	2.008s (-3.2%)	0.547s	15	1.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.691s (+32.5% 🔺)	4.319s (+25.5% 🔺)	1.629s	8	1.00x
▲ Vercel	Express	3.497s (+73.0% 🔺)	5.237s (+35.7% 🔺)	1.740s	6	1.30x
▲ Vercel	Next.js (Turbopack)	3.771s (+26.1% 🔺)	5.557s (+23.7% 🔺)	1.786s	6	1.40x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.296s (-8.4% 🟢)	3.009s (+8.2% 🔺)	1.712s	10	1.00x
🐘 Postgres	Express	1.301s (-1.9%)	2.593s (+11.9% 🔺)	1.292s	12	1.00x
🐘 Postgres	Nitro	1.327s (+0.9%)	2.317s (-7.7% 🟢)	0.989s	13	1.02x
💻 Local	Nitro	2.489s (+4.5%)	3.008s (~)	0.519s	10	1.92x
💻 Local	Next.js (Turbopack)	2.668s (+9.9% 🔺)	3.008s (-3.2%)	0.341s	10	2.06x
💻 Local	Express	2.673s (~)	3.100s (+6.2% 🔺)	0.427s	11	2.06x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.978s (+26.4% 🔺)	4.484s (+23.3% 🔺)	1.505s	7	1.00x
▲ Vercel	Express	3.425s (+57.5% 🔺)	5.201s (+35.4% 🔺)	1.776s	6	1.15x
▲ Vercel	Next.js (Turbopack)	4.353s (+24.5% 🔺)	6.479s (+32.7% 🔺)	2.126s	5	1.46x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.568s (-6.0% 🟢)	4.136s (-4.0%)	2.568s	8	1.00x
🐘 Postgres	Express	1.576s (~)	4.011s (-3.0%)	2.435s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	2.881s (+4.9%)	5.683s (+8.8% 🔺)	2.802s	6	1.84x
💻 Local	Next.js (Turbopack)	5.291s (-31.2% 🟢)	6.216s (-29.2% 🟢)	0.925s	5	3.37x
💻 Local	Nitro	6.030s (+11.0% 🔺)	7.018s (+9.4% 🔺)	0.988s	5	3.85x
💻 Local	Express	6.332s (+3.1%)	7.020s (+3.0%)	0.687s	5	4.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.900s (+34.8% 🔺)	5.580s (+15.3% 🔺)	1.680s	6	1.00x
▲ Vercel	Nitro	4.380s (+56.8% 🔺)	6.040s (+28.1% 🔺)	1.661s	6	1.12x
▲ Vercel	Next.js (Turbopack)	6.451s (+62.8% 🔺)	8.213s (+49.9% 🔺)	1.762s	4	1.65x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.523s (+1.8%)	1.023s (+1.7%)	0.500s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.534s (-14.5% 🟢)	1.007s (-6.3% 🟢)	0.472s	60	1.02x
💻 Local	Nitro	0.543s (+21.8% 🔺)	1.005s (~)	0.462s	60	1.04x
🐘 Postgres	Nitro	0.551s (-4.2%)	1.023s (~)	0.472s	59	1.05x
💻 Local	Express	0.559s (-2.1%)	1.005s (~)	0.446s	60	1.07x
💻 Local	Next.js (Turbopack)	0.612s (-6.7% 🟢)	1.022s (~)	0.410s	59	1.17x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.641s (+67.1% 🔺)	6.456s (+36.2% 🔺)	1.815s	10	1.00x
▲ Vercel	Express	4.768s (+85.7% 🔺)	6.430s (+60.0% 🔺)	1.662s	10	1.03x
▲ Vercel	Next.js (Turbopack)	5.565s (+44.9% 🔺)	7.357s (+35.7% 🔺)	1.792s	9	1.20x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.237s (-1.6%)	2.030s (~)	0.793s	45	1.00x
🐘 Postgres	Nitro	1.255s (-9.5% 🟢)	2.029s (+1.1%)	0.774s	45	1.01x
🐘 Postgres	Next.js (Turbopack)	1.272s (-26.0% 🟢)	2.008s (-13.8% 🟢)	0.736s	45	1.03x
💻 Local	Nitro	1.385s (+33.7% 🔺)	2.006s (+38.2% 🔺)	0.620s	45	1.12x
💻 Local	Express	1.414s (+1.2%)	2.006s (~)	0.592s	45	1.14x
💻 Local	Next.js (Turbopack)	1.467s (-3.8%)	2.006s (~)	0.539s	45	1.19x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.197s (+50.2% 🔺)	10.859s (+46.0% 🔺)	1.662s	9	1.00x
▲ Vercel	Express	9.934s (+43.9% 🔺)	11.416s (+30.7% 🔺)	1.482s	8	1.08x
▲ Vercel	Next.js (Turbopack)	11.607s (+36.5% 🔺)	13.869s (+35.5% 🔺)	2.262s	7	1.26x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.409s (-16.8% 🟢)	3.058s (-6.0% 🟢)	0.650s	40	1.00x
🐘 Postgres	Express	2.494s (+4.4%)	3.086s (+1.7%)	0.592s	39	1.04x
🐘 Postgres	Next.js (Turbopack)	2.555s (-17.2% 🟢)	3.008s (-16.5% 🟢)	0.453s	40	1.06x
💻 Local	Nitro	3.075s (+38.7% 🔺)	3.645s (+29.1% 🔺)	0.570s	33	1.28x
💻 Local	Express	3.095s (+1.6%)	3.645s (+1.4%)	0.550s	33	1.29x
💻 Local	Next.js (Turbopack)	3.315s (-0.6%)	4.042s (+0.8%)	0.727s	30	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	18.529s (+40.8% 🔺)	20.148s (+28.8% 🔺)	1.619s	6	1.00x
▲ Vercel	Nitro	20.114s (+50.4% 🔺)	21.738s (+44.4% 🔺)	1.623s	6	1.09x
▲ Vercel	Next.js (Turbopack)	24.421s (+27.0% 🔺)	26.387s (+27.2% 🔺)	1.965s	5	1.32x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.181s (-29.9% 🟢)	1.006s (-0.9%)	0.825s	60	1.00x
🐘 Postgres	Express	0.194s (-4.3%)	1.007s (~)	0.813s	60	1.07x
🐘 Postgres	Nitro	0.204s (-10.8% 🟢)	1.006s (~)	0.802s	60	1.13x
💻 Local	Nitro	0.445s (+18.3% 🔺)	1.004s (~)	0.559s	60	2.46x
💻 Local	Express	0.493s (+5.7% 🔺)	1.005s (~)	0.512s	60	2.72x
💻 Local	Next.js (Turbopack)	0.587s (-4.9%)	1.005s (~)	0.417s	60	3.24x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.562s (+45.2% 🔺)	3.076s (+24.7% 🔺)	1.514s	20	1.00x
▲ Vercel	Express	1.593s (+58.0% 🔺)	3.063s (+14.5% 🔺)	1.470s	20	1.02x
▲ Vercel	Next.js (Turbopack)	2.854s (+40.0% 🔺)	4.819s (+44.2% 🔺)	1.965s	13	1.83x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.284s (-47.0% 🟢)	1.006s (-11.2% 🟢)	0.722s	90	1.00x
🐘 Postgres	Express	0.297s (-3.1%)	1.006s (~)	0.709s	90	1.05x
🐘 Postgres	Nitro	0.329s (-7.5% 🟢)	1.007s (~)	0.678s	90	1.16x
💻 Local	Nitro	2.142s (+44.1% 🔺)	2.715s (+32.2% 🔺)	0.573s	34	7.54x
💻 Local	Express	2.215s (-2.5%)	2.797s (-2.0%)	0.581s	33	7.80x
💻 Local	Next.js (Turbopack)	2.645s (-5.3% 🟢)	3.182s (-4.8%)	0.537s	29	9.31x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.821s (+23.8% 🔺)	3.288s (+2.2%)	1.467s	28	1.00x
▲ Vercel	Nitro	2.117s (+62.5% 🔺)	3.936s (+47.2% 🔺)	1.819s	23	1.16x
▲ Vercel	Next.js (Turbopack)	3.520s (+38.3% 🔺)	5.325s (+41.6% 🔺)	1.805s	17	1.93x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.484s (-6.3% 🟢)	1.078s (+2.7%)	0.594s	112	1.00x
🐘 Postgres	Next.js (Turbopack)	0.507s (-42.2% 🟢)	3.059s (+21.0% 🔺)	2.552s	40	1.05x
🐘 Postgres	Nitro	0.536s (-3.4%)	1.042s (-6.0% 🟢)	0.506s	116	1.11x
💻 Local	Express	9.046s (-3.7%)	10.108s (-4.8%)	1.062s	12	18.67x
💻 Local	Nitro	9.214s (+23.9% 🔺)	10.197s (+23.0% 🔺)	0.983s	12	19.02x
💻 Local	Next.js (Turbopack)	9.879s (-7.5% 🟢)	10.695s (-8.3% 🟢)	0.816s	12	20.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.668s (+34.1% 🔺)	4.112s (+4.9%)	1.444s	30	1.00x
▲ Vercel	Nitro	2.668s (+46.7% 🔺)	4.242s (+17.1% 🔺)	1.574s	29	1.00x
▲ Vercel	Next.js (Turbopack)	4.857s (+29.6% 🔺)	6.914s (+32.5% 🔺)	2.056s	18	1.82x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.131s (-0.5%)	1.970s (~)	0.010s (+3.0%)	2.018s (~)	0.886s	10	1.00x
💻 Local	Express	1.145s (~)	2.004s (~)	0.010s (-5.5% 🟢)	2.018s (~)	0.873s	10	1.01x
🐘 Postgres	Express	1.146s (-0.8%)	2.000s (~)	0.001s (+33.3% 🔺)	2.010s (~)	0.864s	10	1.01x
🐘 Postgres	Nitro	1.151s (-2.1%)	1.998s (~)	0.001s (-8.3% 🟢)	2.010s (~)	0.860s	10	1.02x
💻 Local	Nitro	1.151s (+3.5%)	2.004s (~)	0.010s (-69.2% 🟢)	2.017s (-1.2%)	0.866s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.156s (-11.3% 🟢)	2.000s (~)	0.001s (-93.4% 🟢)	2.011s (-1.4%)	0.855s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.274s (+19.2% 🔺)	3.470s (+13.4% 🔺)	4.051s (+169.2% 🔺)	8.006s (+59.2% 🔺)	5.732s	10	1.00x
▲ Vercel	Express	2.296s (+18.3% 🔺)	3.216s (-4.9%)	3.994s (+164.2% 🔺)	7.662s (+42.3% 🔺)	5.366s	10	1.01x
▲ Vercel	Next.js (Turbopack)	4.036s (+20.6% 🔺)	4.384s (+20.3% 🔺)	3.119s (+124.5% 🔺)	9.016s (+42.1% 🔺)	4.979s	10	1.77x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.530s (-0.7%)	2.006s (~)	0.004s (-16.1% 🟢)	2.024s (~)	0.493s	30	1.00x
💻 Local	Nitro	1.533s (+8.6% 🔺)	2.009s (~)	0.012s (-37.3% 🟢)	2.023s (~)	0.491s	30	1.00x
💻 Local	Express	1.533s (-1.3%)	2.010s (~)	0.014s (-5.8% 🟢)	2.026s (~)	0.493s	30	1.00x
🐘 Postgres	Next.js (Turbopack)	1.573s (-20.2% 🟢)	2.009s (-16.0% 🟢)	0.005s (+32.4% 🔺)	2.026s (-16.2% 🟢)	0.454s	30	1.03x
💻 Local	Next.js (Turbopack)	1.578s (-1.8%)	1.972s (~)	0.014s (+3.5%)	2.027s (~)	0.448s	30	1.03x
🐘 Postgres	Nitro	1.618s (-0.9%)	2.000s (~)	0.005s (+1.3%)	2.030s (~)	0.411s	30	1.06x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.437s (+15.3% 🔺)	7.697s (+14.8% 🔺)	0.410s (+87.5% 🔺)	8.593s (+16.0% 🔺)	2.156s	7	1.00x
▲ Vercel	Express	6.851s (+19.0% 🔺)	8.021s (+9.0% 🔺)	0.538s (+111.5% 🔺)	8.977s (+10.6% 🔺)	2.126s	7	1.06x
▲ Vercel	Next.js (Turbopack)	11.230s (+20.8% 🔺)	12.363s (+22.7% 🔺)	0.212s (-20.7% 🟢)	13.650s (+21.4% 🔺)	2.420s	5	1.74x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.768s (+4.1%)	1.031s (~)	0.000s (+Infinity% 🔺)	1.064s (+1.0%)	0.297s	57	1.00x
🐘 Postgres	Nitro	0.817s (-1.8%)	1.082s (-1.7%)	0.000s (+194.5% 🔺)	1.101s (-1.7%)	0.284s	55	1.06x
🐘 Postgres	Next.js (Turbopack)	0.982s (-10.2% 🟢)	1.386s (-16.5% 🟢)	0.000s (+Infinity% 🔺)	1.394s (-17.1% 🟢)	0.412s	44	1.28x
💻 Local	Nitro	1.249s (+30.7% 🔺)	2.013s (+53.1% 🔺)	0.000s (-56.2% 🟢)	2.016s (+52.9% 🔺)	0.767s	30	1.63x
💻 Local	Express	1.264s (-5.2% 🟢)	2.014s (~)	0.000s (-47.8% 🟢)	2.017s (~)	0.753s	30	1.65x
💻 Local	Next.js (Turbopack)	1.396s (-4.3%)	1.980s (~)	0.000s (+200.0% 🔺)	2.016s (~)	0.620s	30	1.82x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.832s (+37.6% 🔺)	4.875s (+16.8% 🔺)	0.003s (+Infinity% 🔺)	5.348s (+15.3% 🔺)	1.516s	12	1.00x
▲ Vercel	Express	4.028s (+41.5% 🔺)	4.936s (+10.6% 🔺)	0.000s (-100.0% 🟢)	5.410s (+8.5% 🔺)	1.381s	12	1.05x
▲ Vercel	Next.js (Turbopack)	6.034s (+23.5% 🔺)	6.572s (+22.2% 🔺)	0.000s (+275.0% 🔺)	7.715s (+20.7% 🔺)	1.681s	8	1.57x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

fan-out fan-in 10 streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.679s (+2.1%)	2.332s (+3.6%)	0.000s (~)	2.342s (+2.9%)	0.662s	27	1.00x
🐘 Postgres	Nitro	1.947s (+11.8% 🔺)	2.495s (+7.0% 🔺)	0.000s (-100.0% 🟢)	2.518s (+7.4% 🔺)	0.571s	24	1.16x
🐘 Postgres	Next.js (Turbopack)	2.408s (-28.7% 🟢)	3.052s (-21.3% 🟢)	0.000s (NaN%)	3.069s (-21.8% 🟢)	0.661s	20	1.43x
💻 Local	Nitro	3.378s (+54.7% 🔺)	3.899s (+49.6% 🔺)	0.001s (-25.0% 🟢)	3.906s (+49.6% 🔺)	0.528s	16	2.01x
💻 Local	Express	3.384s (+0.7%)	4.021s (+3.1%)	0.001s (-43.1% 🟢)	4.029s (+3.1%)	0.645s	15	2.02x
💻 Local	Next.js (Turbopack)	3.838s (-5.1% 🟢)	4.322s (-3.8%)	0.001s (+0.5%)	4.368s (-3.7%)	0.530s	15	2.29x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.799s (+6.0% 🔺)	6.896s (+12.8% 🔺)	0.000s (NaN%)	7.380s (+3.3%)	1.582s	9	1.00x
▲ Vercel	Express	6.142s (+18.9% 🔺)	7.342s (+12.3% 🔺)	0.000s (+Infinity% 🔺)	7.767s (+9.7% 🔺)	1.625s	8	1.06x
▲ Vercel	Next.js (Turbopack)	8.257s (+19.7% 🔺)	9.065s (+20.3% 🔺)	0.000s (+Infinity% 🔺)	10.142s (+18.0% 🔺)	1.886s	7	1.42x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	17/21
🐘 Postgres	Express	9/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Next.js (Turbopack)	🐘 Postgres	17/21
Nitro	🐘 Postgres	14/21

Column Definitions

• Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
• TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
• Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
• Wall Time: Total testbench time (trigger workflow + poll for result)
• Overhead: Testbench overhead (Wall Time - Workflow Time)
• Samples: Number of benchmark iterations run
• vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

• 💻 Local: In-memory filesystem world (local development)
• 🐘 Postgres: PostgreSQL database world (local development)
• ▲ Vercel: Vercel production/preview deployment
• 🌐 Turso: Community world (local development)
• 🌐 MongoDB: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Jazz: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Redis + BullMQ: Community world (local development)
• 🌐 Cloudflare: Community world (local development)
• 🌐 MySQL: Community world (local development)
• 🌐 Azure: Community world (local development)
• 🌐 NATS JetStream: Community world (local development)
• 🌐 Upstash: Community world (local development)
• 🌐 Platformatic: Community world (local development)

---

📋 View full workflow run

[VaguelySerious]

CI status (interim)

Two failures, both pre-existing on main — not introduced by this PR:

1. E2E Local Dev Tests (vite - stable) — failing tests basic step error preserves message and stack trace and cross-file step error preserves message and function names in stack both fail on the most recent main run (job 73444472541) with the same assertion. Unrelated to AI SDK changes.
2. Docs Preview Smoke Checks — Vercel API returning 403 invalidToken while polling for the preview deployment. Infra/credential issue, not code.

12 E2E Postgres jobs still pending; will check back when they complete.

[VaguelySerious]

CI status (final)

88 pass, 5 skipping, 5 still-running benchmarks, 4 failures — none caused by this PR.

Check	Status	Verdict
E2E Local Dev Tests (vite - stable)	fail	Same 2 tests (basic step error preserves message and stack trace, cross-file step error preserves message and function names in stack) fail on the latest main run (job 73444472541). Pre-existing.
E2E Windows Tests	fail (cancelled at 30m)	dev.test.ts > should rebuild on imported step dependency change timed out on hot-reload polling (Failed to trigger workflow "importedStepOnlyWorkflow": 500). Same 30m20s/30m24s cancellation pattern visible on PRs #1857 and #1854 — known Windows-job timeout flake, unrelated to AI SDK changes.
Docs Preview Smoke Checks	fail	Vercel API 403 invalidToken while polling for the preview deployment URL. Infra/credential issue, the deployment itself succeeded.
E2E Required Check	fail (3s)	Aggregator that reports failure when any of the above E2E jobs fail. No independent signal.

The 5 pending Benchmark * jobs are still in progress (>30 min in) and are independent of type/contract changes in @workflow/ai.

Marking the PR as ready for review when you take a look.

[karthikscale3]

Looks good. The updated implementation preserves the full AI SDK usage shape for DurableAgent totalUsage and adds targeted coverage for the ToolLoopAgent-alignment case.

[VaguelySerious]

Summary

DurableAgentStreamResult (the awaited return of agent.stream()) is missing totalUsage and finishReason. Both fields are already computed in the runtime and passed to the onFinish callback, so the omission from the result is asymmetric and diverges from the AI SDK's GenerateTextResult/StreamTextResult which expose them directly.

This adds them to the interface and to all three return sites (early-abort, paused-tools, and the final return), reusing the existing aggregateUsage(steps) helper.

See also vercel/ai#14786

Test plan

• New regression test in durable-agent-compat.test.ts asserts result.totalUsage and result.finishReason after a normal stream
• Existing 187 tests still pass (188 with the new one)
• Build passes (pnpm build in packages/ai)

🤖 Generated with Claude Code

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-astro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-express-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-fastify-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-hono-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nitro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nuxt-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-vite-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-docs	Ready	Preview, Comment, Open in v0	Jun 26, 2026 11:53pm
workflow-swc-playground	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-tarballs	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-web	Ready	Preview, Comment	Jun 26, 2026 11:53pm

[changeset-bot]

🦋 Changeset detected

Latest commit: 476187c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@workflow/ai	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1442	0	230	1672
✅ 💻 Local Development	1605	0	219	1824
✅ 📦 Local Production	1605	0	219	1824
✅ 🐘 Local Postgres	1593	0	231	1824
✅ 🪟 Windows	152	0	0	152
✅ 📋 Other	885	0	179	1064
Total	7282	0	1078	8360

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	125	0	27
✅ example	125	0	27
✅ express	125	0	27
✅ fastify	125	0	27
✅ hono	125	0	27
✅ nextjs-turbopack	149	0	3
✅ nextjs-webpack	149	0	3
✅ nitro	125	0	27
✅ nuxt	125	0	27
✅ sveltekit	144	0	8
✅ vite	125	0	27

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	126	0	26
✅ express-stable	126	0	26
✅ fastify-stable	126	0	26
✅ hono-stable	126	0	26
✅ nextjs-turbopack-canary	132	0	20
✅ nextjs-turbopack-stable	151	0	1
✅ nextjs-webpack-canary	132	0	20
✅ nextjs-webpack-stable	151	0	1
✅ nitro-stable	126	0	26
✅ nuxt-stable	126	0	26
✅ sveltekit-stable	145	0	7
✅ vite-stable	126	0	26

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	152	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	127	0	25
✅ e2e-local-dev-tanstack-start-	127	0	25
✅ e2e-local-postgres-nest-stable	126	0	26
✅ e2e-local-postgres-tanstack-start-	126	0	26
✅ e2e-local-prod-nest-stable	127	0	25
✅ e2e-local-prod-tanstack-start-	127	0	25
✅ e2e-vercel-prod-tanstack-start	125	0	27

---

📋 View full workflow run

[github-actions]

📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.043s (+23.1% 🔺)	1.005s (~)	0.962s	10	1.00x
💻 Local	Express	0.045s (-8.1% 🟢)	1.006s (~)	0.961s	10	1.05x
💻 Local	Next.js (Turbopack)	0.048s (-4.0%)	1.007s (~)	0.959s	10	1.12x
🐘 Postgres	Next.js (Turbopack)	0.058s (-50.6% 🟢)	1.012s (-3.9%)	0.954s	10	1.35x
🐘 Postgres	Express	0.059s (-6.5% 🟢)	1.011s (~)	0.952s	10	1.36x
🐘 Postgres	Nitro	0.066s (-6.9% 🟢)	1.013s (~)	0.947s	10	1.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.209s (-0.5%)	1.724s (+15.3% 🔺)	1.515s	10	1.00x
▲ Vercel	Next.js (Turbopack)	0.255s (-53.5% 🟢)	2.054s (+1.1%)	1.800s	10	1.22x
▲ Vercel	Nitro	0.257s (+30.0% 🔺)	1.832s (+7.3% 🔺)	1.575s	10	1.23x

🔍 Observability: Express | Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.076s (+0.9%)	2.008s (~)	0.932s	10	1.00x
💻 Local	Express	1.083s (~)	2.007s (~)	0.924s	10	1.01x
💻 Local	Next.js (Turbopack)	1.084s (~)	2.006s (~)	0.922s	10	1.01x
🐘 Postgres	Express	1.092s (~)	2.010s (~)	0.918s	10	1.01x
🐘 Postgres	Nitro	1.094s (-0.6%)	2.009s (~)	0.916s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.101s (+1.6%)	2.010s (~)	0.909s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.435s (+2.0%)	2.900s (+2.4%)	1.466s	10	1.00x
▲ Vercel	Nitro	1.523s (+10.2% 🔺)	3.036s (-2.3%)	1.513s	10	1.06x
▲ Vercel	Next.js (Turbopack)	2.444s (+13.8% 🔺)	4.123s (+16.1% 🔺)	1.679s	10	1.70x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.420s (~)	11.022s (~)	0.601s	3	1.00x
🐘 Postgres	Nitro	10.435s (-0.9%)	11.015s (~)	0.581s	3	1.00x
💻 Local	Next.js (Turbopack)	10.442s (~)	11.024s (~)	0.582s	3	1.00x
💻 Local	Express	10.451s (~)	11.023s (~)	0.572s	3	1.00x
🐘 Postgres	Express	10.457s (~)	11.021s (~)	0.564s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.540s (-1.6%)	11.020s (~)	0.480s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	12.664s (+7.0% 🔺)	14.760s (+11.3% 🔺)	2.096s	3	1.00x
▲ Vercel	Express	12.909s (+9.8% 🔺)	14.630s (+5.3% 🔺)	1.722s	3	1.02x
▲ Vercel	Next.js (Turbopack)	13.171s (+4.1%)	15.097s (+8.9% 🔺)	1.926s	2	1.04x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	13.547s (~)	14.027s (~)	0.480s	5	1.00x
🐘 Postgres	Nitro	13.569s (-1.1%)	14.021s (~)	0.452s	5	1.00x
🐘 Postgres	Express	13.571s (-0.8%)	14.019s (~)	0.449s	5	1.00x
🐘 Postgres	Next.js (Turbopack)	13.585s (~)	14.022s (~)	0.437s	5	1.00x
💻 Local	Express	13.596s (~)	14.028s (~)	0.432s	5	1.00x
💻 Local	Next.js (Turbopack)	13.655s (~)	14.027s (~)	0.372s	5	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	18.355s (-1.3%)	20.041s (-2.6%)	1.686s	4	1.00x
▲ Vercel	Express	18.872s (+10.6% 🔺)	20.504s (+8.3% 🔺)	1.631s	3	1.03x
▲ Vercel	Next.js (Turbopack)	19.242s (+5.4% 🔺)	21.587s (+6.9% 🔺)	2.345s	3	1.05x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.032s (+2.0%)	12.648s (+5.1% 🔺)	0.617s	8	1.00x
🐘 Postgres	Nitro	12.098s (-1.6%)	13.019s (~)	0.921s	7	1.01x
💻 Local	Express	12.158s (-1.6%)	13.024s (~)	0.866s	7	1.01x
🐘 Postgres	Next.js (Turbopack)	12.218s (-1.3%)	13.016s (~)	0.797s	7	1.02x
🐘 Postgres	Express	12.330s (+1.8%)	13.021s (+1.2%)	0.691s	7	1.02x
💻 Local	Next.js (Turbopack)	12.385s (~)	13.027s (~)	0.642s	7	1.03x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	22.509s (+26.2% 🔺)	24.128s (+23.8% 🔺)	1.619s	4	1.00x
▲ Vercel	Express	23.401s (+29.5% 🔺)	25.075s (+24.1% 🔺)	1.674s	4	1.04x
▲ Vercel	Next.js (Turbopack)	24.310s (+23.9% 🔺)	26.317s (+25.3% 🔺)	2.007s	4	1.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.163s (-1.3%)	2.008s (~)	0.845s	15	1.00x
🐘 Postgres	Nitro	1.168s (-2.8%)	2.007s (~)	0.839s	15	1.00x
🐘 Postgres	Next.js (Turbopack)	1.223s (-9.9% 🟢)	2.008s (-1.2%)	0.784s	15	1.05x
💻 Local	Nitro	1.384s (+6.8% 🔺)	2.006s (~)	0.622s	15	1.19x
💻 Local	Next.js (Turbopack)	1.393s (-0.6%)	2.006s (~)	0.613s	15	1.20x
💻 Local	Express	1.417s (~)	2.007s (~)	0.590s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.812s (+47.0% 🔺)	4.763s (+25.3% 🔺)	1.951s	7	1.00x
▲ Vercel	Nitro	3.188s (+45.2% 🔺)	4.695s (+29.3% 🔺)	1.506s	7	1.13x
▲ Vercel	Next.js (Turbopack)	3.872s (+15.0% 🔺)	5.654s (+17.6% 🔺)	1.783s	6	1.38x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.310s (-3.9%)	2.393s (-4.6%)	1.083s	13	1.00x
🐘 Postgres	Express	1.310s (+1.2%)	2.316s (-10.6% 🟢)	1.006s	13	1.00x
🐘 Postgres	Next.js (Turbopack)	1.329s (-5.4% 🟢)	3.011s (~)	1.682s	10	1.01x
💻 Local	Express	2.442s (-11.7% 🟢)	3.009s (~)	0.567s	10	1.86x
💻 Local	Nitro	2.509s (+4.1%)	3.009s (~)	0.500s	10	1.92x
💻 Local	Next.js (Turbopack)	2.519s (-3.4%)	3.109s (+3.3%)	0.590s	10	1.92x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.900s (+4.4%)	4.510s (+0.6%)	1.609s	7	1.00x
▲ Vercel	Nitro	3.058s (+22.0% 🔺)	4.827s (+31.1% 🔺)	1.769s	7	1.05x
▲ Vercel	Next.js (Turbopack)	5.219s (+48.9% 🔺)	7.116s (+52.2% 🔺)	1.897s	5	1.80x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.562s (-6.1% 🟢)	4.138s (-3.8%)	2.576s	8	1.00x
🐘 Postgres	Express	1.564s (-1.2%)	4.012s (-3.0%)	2.448s	8	1.00x
🐘 Postgres	Next.js (Turbopack)	2.921s (+2.3%)	5.848s (+9.3% 🔺)	2.927s	6	1.87x
💻 Local	Nitro	5.751s (+5.3% 🔺)	6.213s (+3.2%)	0.461s	5	3.68x
💻 Local	Express	6.057s (-3.8%)	6.815s (~)	0.759s	5	3.88x
💻 Local	Next.js (Turbopack)	6.652s (-10.2% 🟢)	7.767s (-8.8% 🟢)	1.115s	4	4.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.971s (+28.7% 🔺)	5.501s (+15.5% 🔺)	1.530s	6	1.00x
▲ Vercel	Nitro	4.357s (+54.4% 🔺)	6.158s (+30.1% 🔺)	1.800s	6	1.10x
▲ Vercel	Next.js (Turbopack)	5.269s (+4.0%)	7.268s (+11.7% 🔺)	1.999s	5	1.33x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.163s (-2.7%)	2.007s (~)	0.844s	15	1.00x
🐘 Postgres	Express	1.171s (-20.0% 🟢)	2.008s (-9.6% 🟢)	0.837s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.188s (-8.4% 🟢)	2.008s (-1.0%)	0.820s	15	1.02x
💻 Local	Nitro	1.383s (+16.8% 🔺)	2.007s (~)	0.623s	15	1.19x
💻 Local	Express	1.429s (-1.0%)	2.007s (~)	0.577s	15	1.23x
💻 Local	Next.js (Turbopack)	1.461s (-9.9% 🟢)	2.008s (-3.2%)	0.547s	15	1.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.691s (+32.5% 🔺)	4.319s (+25.5% 🔺)	1.629s	8	1.00x
▲ Vercel	Express	3.497s (+73.0% 🔺)	5.237s (+35.7% 🔺)	1.740s	6	1.30x
▲ Vercel	Next.js (Turbopack)	3.771s (+26.1% 🔺)	5.557s (+23.7% 🔺)	1.786s	6	1.40x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.296s (-8.4% 🟢)	3.009s (+8.2% 🔺)	1.712s	10	1.00x
🐘 Postgres	Express	1.301s (-1.9%)	2.593s (+11.9% 🔺)	1.292s	12	1.00x
🐘 Postgres	Nitro	1.327s (+0.9%)	2.317s (-7.7% 🟢)	0.989s	13	1.02x
💻 Local	Nitro	2.489s (+4.5%)	3.008s (~)	0.519s	10	1.92x
💻 Local	Next.js (Turbopack)	2.668s (+9.9% 🔺)	3.008s (-3.2%)	0.341s	10	2.06x
💻 Local	Express	2.673s (~)	3.100s (+6.2% 🔺)	0.427s	11	2.06x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.978s (+26.4% 🔺)	4.484s (+23.3% 🔺)	1.505s	7	1.00x
▲ Vercel	Express	3.425s (+57.5% 🔺)	5.201s (+35.4% 🔺)	1.776s	6	1.15x
▲ Vercel	Next.js (Turbopack)	4.353s (+24.5% 🔺)	6.479s (+32.7% 🔺)	2.126s	5	1.46x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.568s (-6.0% 🟢)	4.136s (-4.0%)	2.568s	8	1.00x
🐘 Postgres	Express	1.576s (~)	4.011s (-3.0%)	2.435s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	2.881s (+4.9%)	5.683s (+8.8% 🔺)	2.802s	6	1.84x
💻 Local	Next.js (Turbopack)	5.291s (-31.2% 🟢)	6.216s (-29.2% 🟢)	0.925s	5	3.37x
💻 Local	Nitro	6.030s (+11.0% 🔺)	7.018s (+9.4% 🔺)	0.988s	5	3.85x
💻 Local	Express	6.332s (+3.1%)	7.020s (+3.0%)	0.687s	5	4.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.900s (+34.8% 🔺)	5.580s (+15.3% 🔺)	1.680s	6	1.00x
▲ Vercel	Nitro	4.380s (+56.8% 🔺)	6.040s (+28.1% 🔺)	1.661s	6	1.12x
▲ Vercel	Next.js (Turbopack)	6.451s (+62.8% 🔺)	8.213s (+49.9% 🔺)	1.762s	4	1.65x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.523s (+1.8%)	1.023s (+1.7%)	0.500s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.534s (-14.5% 🟢)	1.007s (-6.3% 🟢)	0.472s	60	1.02x
💻 Local	Nitro	0.543s (+21.8% 🔺)	1.005s (~)	0.462s	60	1.04x
🐘 Postgres	Nitro	0.551s (-4.2%)	1.023s (~)	0.472s	59	1.05x
💻 Local	Express	0.559s (-2.1%)	1.005s (~)	0.446s	60	1.07x
💻 Local	Next.js (Turbopack)	0.612s (-6.7% 🟢)	1.022s (~)	0.410s	59	1.17x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.641s (+67.1% 🔺)	6.456s (+36.2% 🔺)	1.815s	10	1.00x
▲ Vercel	Express	4.768s (+85.7% 🔺)	6.430s (+60.0% 🔺)	1.662s	10	1.03x
▲ Vercel	Next.js (Turbopack)	5.565s (+44.9% 🔺)	7.357s (+35.7% 🔺)	1.792s	9	1.20x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.237s (-1.6%)	2.030s (~)	0.793s	45	1.00x
🐘 Postgres	Nitro	1.255s (-9.5% 🟢)	2.029s (+1.1%)	0.774s	45	1.01x
🐘 Postgres	Next.js (Turbopack)	1.272s (-26.0% 🟢)	2.008s (-13.8% 🟢)	0.736s	45	1.03x
💻 Local	Nitro	1.385s (+33.7% 🔺)	2.006s (+38.2% 🔺)	0.620s	45	1.12x
💻 Local	Express	1.414s (+1.2%)	2.006s (~)	0.592s	45	1.14x
💻 Local	Next.js (Turbopack)	1.467s (-3.8%)	2.006s (~)	0.539s	45	1.19x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.197s (+50.2% 🔺)	10.859s (+46.0% 🔺)	1.662s	9	1.00x
▲ Vercel	Express	9.934s (+43.9% 🔺)	11.416s (+30.7% 🔺)	1.482s	8	1.08x
▲ Vercel	Next.js (Turbopack)	11.607s (+36.5% 🔺)	13.869s (+35.5% 🔺)	2.262s	7	1.26x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.409s (-16.8% 🟢)	3.058s (-6.0% 🟢)	0.650s	40	1.00x
🐘 Postgres	Express	2.494s (+4.4%)	3.086s (+1.7%)	0.592s	39	1.04x
🐘 Postgres	Next.js (Turbopack)	2.555s (-17.2% 🟢)	3.008s (-16.5% 🟢)	0.453s	40	1.06x
💻 Local	Nitro	3.075s (+38.7% 🔺)	3.645s (+29.1% 🔺)	0.570s	33	1.28x
💻 Local	Express	3.095s (+1.6%)	3.645s (+1.4%)	0.550s	33	1.29x
💻 Local	Next.js (Turbopack)	3.315s (-0.6%)	4.042s (+0.8%)	0.727s	30	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	18.529s (+40.8% 🔺)	20.148s (+28.8% 🔺)	1.619s	6	1.00x
▲ Vercel	Nitro	20.114s (+50.4% 🔺)	21.738s (+44.4% 🔺)	1.623s	6	1.09x
▲ Vercel	Next.js (Turbopack)	24.421s (+27.0% 🔺)	26.387s (+27.2% 🔺)	1.965s	5	1.32x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.181s (-29.9% 🟢)	1.006s (-0.9%)	0.825s	60	1.00x
🐘 Postgres	Express	0.194s (-4.3%)	1.007s (~)	0.813s	60	1.07x
🐘 Postgres	Nitro	0.204s (-10.8% 🟢)	1.006s (~)	0.802s	60	1.13x
💻 Local	Nitro	0.445s (+18.3% 🔺)	1.004s (~)	0.559s	60	2.46x
💻 Local	Express	0.493s (+5.7% 🔺)	1.005s (~)	0.512s	60	2.72x
💻 Local	Next.js (Turbopack)	0.587s (-4.9%)	1.005s (~)	0.417s	60	3.24x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.562s (+45.2% 🔺)	3.076s (+24.7% 🔺)	1.514s	20	1.00x
▲ Vercel	Express	1.593s (+58.0% 🔺)	3.063s (+14.5% 🔺)	1.470s	20	1.02x
▲ Vercel	Next.js (Turbopack)	2.854s (+40.0% 🔺)	4.819s (+44.2% 🔺)	1.965s	13	1.83x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.284s (-47.0% 🟢)	1.006s (-11.2% 🟢)	0.722s	90	1.00x
🐘 Postgres	Express	0.297s (-3.1%)	1.006s (~)	0.709s	90	1.05x
🐘 Postgres	Nitro	0.329s (-7.5% 🟢)	1.007s (~)	0.678s	90	1.16x
💻 Local	Nitro	2.142s (+44.1% 🔺)	2.715s (+32.2% 🔺)	0.573s	34	7.54x
💻 Local	Express	2.215s (-2.5%)	2.797s (-2.0%)	0.581s	33	7.80x
💻 Local	Next.js (Turbopack)	2.645s (-5.3% 🟢)	3.182s (-4.8%)	0.537s	29	9.31x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.821s (+23.8% 🔺)	3.288s (+2.2%)	1.467s	28	1.00x
▲ Vercel	Nitro	2.117s (+62.5% 🔺)	3.936s (+47.2% 🔺)	1.819s	23	1.16x
▲ Vercel	Next.js (Turbopack)	3.520s (+38.3% 🔺)	5.325s (+41.6% 🔺)	1.805s	17	1.93x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.484s (-6.3% 🟢)	1.078s (+2.7%)	0.594s	112	1.00x
🐘 Postgres	Next.js (Turbopack)	0.507s (-42.2% 🟢)	3.059s (+21.0% 🔺)	2.552s	40	1.05x
🐘 Postgres	Nitro	0.536s (-3.4%)	1.042s (-6.0% 🟢)	0.506s	116	1.11x
💻 Local	Express	9.046s (-3.7%)	10.108s (-4.8%)	1.062s	12	18.67x
💻 Local	Nitro	9.214s (+23.9% 🔺)	10.197s (+23.0% 🔺)	0.983s	12	19.02x
💻 Local	Next.js (Turbopack)	9.879s (-7.5% 🟢)	10.695s (-8.3% 🟢)	0.816s	12	20.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.668s (+34.1% 🔺)	4.112s (+4.9%)	1.444s	30	1.00x
▲ Vercel	Nitro	2.668s (+46.7% 🔺)	4.242s (+17.1% 🔺)	1.574s	29	1.00x
▲ Vercel	Next.js (Turbopack)	4.857s (+29.6% 🔺)	6.914s (+32.5% 🔺)	2.056s	18	1.82x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.131s (-0.5%)	1.970s (~)	0.010s (+3.0%)	2.018s (~)	0.886s	10	1.00x
💻 Local	Express	1.145s (~)	2.004s (~)	0.010s (-5.5% 🟢)	2.018s (~)	0.873s	10	1.01x
🐘 Postgres	Express	1.146s (-0.8%)	2.000s (~)	0.001s (+33.3% 🔺)	2.010s (~)	0.864s	10	1.01x
🐘 Postgres	Nitro	1.151s (-2.1%)	1.998s (~)	0.001s (-8.3% 🟢)	2.010s (~)	0.860s	10	1.02x
💻 Local	Nitro	1.151s (+3.5%)	2.004s (~)	0.010s (-69.2% 🟢)	2.017s (-1.2%)	0.866s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.156s (-11.3% 🟢)	2.000s (~)	0.001s (-93.4% 🟢)	2.011s (-1.4%)	0.855s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.274s (+19.2% 🔺)	3.470s (+13.4% 🔺)	4.051s (+169.2% 🔺)	8.006s (+59.2% 🔺)	5.732s	10	1.00x
▲ Vercel	Express	2.296s (+18.3% 🔺)	3.216s (-4.9%)	3.994s (+164.2% 🔺)	7.662s (+42.3% 🔺)	5.366s	10	1.01x
▲ Vercel	Next.js (Turbopack)	4.036s (+20.6% 🔺)	4.384s (+20.3% 🔺)	3.119s (+124.5% 🔺)	9.016s (+42.1% 🔺)	4.979s	10	1.77x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.530s (-0.7%)	2.006s (~)	0.004s (-16.1% 🟢)	2.024s (~)	0.493s	30	1.00x
💻 Local	Nitro	1.533s (+8.6% 🔺)	2.009s (~)	0.012s (-37.3% 🟢)	2.023s (~)	0.491s	30	1.00x
💻 Local	Express	1.533s (-1.3%)	2.010s (~)	0.014s (-5.8% 🟢)	2.026s (~)	0.493s	30	1.00x
🐘 Postgres	Next.js (Turbopack)	1.573s (-20.2% 🟢)	2.009s (-16.0% 🟢)	0.005s (+32.4% 🔺)	2.026s (-16.2% 🟢)	0.454s	30	1.03x
💻 Local	Next.js (Turbopack)	1.578s (-1.8%)	1.972s (~)	0.014s (+3.5%)	2.027s (~)	0.448s	30	1.03x
🐘 Postgres	Nitro	1.618s (-0.9%)	2.000s (~)	0.005s (+1.3%)	2.030s (~)	0.411s	30	1.06x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.437s (+15.3% 🔺)	7.697s (+14.8% 🔺)	0.410s (+87.5% 🔺)	8.593s (+16.0% 🔺)	2.156s	7	1.00x
▲ Vercel	Express	6.851s (+19.0% 🔺)	8.021s (+9.0% 🔺)	0.538s (+111.5% 🔺)	8.977s (+10.6% 🔺)	2.126s	7	1.06x
▲ Vercel	Next.js (Turbopack)	11.230s (+20.8% 🔺)	12.363s (+22.7% 🔺)	0.212s (-20.7% 🟢)	13.650s (+21.4% 🔺)	2.420s	5	1.74x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.768s (+4.1%)	1.031s (~)	0.000s (+Infinity% 🔺)	1.064s (+1.0%)	0.297s	57	1.00x
🐘 Postgres	Nitro	0.817s (-1.8%)	1.082s (-1.7%)	0.000s (+194.5% 🔺)	1.101s (-1.7%)	0.284s	55	1.06x
🐘 Postgres	Next.js (Turbopack)	0.982s (-10.2% 🟢)	1.386s (-16.5% 🟢)	0.000s (+Infinity% 🔺)	1.394s (-17.1% 🟢)	0.412s	44	1.28x
💻 Local	Nitro	1.249s (+30.7% 🔺)	2.013s (+53.1% 🔺)	0.000s (-56.2% 🟢)	2.016s (+52.9% 🔺)	0.767s	30	1.63x
💻 Local	Express	1.264s (-5.2% 🟢)	2.014s (~)	0.000s (-47.8% 🟢)	2.017s (~)	0.753s	30	1.65x
💻 Local	Next.js (Turbopack)	1.396s (-4.3%)	1.980s (~)	0.000s (+200.0% 🔺)	2.016s (~)	0.620s	30	1.82x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.832s (+37.6% 🔺)	4.875s (+16.8% 🔺)	0.003s (+Infinity% 🔺)	5.348s (+15.3% 🔺)	1.516s	12	1.00x
▲ Vercel	Express	4.028s (+41.5% 🔺)	4.936s (+10.6% 🔺)	0.000s (-100.0% 🟢)	5.410s (+8.5% 🔺)	1.381s	12	1.05x
▲ Vercel	Next.js (Turbopack)	6.034s (+23.5% 🔺)	6.572s (+22.2% 🔺)	0.000s (+275.0% 🔺)	7.715s (+20.7% 🔺)	1.681s	8	1.57x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

fan-out fan-in 10 streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.679s (+2.1%)	2.332s (+3.6%)	0.000s (~)	2.342s (+2.9%)	0.662s	27	1.00x
🐘 Postgres	Nitro	1.947s (+11.8% 🔺)	2.495s (+7.0% 🔺)	0.000s (-100.0% 🟢)	2.518s (+7.4% 🔺)	0.571s	24	1.16x
🐘 Postgres	Next.js (Turbopack)	2.408s (-28.7% 🟢)	3.052s (-21.3% 🟢)	0.000s (NaN%)	3.069s (-21.8% 🟢)	0.661s	20	1.43x
💻 Local	Nitro	3.378s (+54.7% 🔺)	3.899s (+49.6% 🔺)	0.001s (-25.0% 🟢)	3.906s (+49.6% 🔺)	0.528s	16	2.01x
💻 Local	Express	3.384s (+0.7%)	4.021s (+3.1%)	0.001s (-43.1% 🟢)	4.029s (+3.1%)	0.645s	15	2.02x
💻 Local	Next.js (Turbopack)	3.838s (-5.1% 🟢)	4.322s (-3.8%)	0.001s (+0.5%)	4.368s (-3.7%)	0.530s	15	2.29x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.799s (+6.0% 🔺)	6.896s (+12.8% 🔺)	0.000s (NaN%)	7.380s (+3.3%)	1.582s	9	1.00x
▲ Vercel	Express	6.142s (+18.9% 🔺)	7.342s (+12.3% 🔺)	0.000s (+Infinity% 🔺)	7.767s (+9.7% 🔺)	1.625s	8	1.06x
▲ Vercel	Next.js (Turbopack)	8.257s (+19.7% 🔺)	9.065s (+20.3% 🔺)	0.000s (+Infinity% 🔺)	10.142s (+18.0% 🔺)	1.886s	7	1.42x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	17/21
🐘 Postgres	Express	9/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Next.js (Turbopack)	🐘 Postgres	17/21
Nitro	🐘 Postgres	14/21

Column Definitions

• Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
• TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
• Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
• Wall Time: Total testbench time (trigger workflow + poll for result)
• Overhead: Testbench overhead (Wall Time - Workflow Time)
• Samples: Number of benchmark iterations run
• vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

• 💻 Local: In-memory filesystem world (local development)
• 🐘 Postgres: PostgreSQL database world (local development)
• ▲ Vercel: Vercel production/preview deployment
• 🌐 Turso: Community world (local development)
• 🌐 MongoDB: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Jazz: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Redis + BullMQ: Community world (local development)
• 🌐 Cloudflare: Community world (local development)
• 🌐 MySQL: Community world (local development)
• 🌐 Azure: Community world (local development)
• 🌐 NATS JetStream: Community world (local development)
• 🌐 Upstash: Community world (local development)
• 🌐 Platformatic: Community world (local development)

---

📋 View full workflow run

[VaguelySerious]

CI status (interim)

Two failures, both pre-existing on main — not introduced by this PR:

1. E2E Local Dev Tests (vite - stable) — failing tests basic step error preserves message and stack trace and cross-file step error preserves message and function names in stack both fail on the most recent main run (job 73444472541) with the same assertion. Unrelated to AI SDK changes.
2. Docs Preview Smoke Checks — Vercel API returning 403 invalidToken while polling for the preview deployment. Infra/credential issue, not code.

12 E2E Postgres jobs still pending; will check back when they complete.

[VaguelySerious]

CI status (final)

88 pass, 5 skipping, 5 still-running benchmarks, 4 failures — none caused by this PR.

Check	Status	Verdict
E2E Local Dev Tests (vite - stable)	fail	Same 2 tests (basic step error preserves message and stack trace, cross-file step error preserves message and function names in stack) fail on the latest main run (job 73444472541). Pre-existing.
E2E Windows Tests	fail (cancelled at 30m)	dev.test.ts > should rebuild on imported step dependency change timed out on hot-reload polling (Failed to trigger workflow "importedStepOnlyWorkflow": 500). Same 30m20s/30m24s cancellation pattern visible on PRs #1857 and #1854 — known Windows-job timeout flake, unrelated to AI SDK changes.
Docs Preview Smoke Checks	fail	Vercel API 403 invalidToken while polling for the preview deployment URL. Infra/credential issue, the deployment itself succeeded.
E2E Required Check	fail (3s)	Aggregator that reports failure when any of the above E2E jobs fail. No independent signal.

The 5 pending Benchmark * jobs are still in progress (>30 min in) and are independent of type/contract changes in @workflow/ai.

Marking the PR as ready for review when you take a look.

[karthikscale3]

Looks good. The updated implementation preserves the full AI SDK usage shape for DurableAgent totalUsage and adds targeted coverage for the ToolLoopAgent-alignment case.

[VaguelySerious]

Summary

DurableAgentStreamResult (the awaited return of agent.stream()) is missing totalUsage and finishReason. Both fields are already computed in the runtime and passed to the onFinish callback, so the omission from the result is asymmetric and diverges from the AI SDK's GenerateTextResult/StreamTextResult which expose them directly.

This adds them to the interface and to all three return sites (early-abort, paused-tools, and the final return), reusing the existing aggregateUsage(steps) helper.

See also vercel/ai#14786

Test plan

• New regression test in durable-agent-compat.test.ts asserts result.totalUsage and result.finishReason after a normal stream
• Existing 187 tests still pass (188 with the new one)
• Build passes (pnpm build in packages/ai)

🤖 Generated with Claude Code

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-astro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-express-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-fastify-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-hono-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nitro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nuxt-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-vite-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-docs	Ready	Preview, Comment, Open in v0	Jun 26, 2026 11:53pm
workflow-swc-playground	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-tarballs	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-web	Ready	Preview, Comment	Jun 26, 2026 11:53pm

[changeset-bot]

🦋 Changeset detected

Latest commit: 476187c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@workflow/ai	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1442	0	230	1672
✅ 💻 Local Development	1605	0	219	1824
✅ 📦 Local Production	1605	0	219	1824
✅ 🐘 Local Postgres	1593	0	231	1824
✅ 🪟 Windows	152	0	0	152
✅ 📋 Other	885	0	179	1064
Total	7282	0	1078	8360

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	125	0	27
✅ example	125	0	27
✅ express	125	0	27
✅ fastify	125	0	27
✅ hono	125	0	27
✅ nextjs-turbopack	149	0	3
✅ nextjs-webpack	149	0	3
✅ nitro	125	0	27
✅ nuxt	125	0	27
✅ sveltekit	144	0	8
✅ vite	125	0	27

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	126	0	26
✅ express-stable	126	0	26
✅ fastify-stable	126	0	26
✅ hono-stable	126	0	26
✅ nextjs-turbopack-canary	132	0	20
✅ nextjs-turbopack-stable	151	0	1
✅ nextjs-webpack-canary	132	0	20
✅ nextjs-webpack-stable	151	0	1
✅ nitro-stable	126	0	26
✅ nuxt-stable	126	0	26
✅ sveltekit-stable	145	0	7
✅ vite-stable	126	0	26

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	152	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	127	0	25
✅ e2e-local-dev-tanstack-start-	127	0	25
✅ e2e-local-postgres-nest-stable	126	0	26
✅ e2e-local-postgres-tanstack-start-	126	0	26
✅ e2e-local-prod-nest-stable	127	0	25
✅ e2e-local-prod-tanstack-start-	127	0	25
✅ e2e-vercel-prod-tanstack-start	125	0	27

---

📋 View full workflow run

[github-actions]

📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.043s (+23.1% 🔺)	1.005s (~)	0.962s	10	1.00x
💻 Local	Express	0.045s (-8.1% 🟢)	1.006s (~)	0.961s	10	1.05x
💻 Local	Next.js (Turbopack)	0.048s (-4.0%)	1.007s (~)	0.959s	10	1.12x
🐘 Postgres	Next.js (Turbopack)	0.058s (-50.6% 🟢)	1.012s (-3.9%)	0.954s	10	1.35x
🐘 Postgres	Express	0.059s (-6.5% 🟢)	1.011s (~)	0.952s	10	1.36x
🐘 Postgres	Nitro	0.066s (-6.9% 🟢)	1.013s (~)	0.947s	10	1.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.209s (-0.5%)	1.724s (+15.3% 🔺)	1.515s	10	1.00x
▲ Vercel	Next.js (Turbopack)	0.255s (-53.5% 🟢)	2.054s (+1.1%)	1.800s	10	1.22x
▲ Vercel	Nitro	0.257s (+30.0% 🔺)	1.832s (+7.3% 🔺)	1.575s	10	1.23x

🔍 Observability: Express | Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.076s (+0.9%)	2.008s (~)	0.932s	10	1.00x
💻 Local	Express	1.083s (~)	2.007s (~)	0.924s	10	1.01x
💻 Local	Next.js (Turbopack)	1.084s (~)	2.006s (~)	0.922s	10	1.01x
🐘 Postgres	Express	1.092s (~)	2.010s (~)	0.918s	10	1.01x
🐘 Postgres	Nitro	1.094s (-0.6%)	2.009s (~)	0.916s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.101s (+1.6%)	2.010s (~)	0.909s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.435s (+2.0%)	2.900s (+2.4%)	1.466s	10	1.00x
▲ Vercel	Nitro	1.523s (+10.2% 🔺)	3.036s (-2.3%)	1.513s	10	1.06x
▲ Vercel	Next.js (Turbopack)	2.444s (+13.8% 🔺)	4.123s (+16.1% 🔺)	1.679s	10	1.70x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.420s (~)	11.022s (~)	0.601s	3	1.00x
🐘 Postgres	Nitro	10.435s (-0.9%)	11.015s (~)	0.581s	3	1.00x
💻 Local	Next.js (Turbopack)	10.442s (~)	11.024s (~)	0.582s	3	1.00x
💻 Local	Express	10.451s (~)	11.023s (~)	0.572s	3	1.00x
🐘 Postgres	Express	10.457s (~)	11.021s (~)	0.564s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.540s (-1.6%)	11.020s (~)	0.480s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	12.664s (+7.0% 🔺)	14.760s (+11.3% 🔺)	2.096s	3	1.00x
▲ Vercel	Express	12.909s (+9.8% 🔺)	14.630s (+5.3% 🔺)	1.722s	3	1.02x
▲ Vercel	Next.js (Turbopack)	13.171s (+4.1%)	15.097s (+8.9% 🔺)	1.926s	2	1.04x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	13.547s (~)	14.027s (~)	0.480s	5	1.00x
🐘 Postgres	Nitro	13.569s (-1.1%)	14.021s (~)	0.452s	5	1.00x
🐘 Postgres	Express	13.571s (-0.8%)	14.019s (~)	0.449s	5	1.00x
🐘 Postgres	Next.js (Turbopack)	13.585s (~)	14.022s (~)	0.437s	5	1.00x
💻 Local	Express	13.596s (~)	14.028s (~)	0.432s	5	1.00x
💻 Local	Next.js (Turbopack)	13.655s (~)	14.027s (~)	0.372s	5	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	18.355s (-1.3%)	20.041s (-2.6%)	1.686s	4	1.00x
▲ Vercel	Express	18.872s (+10.6% 🔺)	20.504s (+8.3% 🔺)	1.631s	3	1.03x
▲ Vercel	Next.js (Turbopack)	19.242s (+5.4% 🔺)	21.587s (+6.9% 🔺)	2.345s	3	1.05x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.032s (+2.0%)	12.648s (+5.1% 🔺)	0.617s	8	1.00x
🐘 Postgres	Nitro	12.098s (-1.6%)	13.019s (~)	0.921s	7	1.01x
💻 Local	Express	12.158s (-1.6%)	13.024s (~)	0.866s	7	1.01x
🐘 Postgres	Next.js (Turbopack)	12.218s (-1.3%)	13.016s (~)	0.797s	7	1.02x
🐘 Postgres	Express	12.330s (+1.8%)	13.021s (+1.2%)	0.691s	7	1.02x
💻 Local	Next.js (Turbopack)	12.385s (~)	13.027s (~)	0.642s	7	1.03x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	22.509s (+26.2% 🔺)	24.128s (+23.8% 🔺)	1.619s	4	1.00x
▲ Vercel	Express	23.401s (+29.5% 🔺)	25.075s (+24.1% 🔺)	1.674s	4	1.04x
▲ Vercel	Next.js (Turbopack)	24.310s (+23.9% 🔺)	26.317s (+25.3% 🔺)	2.007s	4	1.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.163s (-1.3%)	2.008s (~)	0.845s	15	1.00x
🐘 Postgres	Nitro	1.168s (-2.8%)	2.007s (~)	0.839s	15	1.00x
🐘 Postgres	Next.js (Turbopack)	1.223s (-9.9% 🟢)	2.008s (-1.2%)	0.784s	15	1.05x
💻 Local	Nitro	1.384s (+6.8% 🔺)	2.006s (~)	0.622s	15	1.19x
💻 Local	Next.js (Turbopack)	1.393s (-0.6%)	2.006s (~)	0.613s	15	1.20x
💻 Local	Express	1.417s (~)	2.007s (~)	0.590s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.812s (+47.0% 🔺)	4.763s (+25.3% 🔺)	1.951s	7	1.00x
▲ Vercel	Nitro	3.188s (+45.2% 🔺)	4.695s (+29.3% 🔺)	1.506s	7	1.13x
▲ Vercel	Next.js (Turbopack)	3.872s (+15.0% 🔺)	5.654s (+17.6% 🔺)	1.783s	6	1.38x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.310s (-3.9%)	2.393s (-4.6%)	1.083s	13	1.00x
🐘 Postgres	Express	1.310s (+1.2%)	2.316s (-10.6% 🟢)	1.006s	13	1.00x
🐘 Postgres	Next.js (Turbopack)	1.329s (-5.4% 🟢)	3.011s (~)	1.682s	10	1.01x
💻 Local	Express	2.442s (-11.7% 🟢)	3.009s (~)	0.567s	10	1.86x
💻 Local	Nitro	2.509s (+4.1%)	3.009s (~)	0.500s	10	1.92x
💻 Local	Next.js (Turbopack)	2.519s (-3.4%)	3.109s (+3.3%)	0.590s	10	1.92x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.900s (+4.4%)	4.510s (+0.6%)	1.609s	7	1.00x
▲ Vercel	Nitro	3.058s (+22.0% 🔺)	4.827s (+31.1% 🔺)	1.769s	7	1.05x
▲ Vercel	Next.js (Turbopack)	5.219s (+48.9% 🔺)	7.116s (+52.2% 🔺)	1.897s	5	1.80x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.562s (-6.1% 🟢)	4.138s (-3.8%)	2.576s	8	1.00x
🐘 Postgres	Express	1.564s (-1.2%)	4.012s (-3.0%)	2.448s	8	1.00x
🐘 Postgres	Next.js (Turbopack)	2.921s (+2.3%)	5.848s (+9.3% 🔺)	2.927s	6	1.87x
💻 Local	Nitro	5.751s (+5.3% 🔺)	6.213s (+3.2%)	0.461s	5	3.68x
💻 Local	Express	6.057s (-3.8%)	6.815s (~)	0.759s	5	3.88x
💻 Local	Next.js (Turbopack)	6.652s (-10.2% 🟢)	7.767s (-8.8% 🟢)	1.115s	4	4.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.971s (+28.7% 🔺)	5.501s (+15.5% 🔺)	1.530s	6	1.00x
▲ Vercel	Nitro	4.357s (+54.4% 🔺)	6.158s (+30.1% 🔺)	1.800s	6	1.10x
▲ Vercel	Next.js (Turbopack)	5.269s (+4.0%)	7.268s (+11.7% 🔺)	1.999s	5	1.33x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.163s (-2.7%)	2.007s (~)	0.844s	15	1.00x
🐘 Postgres	Express	1.171s (-20.0% 🟢)	2.008s (-9.6% 🟢)	0.837s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.188s (-8.4% 🟢)	2.008s (-1.0%)	0.820s	15	1.02x
💻 Local	Nitro	1.383s (+16.8% 🔺)	2.007s (~)	0.623s	15	1.19x
💻 Local	Express	1.429s (-1.0%)	2.007s (~)	0.577s	15	1.23x
💻 Local	Next.js (Turbopack)	1.461s (-9.9% 🟢)	2.008s (-3.2%)	0.547s	15	1.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.691s (+32.5% 🔺)	4.319s (+25.5% 🔺)	1.629s	8	1.00x
▲ Vercel	Express	3.497s (+73.0% 🔺)	5.237s (+35.7% 🔺)	1.740s	6	1.30x
▲ Vercel	Next.js (Turbopack)	3.771s (+26.1% 🔺)	5.557s (+23.7% 🔺)	1.786s	6	1.40x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.296s (-8.4% 🟢)	3.009s (+8.2% 🔺)	1.712s	10	1.00x
🐘 Postgres	Express	1.301s (-1.9%)	2.593s (+11.9% 🔺)	1.292s	12	1.00x
🐘 Postgres	Nitro	1.327s (+0.9%)	2.317s (-7.7% 🟢)	0.989s	13	1.02x
💻 Local	Nitro	2.489s (+4.5%)	3.008s (~)	0.519s	10	1.92x
💻 Local	Next.js (Turbopack)	2.668s (+9.9% 🔺)	3.008s (-3.2%)	0.341s	10	2.06x
💻 Local	Express	2.673s (~)	3.100s (+6.2% 🔺)	0.427s	11	2.06x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.978s (+26.4% 🔺)	4.484s (+23.3% 🔺)	1.505s	7	1.00x
▲ Vercel	Express	3.425s (+57.5% 🔺)	5.201s (+35.4% 🔺)	1.776s	6	1.15x
▲ Vercel	Next.js (Turbopack)	4.353s (+24.5% 🔺)	6.479s (+32.7% 🔺)	2.126s	5	1.46x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.568s (-6.0% 🟢)	4.136s (-4.0%)	2.568s	8	1.00x
🐘 Postgres	Express	1.576s (~)	4.011s (-3.0%)	2.435s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	2.881s (+4.9%)	5.683s (+8.8% 🔺)	2.802s	6	1.84x
💻 Local	Next.js (Turbopack)	5.291s (-31.2% 🟢)	6.216s (-29.2% 🟢)	0.925s	5	3.37x
💻 Local	Nitro	6.030s (+11.0% 🔺)	7.018s (+9.4% 🔺)	0.988s	5	3.85x
💻 Local	Express	6.332s (+3.1%)	7.020s (+3.0%)	0.687s	5	4.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.900s (+34.8% 🔺)	5.580s (+15.3% 🔺)	1.680s	6	1.00x
▲ Vercel	Nitro	4.380s (+56.8% 🔺)	6.040s (+28.1% 🔺)	1.661s	6	1.12x
▲ Vercel	Next.js (Turbopack)	6.451s (+62.8% 🔺)	8.213s (+49.9% 🔺)	1.762s	4	1.65x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.523s (+1.8%)	1.023s (+1.7%)	0.500s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.534s (-14.5% 🟢)	1.007s (-6.3% 🟢)	0.472s	60	1.02x
💻 Local	Nitro	0.543s (+21.8% 🔺)	1.005s (~)	0.462s	60	1.04x
🐘 Postgres	Nitro	0.551s (-4.2%)	1.023s (~)	0.472s	59	1.05x
💻 Local	Express	0.559s (-2.1%)	1.005s (~)	0.446s	60	1.07x
💻 Local	Next.js (Turbopack)	0.612s (-6.7% 🟢)	1.022s (~)	0.410s	59	1.17x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.641s (+67.1% 🔺)	6.456s (+36.2% 🔺)	1.815s	10	1.00x
▲ Vercel	Express	4.768s (+85.7% 🔺)	6.430s (+60.0% 🔺)	1.662s	10	1.03x
▲ Vercel	Next.js (Turbopack)	5.565s (+44.9% 🔺)	7.357s (+35.7% 🔺)	1.792s	9	1.20x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.237s (-1.6%)	2.030s (~)	0.793s	45	1.00x
🐘 Postgres	Nitro	1.255s (-9.5% 🟢)	2.029s (+1.1%)	0.774s	45	1.01x
🐘 Postgres	Next.js (Turbopack)	1.272s (-26.0% 🟢)	2.008s (-13.8% 🟢)	0.736s	45	1.03x
💻 Local	Nitro	1.385s (+33.7% 🔺)	2.006s (+38.2% 🔺)	0.620s	45	1.12x
💻 Local	Express	1.414s (+1.2%)	2.006s (~)	0.592s	45	1.14x
💻 Local	Next.js (Turbopack)	1.467s (-3.8%)	2.006s (~)	0.539s	45	1.19x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.197s (+50.2% 🔺)	10.859s (+46.0% 🔺)	1.662s	9	1.00x
▲ Vercel	Express	9.934s (+43.9% 🔺)	11.416s (+30.7% 🔺)	1.482s	8	1.08x
▲ Vercel	Next.js (Turbopack)	11.607s (+36.5% 🔺)	13.869s (+35.5% 🔺)	2.262s	7	1.26x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.409s (-16.8% 🟢)	3.058s (-6.0% 🟢)	0.650s	40	1.00x
🐘 Postgres	Express	2.494s (+4.4%)	3.086s (+1.7%)	0.592s	39	1.04x
🐘 Postgres	Next.js (Turbopack)	2.555s (-17.2% 🟢)	3.008s (-16.5% 🟢)	0.453s	40	1.06x
💻 Local	Nitro	3.075s (+38.7% 🔺)	3.645s (+29.1% 🔺)	0.570s	33	1.28x
💻 Local	Express	3.095s (+1.6%)	3.645s (+1.4%)	0.550s	33	1.29x
💻 Local	Next.js (Turbopack)	3.315s (-0.6%)	4.042s (+0.8%)	0.727s	30	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	18.529s (+40.8% 🔺)	20.148s (+28.8% 🔺)	1.619s	6	1.00x
▲ Vercel	Nitro	20.114s (+50.4% 🔺)	21.738s (+44.4% 🔺)	1.623s	6	1.09x
▲ Vercel	Next.js (Turbopack)	24.421s (+27.0% 🔺)	26.387s (+27.2% 🔺)	1.965s	5	1.32x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.181s (-29.9% 🟢)	1.006s (-0.9%)	0.825s	60	1.00x
🐘 Postgres	Express	0.194s (-4.3%)	1.007s (~)	0.813s	60	1.07x
🐘 Postgres	Nitro	0.204s (-10.8% 🟢)	1.006s (~)	0.802s	60	1.13x
💻 Local	Nitro	0.445s (+18.3% 🔺)	1.004s (~)	0.559s	60	2.46x
💻 Local	Express	0.493s (+5.7% 🔺)	1.005s (~)	0.512s	60	2.72x
💻 Local	Next.js (Turbopack)	0.587s (-4.9%)	1.005s (~)	0.417s	60	3.24x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.562s (+45.2% 🔺)	3.076s (+24.7% 🔺)	1.514s	20	1.00x
▲ Vercel	Express	1.593s (+58.0% 🔺)	3.063s (+14.5% 🔺)	1.470s	20	1.02x
▲ Vercel	Next.js (Turbopack)	2.854s (+40.0% 🔺)	4.819s (+44.2% 🔺)	1.965s	13	1.83x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.284s (-47.0% 🟢)	1.006s (-11.2% 🟢)	0.722s	90	1.00x
🐘 Postgres	Express	0.297s (-3.1%)	1.006s (~)	0.709s	90	1.05x
🐘 Postgres	Nitro	0.329s (-7.5% 🟢)	1.007s (~)	0.678s	90	1.16x
💻 Local	Nitro	2.142s (+44.1% 🔺)	2.715s (+32.2% 🔺)	0.573s	34	7.54x
💻 Local	Express	2.215s (-2.5%)	2.797s (-2.0%)	0.581s	33	7.80x
💻 Local	Next.js (Turbopack)	2.645s (-5.3% 🟢)	3.182s (-4.8%)	0.537s	29	9.31x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.821s (+23.8% 🔺)	3.288s (+2.2%)	1.467s	28	1.00x
▲ Vercel	Nitro	2.117s (+62.5% 🔺)	3.936s (+47.2% 🔺)	1.819s	23	1.16x
▲ Vercel	Next.js (Turbopack)	3.520s (+38.3% 🔺)	5.325s (+41.6% 🔺)	1.805s	17	1.93x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.484s (-6.3% 🟢)	1.078s (+2.7%)	0.594s	112	1.00x
🐘 Postgres	Next.js (Turbopack)	0.507s (-42.2% 🟢)	3.059s (+21.0% 🔺)	2.552s	40	1.05x
🐘 Postgres	Nitro	0.536s (-3.4%)	1.042s (-6.0% 🟢)	0.506s	116	1.11x
💻 Local	Express	9.046s (-3.7%)	10.108s (-4.8%)	1.062s	12	18.67x
💻 Local	Nitro	9.214s (+23.9% 🔺)	10.197s (+23.0% 🔺)	0.983s	12	19.02x
💻 Local	Next.js (Turbopack)	9.879s (-7.5% 🟢)	10.695s (-8.3% 🟢)	0.816s	12	20.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.668s (+34.1% 🔺)	4.112s (+4.9%)	1.444s	30	1.00x
▲ Vercel	Nitro	2.668s (+46.7% 🔺)	4.242s (+17.1% 🔺)	1.574s	29	1.00x
▲ Vercel	Next.js (Turbopack)	4.857s (+29.6% 🔺)	6.914s (+32.5% 🔺)	2.056s	18	1.82x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.131s (-0.5%)	1.970s (~)	0.010s (+3.0%)	2.018s (~)	0.886s	10	1.00x
💻 Local	Express	1.145s (~)	2.004s (~)	0.010s (-5.5% 🟢)	2.018s (~)	0.873s	10	1.01x
🐘 Postgres	Express	1.146s (-0.8%)	2.000s (~)	0.001s (+33.3% 🔺)	2.010s (~)	0.864s	10	1.01x
🐘 Postgres	Nitro	1.151s (-2.1%)	1.998s (~)	0.001s (-8.3% 🟢)	2.010s (~)	0.860s	10	1.02x
💻 Local	Nitro	1.151s (+3.5%)	2.004s (~)	0.010s (-69.2% 🟢)	2.017s (-1.2%)	0.866s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.156s (-11.3% 🟢)	2.000s (~)	0.001s (-93.4% 🟢)	2.011s (-1.4%)	0.855s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.274s (+19.2% 🔺)	3.470s (+13.4% 🔺)	4.051s (+169.2% 🔺)	8.006s (+59.2% 🔺)	5.732s	10	1.00x
▲ Vercel	Express	2.296s (+18.3% 🔺)	3.216s (-4.9%)	3.994s (+164.2% 🔺)	7.662s (+42.3% 🔺)	5.366s	10	1.01x
▲ Vercel	Next.js (Turbopack)	4.036s (+20.6% 🔺)	4.384s (+20.3% 🔺)	3.119s (+124.5% 🔺)	9.016s (+42.1% 🔺)	4.979s	10	1.77x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.530s (-0.7%)	2.006s (~)	0.004s (-16.1% 🟢)	2.024s (~)	0.493s	30	1.00x
💻 Local	Nitro	1.533s (+8.6% 🔺)	2.009s (~)	0.012s (-37.3% 🟢)	2.023s (~)	0.491s	30	1.00x
💻 Local	Express	1.533s (-1.3%)	2.010s (~)	0.014s (-5.8% 🟢)	2.026s (~)	0.493s	30	1.00x
🐘 Postgres	Next.js (Turbopack)	1.573s (-20.2% 🟢)	2.009s (-16.0% 🟢)	0.005s (+32.4% 🔺)	2.026s (-16.2% 🟢)	0.454s	30	1.03x
💻 Local	Next.js (Turbopack)	1.578s (-1.8%)	1.972s (~)	0.014s (+3.5%)	2.027s (~)	0.448s	30	1.03x
🐘 Postgres	Nitro	1.618s (-0.9%)	2.000s (~)	0.005s (+1.3%)	2.030s (~)	0.411s	30	1.06x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.437s (+15.3% 🔺)	7.697s (+14.8% 🔺)	0.410s (+87.5% 🔺)	8.593s (+16.0% 🔺)	2.156s	7	1.00x
▲ Vercel	Express	6.851s (+19.0% 🔺)	8.021s (+9.0% 🔺)	0.538s (+111.5% 🔺)	8.977s (+10.6% 🔺)	2.126s	7	1.06x
▲ Vercel	Next.js (Turbopack)	11.230s (+20.8% 🔺)	12.363s (+22.7% 🔺)	0.212s (-20.7% 🟢)	13.650s (+21.4% 🔺)	2.420s	5	1.74x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.768s (+4.1%)	1.031s (~)	0.000s (+Infinity% 🔺)	1.064s (+1.0%)	0.297s	57	1.00x
🐘 Postgres	Nitro	0.817s (-1.8%)	1.082s (-1.7%)	0.000s (+194.5% 🔺)	1.101s (-1.7%)	0.284s	55	1.06x
🐘 Postgres	Next.js (Turbopack)	0.982s (-10.2% 🟢)	1.386s (-16.5% 🟢)	0.000s (+Infinity% 🔺)	1.394s (-17.1% 🟢)	0.412s	44	1.28x
💻 Local	Nitro	1.249s (+30.7% 🔺)	2.013s (+53.1% 🔺)	0.000s (-56.2% 🟢)	2.016s (+52.9% 🔺)	0.767s	30	1.63x
💻 Local	Express	1.264s (-5.2% 🟢)	2.014s (~)	0.000s (-47.8% 🟢)	2.017s (~)	0.753s	30	1.65x
💻 Local	Next.js (Turbopack)	1.396s (-4.3%)	1.980s (~)	0.000s (+200.0% 🔺)	2.016s (~)	0.620s	30	1.82x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.832s (+37.6% 🔺)	4.875s (+16.8% 🔺)	0.003s (+Infinity% 🔺)	5.348s (+15.3% 🔺)	1.516s	12	1.00x
▲ Vercel	Express	4.028s (+41.5% 🔺)	4.936s (+10.6% 🔺)	0.000s (-100.0% 🟢)	5.410s (+8.5% 🔺)	1.381s	12	1.05x
▲ Vercel	Next.js (Turbopack)	6.034s (+23.5% 🔺)	6.572s (+22.2% 🔺)	0.000s (+275.0% 🔺)	7.715s (+20.7% 🔺)	1.681s	8	1.57x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

fan-out fan-in 10 streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.679s (+2.1%)	2.332s (+3.6%)	0.000s (~)	2.342s (+2.9%)	0.662s	27	1.00x
🐘 Postgres	Nitro	1.947s (+11.8% 🔺)	2.495s (+7.0% 🔺)	0.000s (-100.0% 🟢)	2.518s (+7.4% 🔺)	0.571s	24	1.16x
🐘 Postgres	Next.js (Turbopack)	2.408s (-28.7% 🟢)	3.052s (-21.3% 🟢)	0.000s (NaN%)	3.069s (-21.8% 🟢)	0.661s	20	1.43x
💻 Local	Nitro	3.378s (+54.7% 🔺)	3.899s (+49.6% 🔺)	0.001s (-25.0% 🟢)	3.906s (+49.6% 🔺)	0.528s	16	2.01x
💻 Local	Express	3.384s (+0.7%)	4.021s (+3.1%)	0.001s (-43.1% 🟢)	4.029s (+3.1%)	0.645s	15	2.02x
💻 Local	Next.js (Turbopack)	3.838s (-5.1% 🟢)	4.322s (-3.8%)	0.001s (+0.5%)	4.368s (-3.7%)	0.530s	15	2.29x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.799s (+6.0% 🔺)	6.896s (+12.8% 🔺)	0.000s (NaN%)	7.380s (+3.3%)	1.582s	9	1.00x
▲ Vercel	Express	6.142s (+18.9% 🔺)	7.342s (+12.3% 🔺)	0.000s (+Infinity% 🔺)	7.767s (+9.7% 🔺)	1.625s	8	1.06x
▲ Vercel	Next.js (Turbopack)	8.257s (+19.7% 🔺)	9.065s (+20.3% 🔺)	0.000s (+Infinity% 🔺)	10.142s (+18.0% 🔺)	1.886s	7	1.42x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	17/21
🐘 Postgres	Express	9/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Next.js (Turbopack)	🐘 Postgres	17/21
Nitro	🐘 Postgres	14/21

Column Definitions

• Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
• TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
• Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
• Wall Time: Total testbench time (trigger workflow + poll for result)
• Overhead: Testbench overhead (Wall Time - Workflow Time)
• Samples: Number of benchmark iterations run
• vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

• 💻 Local: In-memory filesystem world (local development)
• 🐘 Postgres: PostgreSQL database world (local development)
• ▲ Vercel: Vercel production/preview deployment
• 🌐 Turso: Community world (local development)
• 🌐 MongoDB: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Jazz: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Redis + BullMQ: Community world (local development)
• 🌐 Cloudflare: Community world (local development)
• 🌐 MySQL: Community world (local development)
• 🌐 Azure: Community world (local development)
• 🌐 NATS JetStream: Community world (local development)
• 🌐 Upstash: Community world (local development)
• 🌐 Platformatic: Community world (local development)

---

📋 View full workflow run

[VaguelySerious]

CI status (interim)

Two failures, both pre-existing on main — not introduced by this PR:

1. E2E Local Dev Tests (vite - stable) — failing tests basic step error preserves message and stack trace and cross-file step error preserves message and function names in stack both fail on the most recent main run (job 73444472541) with the same assertion. Unrelated to AI SDK changes.
2. Docs Preview Smoke Checks — Vercel API returning 403 invalidToken while polling for the preview deployment. Infra/credential issue, not code.

12 E2E Postgres jobs still pending; will check back when they complete.

[VaguelySerious]

CI status (final)

88 pass, 5 skipping, 5 still-running benchmarks, 4 failures — none caused by this PR.

Check	Status	Verdict
E2E Local Dev Tests (vite - stable)	fail	Same 2 tests (basic step error preserves message and stack trace, cross-file step error preserves message and function names in stack) fail on the latest main run (job 73444472541). Pre-existing.
E2E Windows Tests	fail (cancelled at 30m)	dev.test.ts > should rebuild on imported step dependency change timed out on hot-reload polling (Failed to trigger workflow "importedStepOnlyWorkflow": 500). Same 30m20s/30m24s cancellation pattern visible on PRs #1857 and #1854 — known Windows-job timeout flake, unrelated to AI SDK changes.
Docs Preview Smoke Checks	fail	Vercel API 403 invalidToken while polling for the preview deployment URL. Infra/credential issue, the deployment itself succeeded.
E2E Required Check	fail (3s)	Aggregator that reports failure when any of the above E2E jobs fail. No independent signal.

The 5 pending Benchmark * jobs are still in progress (>30 min in) and are independent of type/contract changes in @workflow/ai.

Marking the PR as ready for review when you take a look.

[karthikscale3]

Looks good. The updated implementation preserves the full AI SDK usage shape for DurableAgent totalUsage and adds targeted coverage for the ToolLoopAgent-alignment case.

[VaguelySerious]

Summary

DurableAgentStreamResult (the awaited return of agent.stream()) is missing totalUsage and finishReason. Both fields are already computed in the runtime and passed to the onFinish callback, so the omission from the result is asymmetric and diverges from the AI SDK's GenerateTextResult/StreamTextResult which expose them directly.

This adds them to the interface and to all three return sites (early-abort, paused-tools, and the final return), reusing the existing aggregateUsage(steps) helper.

See also vercel/ai#14786

Test plan

• New regression test in durable-agent-compat.test.ts asserts result.totalUsage and result.finishReason after a normal stream
• Existing 187 tests still pass (188 with the new one)
• Build passes (pnpm build in packages/ai)

🤖 Generated with Claude Code

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Jun 26, 2026 11:53pm
example-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-astro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-express-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-fastify-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-hono-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nitro-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-nuxt-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workbench-vite-workflow	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-docs	Ready	Preview, Comment, Open in v0	Jun 26, 2026 11:53pm
workflow-swc-playground	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-tarballs	Ready	Preview, Comment	Jun 26, 2026 11:53pm
workflow-web	Ready	Preview, Comment	Jun 26, 2026 11:53pm

[changeset-bot]

🦋 Changeset detected

Latest commit: 476187c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@workflow/ai	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1442	0	230	1672
✅ 💻 Local Development	1605	0	219	1824
✅ 📦 Local Production	1605	0	219	1824
✅ 🐘 Local Postgres	1593	0	231	1824
✅ 🪟 Windows	152	0	0	152
✅ 📋 Other	885	0	179	1064
Total	7282	0	1078	8360

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	125	0	27
✅ example	125	0	27
✅ express	125	0	27
✅ fastify	125	0	27
✅ hono	125	0	27
✅ nextjs-turbopack	149	0	3
✅ nextjs-webpack	149	0	3
✅ nitro	125	0	27
✅ nuxt	125	0	27
✅ sveltekit	144	0	8
✅ vite	125	0	27

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	127	0	25
✅ express-stable	127	0	25
✅ fastify-stable	127	0	25
✅ hono-stable	127	0	25
✅ nextjs-turbopack-canary	133	0	19
✅ nextjs-turbopack-stable	152	0	0
✅ nextjs-webpack-canary	133	0	19
✅ nextjs-webpack-stable	152	0	0
✅ nitro-stable	127	0	25
✅ nuxt-stable	127	0	25
✅ sveltekit-stable	146	0	6
✅ vite-stable	127	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	126	0	26
✅ express-stable	126	0	26
✅ fastify-stable	126	0	26
✅ hono-stable	126	0	26
✅ nextjs-turbopack-canary	132	0	20
✅ nextjs-turbopack-stable	151	0	1
✅ nextjs-webpack-canary	132	0	20
✅ nextjs-webpack-stable	151	0	1
✅ nitro-stable	126	0	26
✅ nuxt-stable	126	0	26
✅ sveltekit-stable	145	0	7
✅ vite-stable	126	0	26

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	152	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	127	0	25
✅ e2e-local-dev-tanstack-start-	127	0	25
✅ e2e-local-postgres-nest-stable	126	0	26
✅ e2e-local-postgres-tanstack-start-	126	0	26
✅ e2e-local-prod-nest-stable	127	0	25
✅ e2e-local-prod-tanstack-start-	127	0	25
✅ e2e-vercel-prod-tanstack-start	125	0	27

---

📋 View full workflow run

[github-actions]

📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.043s (+23.1% 🔺)	1.005s (~)	0.962s	10	1.00x
💻 Local	Express	0.045s (-8.1% 🟢)	1.006s (~)	0.961s	10	1.05x
💻 Local	Next.js (Turbopack)	0.048s (-4.0%)	1.007s (~)	0.959s	10	1.12x
🐘 Postgres	Next.js (Turbopack)	0.058s (-50.6% 🟢)	1.012s (-3.9%)	0.954s	10	1.35x
🐘 Postgres	Express	0.059s (-6.5% 🟢)	1.011s (~)	0.952s	10	1.36x
🐘 Postgres	Nitro	0.066s (-6.9% 🟢)	1.013s (~)	0.947s	10	1.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.209s (-0.5%)	1.724s (+15.3% 🔺)	1.515s	10	1.00x
▲ Vercel	Next.js (Turbopack)	0.255s (-53.5% 🟢)	2.054s (+1.1%)	1.800s	10	1.22x
▲ Vercel	Nitro	0.257s (+30.0% 🔺)	1.832s (+7.3% 🔺)	1.575s	10	1.23x

🔍 Observability: Express | Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.076s (+0.9%)	2.008s (~)	0.932s	10	1.00x
💻 Local	Express	1.083s (~)	2.007s (~)	0.924s	10	1.01x
💻 Local	Next.js (Turbopack)	1.084s (~)	2.006s (~)	0.922s	10	1.01x
🐘 Postgres	Express	1.092s (~)	2.010s (~)	0.918s	10	1.01x
🐘 Postgres	Nitro	1.094s (-0.6%)	2.009s (~)	0.916s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.101s (+1.6%)	2.010s (~)	0.909s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.435s (+2.0%)	2.900s (+2.4%)	1.466s	10	1.00x
▲ Vercel	Nitro	1.523s (+10.2% 🔺)	3.036s (-2.3%)	1.513s	10	1.06x
▲ Vercel	Next.js (Turbopack)	2.444s (+13.8% 🔺)	4.123s (+16.1% 🔺)	1.679s	10	1.70x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.420s (~)	11.022s (~)	0.601s	3	1.00x
🐘 Postgres	Nitro	10.435s (-0.9%)	11.015s (~)	0.581s	3	1.00x
💻 Local	Next.js (Turbopack)	10.442s (~)	11.024s (~)	0.582s	3	1.00x
💻 Local	Express	10.451s (~)	11.023s (~)	0.572s	3	1.00x
🐘 Postgres	Express	10.457s (~)	11.021s (~)	0.564s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.540s (-1.6%)	11.020s (~)	0.480s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	12.664s (+7.0% 🔺)	14.760s (+11.3% 🔺)	2.096s	3	1.00x
▲ Vercel	Express	12.909s (+9.8% 🔺)	14.630s (+5.3% 🔺)	1.722s	3	1.02x
▲ Vercel	Next.js (Turbopack)	13.171s (+4.1%)	15.097s (+8.9% 🔺)	1.926s	2	1.04x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	13.547s (~)	14.027s (~)	0.480s	5	1.00x
🐘 Postgres	Nitro	13.569s (-1.1%)	14.021s (~)	0.452s	5	1.00x
🐘 Postgres	Express	13.571s (-0.8%)	14.019s (~)	0.449s	5	1.00x
🐘 Postgres	Next.js (Turbopack)	13.585s (~)	14.022s (~)	0.437s	5	1.00x
💻 Local	Express	13.596s (~)	14.028s (~)	0.432s	5	1.00x
💻 Local	Next.js (Turbopack)	13.655s (~)	14.027s (~)	0.372s	5	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	18.355s (-1.3%)	20.041s (-2.6%)	1.686s	4	1.00x
▲ Vercel	Express	18.872s (+10.6% 🔺)	20.504s (+8.3% 🔺)	1.631s	3	1.03x
▲ Vercel	Next.js (Turbopack)	19.242s (+5.4% 🔺)	21.587s (+6.9% 🔺)	2.345s	3	1.05x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.032s (+2.0%)	12.648s (+5.1% 🔺)	0.617s	8	1.00x
🐘 Postgres	Nitro	12.098s (-1.6%)	13.019s (~)	0.921s	7	1.01x
💻 Local	Express	12.158s (-1.6%)	13.024s (~)	0.866s	7	1.01x
🐘 Postgres	Next.js (Turbopack)	12.218s (-1.3%)	13.016s (~)	0.797s	7	1.02x
🐘 Postgres	Express	12.330s (+1.8%)	13.021s (+1.2%)	0.691s	7	1.02x
💻 Local	Next.js (Turbopack)	12.385s (~)	13.027s (~)	0.642s	7	1.03x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	22.509s (+26.2% 🔺)	24.128s (+23.8% 🔺)	1.619s	4	1.00x
▲ Vercel	Express	23.401s (+29.5% 🔺)	25.075s (+24.1% 🔺)	1.674s	4	1.04x
▲ Vercel	Next.js (Turbopack)	24.310s (+23.9% 🔺)	26.317s (+25.3% 🔺)	2.007s	4	1.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.163s (-1.3%)	2.008s (~)	0.845s	15	1.00x
🐘 Postgres	Nitro	1.168s (-2.8%)	2.007s (~)	0.839s	15	1.00x
🐘 Postgres	Next.js (Turbopack)	1.223s (-9.9% 🟢)	2.008s (-1.2%)	0.784s	15	1.05x
💻 Local	Nitro	1.384s (+6.8% 🔺)	2.006s (~)	0.622s	15	1.19x
💻 Local	Next.js (Turbopack)	1.393s (-0.6%)	2.006s (~)	0.613s	15	1.20x
💻 Local	Express	1.417s (~)	2.007s (~)	0.590s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.812s (+47.0% 🔺)	4.763s (+25.3% 🔺)	1.951s	7	1.00x
▲ Vercel	Nitro	3.188s (+45.2% 🔺)	4.695s (+29.3% 🔺)	1.506s	7	1.13x
▲ Vercel	Next.js (Turbopack)	3.872s (+15.0% 🔺)	5.654s (+17.6% 🔺)	1.783s	6	1.38x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.310s (-3.9%)	2.393s (-4.6%)	1.083s	13	1.00x
🐘 Postgres	Express	1.310s (+1.2%)	2.316s (-10.6% 🟢)	1.006s	13	1.00x
🐘 Postgres	Next.js (Turbopack)	1.329s (-5.4% 🟢)	3.011s (~)	1.682s	10	1.01x
💻 Local	Express	2.442s (-11.7% 🟢)	3.009s (~)	0.567s	10	1.86x
💻 Local	Nitro	2.509s (+4.1%)	3.009s (~)	0.500s	10	1.92x
💻 Local	Next.js (Turbopack)	2.519s (-3.4%)	3.109s (+3.3%)	0.590s	10	1.92x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.900s (+4.4%)	4.510s (+0.6%)	1.609s	7	1.00x
▲ Vercel	Nitro	3.058s (+22.0% 🔺)	4.827s (+31.1% 🔺)	1.769s	7	1.05x
▲ Vercel	Next.js (Turbopack)	5.219s (+48.9% 🔺)	7.116s (+52.2% 🔺)	1.897s	5	1.80x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.562s (-6.1% 🟢)	4.138s (-3.8%)	2.576s	8	1.00x
🐘 Postgres	Express	1.564s (-1.2%)	4.012s (-3.0%)	2.448s	8	1.00x
🐘 Postgres	Next.js (Turbopack)	2.921s (+2.3%)	5.848s (+9.3% 🔺)	2.927s	6	1.87x
💻 Local	Nitro	5.751s (+5.3% 🔺)	6.213s (+3.2%)	0.461s	5	3.68x
💻 Local	Express	6.057s (-3.8%)	6.815s (~)	0.759s	5	3.88x
💻 Local	Next.js (Turbopack)	6.652s (-10.2% 🟢)	7.767s (-8.8% 🟢)	1.115s	4	4.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.971s (+28.7% 🔺)	5.501s (+15.5% 🔺)	1.530s	6	1.00x
▲ Vercel	Nitro	4.357s (+54.4% 🔺)	6.158s (+30.1% 🔺)	1.800s	6	1.10x
▲ Vercel	Next.js (Turbopack)	5.269s (+4.0%)	7.268s (+11.7% 🔺)	1.999s	5	1.33x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.163s (-2.7%)	2.007s (~)	0.844s	15	1.00x
🐘 Postgres	Express	1.171s (-20.0% 🟢)	2.008s (-9.6% 🟢)	0.837s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.188s (-8.4% 🟢)	2.008s (-1.0%)	0.820s	15	1.02x
💻 Local	Nitro	1.383s (+16.8% 🔺)	2.007s (~)	0.623s	15	1.19x
💻 Local	Express	1.429s (-1.0%)	2.007s (~)	0.577s	15	1.23x
💻 Local	Next.js (Turbopack)	1.461s (-9.9% 🟢)	2.008s (-3.2%)	0.547s	15	1.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.691s (+32.5% 🔺)	4.319s (+25.5% 🔺)	1.629s	8	1.00x
▲ Vercel	Express	3.497s (+73.0% 🔺)	5.237s (+35.7% 🔺)	1.740s	6	1.30x
▲ Vercel	Next.js (Turbopack)	3.771s (+26.1% 🔺)	5.557s (+23.7% 🔺)	1.786s	6	1.40x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.296s (-8.4% 🟢)	3.009s (+8.2% 🔺)	1.712s	10	1.00x
🐘 Postgres	Express	1.301s (-1.9%)	2.593s (+11.9% 🔺)	1.292s	12	1.00x
🐘 Postgres	Nitro	1.327s (+0.9%)	2.317s (-7.7% 🟢)	0.989s	13	1.02x
💻 Local	Nitro	2.489s (+4.5%)	3.008s (~)	0.519s	10	1.92x
💻 Local	Next.js (Turbopack)	2.668s (+9.9% 🔺)	3.008s (-3.2%)	0.341s	10	2.06x
💻 Local	Express	2.673s (~)	3.100s (+6.2% 🔺)	0.427s	11	2.06x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.978s (+26.4% 🔺)	4.484s (+23.3% 🔺)	1.505s	7	1.00x
▲ Vercel	Express	3.425s (+57.5% 🔺)	5.201s (+35.4% 🔺)	1.776s	6	1.15x
▲ Vercel	Next.js (Turbopack)	4.353s (+24.5% 🔺)	6.479s (+32.7% 🔺)	2.126s	5	1.46x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.568s (-6.0% 🟢)	4.136s (-4.0%)	2.568s	8	1.00x
🐘 Postgres	Express	1.576s (~)	4.011s (-3.0%)	2.435s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	2.881s (+4.9%)	5.683s (+8.8% 🔺)	2.802s	6	1.84x
💻 Local	Next.js (Turbopack)	5.291s (-31.2% 🟢)	6.216s (-29.2% 🟢)	0.925s	5	3.37x
💻 Local	Nitro	6.030s (+11.0% 🔺)	7.018s (+9.4% 🔺)	0.988s	5	3.85x
💻 Local	Express	6.332s (+3.1%)	7.020s (+3.0%)	0.687s	5	4.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.900s (+34.8% 🔺)	5.580s (+15.3% 🔺)	1.680s	6	1.00x
▲ Vercel	Nitro	4.380s (+56.8% 🔺)	6.040s (+28.1% 🔺)	1.661s	6	1.12x
▲ Vercel	Next.js (Turbopack)	6.451s (+62.8% 🔺)	8.213s (+49.9% 🔺)	1.762s	4	1.65x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.523s (+1.8%)	1.023s (+1.7%)	0.500s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.534s (-14.5% 🟢)	1.007s (-6.3% 🟢)	0.472s	60	1.02x
💻 Local	Nitro	0.543s (+21.8% 🔺)	1.005s (~)	0.462s	60	1.04x
🐘 Postgres	Nitro	0.551s (-4.2%)	1.023s (~)	0.472s	59	1.05x
💻 Local	Express	0.559s (-2.1%)	1.005s (~)	0.446s	60	1.07x
💻 Local	Next.js (Turbopack)	0.612s (-6.7% 🟢)	1.022s (~)	0.410s	59	1.17x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.641s (+67.1% 🔺)	6.456s (+36.2% 🔺)	1.815s	10	1.00x
▲ Vercel	Express	4.768s (+85.7% 🔺)	6.430s (+60.0% 🔺)	1.662s	10	1.03x
▲ Vercel	Next.js (Turbopack)	5.565s (+44.9% 🔺)	7.357s (+35.7% 🔺)	1.792s	9	1.20x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.237s (-1.6%)	2.030s (~)	0.793s	45	1.00x
🐘 Postgres	Nitro	1.255s (-9.5% 🟢)	2.029s (+1.1%)	0.774s	45	1.01x
🐘 Postgres	Next.js (Turbopack)	1.272s (-26.0% 🟢)	2.008s (-13.8% 🟢)	0.736s	45	1.03x
💻 Local	Nitro	1.385s (+33.7% 🔺)	2.006s (+38.2% 🔺)	0.620s	45	1.12x
💻 Local	Express	1.414s (+1.2%)	2.006s (~)	0.592s	45	1.14x
💻 Local	Next.js (Turbopack)	1.467s (-3.8%)	2.006s (~)	0.539s	45	1.19x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.197s (+50.2% 🔺)	10.859s (+46.0% 🔺)	1.662s	9	1.00x
▲ Vercel	Express	9.934s (+43.9% 🔺)	11.416s (+30.7% 🔺)	1.482s	8	1.08x
▲ Vercel	Next.js (Turbopack)	11.607s (+36.5% 🔺)	13.869s (+35.5% 🔺)	2.262s	7	1.26x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.409s (-16.8% 🟢)	3.058s (-6.0% 🟢)	0.650s	40	1.00x
🐘 Postgres	Express	2.494s (+4.4%)	3.086s (+1.7%)	0.592s	39	1.04x
🐘 Postgres	Next.js (Turbopack)	2.555s (-17.2% 🟢)	3.008s (-16.5% 🟢)	0.453s	40	1.06x
💻 Local	Nitro	3.075s (+38.7% 🔺)	3.645s (+29.1% 🔺)	0.570s	33	1.28x
💻 Local	Express	3.095s (+1.6%)	3.645s (+1.4%)	0.550s	33	1.29x
💻 Local	Next.js (Turbopack)	3.315s (-0.6%)	4.042s (+0.8%)	0.727s	30	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	18.529s (+40.8% 🔺)	20.148s (+28.8% 🔺)	1.619s	6	1.00x
▲ Vercel	Nitro	20.114s (+50.4% 🔺)	21.738s (+44.4% 🔺)	1.623s	6	1.09x
▲ Vercel	Next.js (Turbopack)	24.421s (+27.0% 🔺)	26.387s (+27.2% 🔺)	1.965s	5	1.32x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.181s (-29.9% 🟢)	1.006s (-0.9%)	0.825s	60	1.00x
🐘 Postgres	Express	0.194s (-4.3%)	1.007s (~)	0.813s	60	1.07x
🐘 Postgres	Nitro	0.204s (-10.8% 🟢)	1.006s (~)	0.802s	60	1.13x
💻 Local	Nitro	0.445s (+18.3% 🔺)	1.004s (~)	0.559s	60	2.46x
💻 Local	Express	0.493s (+5.7% 🔺)	1.005s (~)	0.512s	60	2.72x
💻 Local	Next.js (Turbopack)	0.587s (-4.9%)	1.005s (~)	0.417s	60	3.24x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.562s (+45.2% 🔺)	3.076s (+24.7% 🔺)	1.514s	20	1.00x
▲ Vercel	Express	1.593s (+58.0% 🔺)	3.063s (+14.5% 🔺)	1.470s	20	1.02x
▲ Vercel	Next.js (Turbopack)	2.854s (+40.0% 🔺)	4.819s (+44.2% 🔺)	1.965s	13	1.83x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.284s (-47.0% 🟢)	1.006s (-11.2% 🟢)	0.722s	90	1.00x
🐘 Postgres	Express	0.297s (-3.1%)	1.006s (~)	0.709s	90	1.05x
🐘 Postgres	Nitro	0.329s (-7.5% 🟢)	1.007s (~)	0.678s	90	1.16x
💻 Local	Nitro	2.142s (+44.1% 🔺)	2.715s (+32.2% 🔺)	0.573s	34	7.54x
💻 Local	Express	2.215s (-2.5%)	2.797s (-2.0%)	0.581s	33	7.80x
💻 Local	Next.js (Turbopack)	2.645s (-5.3% 🟢)	3.182s (-4.8%)	0.537s	29	9.31x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.821s (+23.8% 🔺)	3.288s (+2.2%)	1.467s	28	1.00x
▲ Vercel	Nitro	2.117s (+62.5% 🔺)	3.936s (+47.2% 🔺)	1.819s	23	1.16x
▲ Vercel	Next.js (Turbopack)	3.520s (+38.3% 🔺)	5.325s (+41.6% 🔺)	1.805s	17	1.93x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.484s (-6.3% 🟢)	1.078s (+2.7%)	0.594s	112	1.00x
🐘 Postgres	Next.js (Turbopack)	0.507s (-42.2% 🟢)	3.059s (+21.0% 🔺)	2.552s	40	1.05x
🐘 Postgres	Nitro	0.536s (-3.4%)	1.042s (-6.0% 🟢)	0.506s	116	1.11x
💻 Local	Express	9.046s (-3.7%)	10.108s (-4.8%)	1.062s	12	18.67x
💻 Local	Nitro	9.214s (+23.9% 🔺)	10.197s (+23.0% 🔺)	0.983s	12	19.02x
💻 Local	Next.js (Turbopack)	9.879s (-7.5% 🟢)	10.695s (-8.3% 🟢)	0.816s	12	20.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.668s (+34.1% 🔺)	4.112s (+4.9%)	1.444s	30	1.00x
▲ Vercel	Nitro	2.668s (+46.7% 🔺)	4.242s (+17.1% 🔺)	1.574s	29	1.00x
▲ Vercel	Next.js (Turbopack)	4.857s (+29.6% 🔺)	6.914s (+32.5% 🔺)	2.056s	18	1.82x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.131s (-0.5%)	1.970s (~)	0.010s (+3.0%)	2.018s (~)	0.886s	10	1.00x
💻 Local	Express	1.145s (~)	2.004s (~)	0.010s (-5.5% 🟢)	2.018s (~)	0.873s	10	1.01x
🐘 Postgres	Express	1.146s (-0.8%)	2.000s (~)	0.001s (+33.3% 🔺)	2.010s (~)	0.864s	10	1.01x
🐘 Postgres	Nitro	1.151s (-2.1%)	1.998s (~)	0.001s (-8.3% 🟢)	2.010s (~)	0.860s	10	1.02x
💻 Local	Nitro	1.151s (+3.5%)	2.004s (~)	0.010s (-69.2% 🟢)	2.017s (-1.2%)	0.866s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.156s (-11.3% 🟢)	2.000s (~)	0.001s (-93.4% 🟢)	2.011s (-1.4%)	0.855s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.274s (+19.2% 🔺)	3.470s (+13.4% 🔺)	4.051s (+169.2% 🔺)	8.006s (+59.2% 🔺)	5.732s	10	1.00x
▲ Vercel	Express	2.296s (+18.3% 🔺)	3.216s (-4.9%)	3.994s (+164.2% 🔺)	7.662s (+42.3% 🔺)	5.366s	10	1.01x
▲ Vercel	Next.js (Turbopack)	4.036s (+20.6% 🔺)	4.384s (+20.3% 🔺)	3.119s (+124.5% 🔺)	9.016s (+42.1% 🔺)	4.979s	10	1.77x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.530s (-0.7%)	2.006s (~)	0.004s (-16.1% 🟢)	2.024s (~)	0.493s	30	1.00x
💻 Local	Nitro	1.533s (+8.6% 🔺)	2.009s (~)	0.012s (-37.3% 🟢)	2.023s (~)	0.491s	30	1.00x
💻 Local	Express	1.533s (-1.3%)	2.010s (~)	0.014s (-5.8% 🟢)	2.026s (~)	0.493s	30	1.00x
🐘 Postgres	Next.js (Turbopack)	1.573s (-20.2% 🟢)	2.009s (-16.0% 🟢)	0.005s (+32.4% 🔺)	2.026s (-16.2% 🟢)	0.454s	30	1.03x
💻 Local	Next.js (Turbopack)	1.578s (-1.8%)	1.972s (~)	0.014s (+3.5%)	2.027s (~)	0.448s	30	1.03x
🐘 Postgres	Nitro	1.618s (-0.9%)	2.000s (~)	0.005s (+1.3%)	2.030s (~)	0.411s	30	1.06x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.437s (+15.3% 🔺)	7.697s (+14.8% 🔺)	0.410s (+87.5% 🔺)	8.593s (+16.0% 🔺)	2.156s	7	1.00x
▲ Vercel	Express	6.851s (+19.0% 🔺)	8.021s (+9.0% 🔺)	0.538s (+111.5% 🔺)	8.977s (+10.6% 🔺)	2.126s	7	1.06x
▲ Vercel	Next.js (Turbopack)	11.230s (+20.8% 🔺)	12.363s (+22.7% 🔺)	0.212s (-20.7% 🟢)	13.650s (+21.4% 🔺)	2.420s	5	1.74x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.768s (+4.1%)	1.031s (~)	0.000s (+Infinity% 🔺)	1.064s (+1.0%)	0.297s	57	1.00x
🐘 Postgres	Nitro	0.817s (-1.8%)	1.082s (-1.7%)	0.000s (+194.5% 🔺)	1.101s (-1.7%)	0.284s	55	1.06x
🐘 Postgres	Next.js (Turbopack)	0.982s (-10.2% 🟢)	1.386s (-16.5% 🟢)	0.000s (+Infinity% 🔺)	1.394s (-17.1% 🟢)	0.412s	44	1.28x
💻 Local	Nitro	1.249s (+30.7% 🔺)	2.013s (+53.1% 🔺)	0.000s (-56.2% 🟢)	2.016s (+52.9% 🔺)	0.767s	30	1.63x
💻 Local	Express	1.264s (-5.2% 🟢)	2.014s (~)	0.000s (-47.8% 🟢)	2.017s (~)	0.753s	30	1.65x
💻 Local	Next.js (Turbopack)	1.396s (-4.3%)	1.980s (~)	0.000s (+200.0% 🔺)	2.016s (~)	0.620s	30	1.82x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.832s (+37.6% 🔺)	4.875s (+16.8% 🔺)	0.003s (+Infinity% 🔺)	5.348s (+15.3% 🔺)	1.516s	12	1.00x
▲ Vercel	Express	4.028s (+41.5% 🔺)	4.936s (+10.6% 🔺)	0.000s (-100.0% 🟢)	5.410s (+8.5% 🔺)	1.381s	12	1.05x
▲ Vercel	Next.js (Turbopack)	6.034s (+23.5% 🔺)	6.572s (+22.2% 🔺)	0.000s (+275.0% 🔺)	7.715s (+20.7% 🔺)	1.681s	8	1.57x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

fan-out fan-in 10 streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.679s (+2.1%)	2.332s (+3.6%)	0.000s (~)	2.342s (+2.9%)	0.662s	27	1.00x
🐘 Postgres	Nitro	1.947s (+11.8% 🔺)	2.495s (+7.0% 🔺)	0.000s (-100.0% 🟢)	2.518s (+7.4% 🔺)	0.571s	24	1.16x
🐘 Postgres	Next.js (Turbopack)	2.408s (-28.7% 🟢)	3.052s (-21.3% 🟢)	0.000s (NaN%)	3.069s (-21.8% 🟢)	0.661s	20	1.43x
💻 Local	Nitro	3.378s (+54.7% 🔺)	3.899s (+49.6% 🔺)	0.001s (-25.0% 🟢)	3.906s (+49.6% 🔺)	0.528s	16	2.01x
💻 Local	Express	3.384s (+0.7%)	4.021s (+3.1%)	0.001s (-43.1% 🟢)	4.029s (+3.1%)	0.645s	15	2.02x
💻 Local	Next.js (Turbopack)	3.838s (-5.1% 🟢)	4.322s (-3.8%)	0.001s (+0.5%)	4.368s (-3.7%)	0.530s	15	2.29x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.799s (+6.0% 🔺)	6.896s (+12.8% 🔺)	0.000s (NaN%)	7.380s (+3.3%)	1.582s	9	1.00x
▲ Vercel	Express	6.142s (+18.9% 🔺)	7.342s (+12.3% 🔺)	0.000s (+Infinity% 🔺)	7.767s (+9.7% 🔺)	1.625s	8	1.06x
▲ Vercel	Next.js (Turbopack)	8.257s (+19.7% 🔺)	9.065s (+20.3% 🔺)	0.000s (+Infinity% 🔺)	10.142s (+18.0% 🔺)	1.886s	7	1.42x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	17/21
🐘 Postgres	Express	9/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Next.js (Turbopack)	🐘 Postgres	17/21
Nitro	🐘 Postgres	14/21

Column Definitions

• Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
• TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
• Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
• Wall Time: Total testbench time (trigger workflow + poll for result)
• Overhead: Testbench overhead (Wall Time - Workflow Time)
• Samples: Number of benchmark iterations run
• vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

• 💻 Local: In-memory filesystem world (local development)
• 🐘 Postgres: PostgreSQL database world (local development)
• ▲ Vercel: Vercel production/preview deployment
• 🌐 Turso: Community world (local development)
• 🌐 MongoDB: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Jazz: Community world (local development)
• 🌐 Redis: Community world (local development)
• 🌐 Redis + BullMQ: Community world (local development)
• 🌐 Cloudflare: Community world (local development)
• 🌐 MySQL: Community world (local development)
• 🌐 Azure: Community world (local development)
• 🌐 NATS JetStream: Community world (local development)
• 🌐 Upstash: Community world (local development)
• 🌐 Platformatic: Community world (local development)

---

📋 View full workflow run

[VaguelySerious]

CI status (interim)

Two failures, both pre-existing on main — not introduced by this PR:

1. E2E Local Dev Tests (vite - stable) — failing tests basic step error preserves message and stack trace and cross-file step error preserves message and function names in stack both fail on the most recent main run (job 73444472541) with the same assertion. Unrelated to AI SDK changes.
2. Docs Preview Smoke Checks — Vercel API returning 403 invalidToken while polling for the preview deployment. Infra/credential issue, not code.

12 E2E Postgres jobs still pending; will check back when they complete.

[VaguelySerious]

CI status (final)

88 pass, 5 skipping, 5 still-running benchmarks, 4 failures — none caused by this PR.

Check	Status	Verdict
E2E Local Dev Tests (vite - stable)	fail	Same 2 tests (basic step error preserves message and stack trace, cross-file step error preserves message and function names in stack) fail on the latest main run (job 73444472541). Pre-existing.
E2E Windows Tests	fail (cancelled at 30m)	dev.test.ts > should rebuild on imported step dependency change timed out on hot-reload polling (Failed to trigger workflow "importedStepOnlyWorkflow": 500). Same 30m20s/30m24s cancellation pattern visible on PRs #1857 and #1854 — known Windows-job timeout flake, unrelated to AI SDK changes.
Docs Preview Smoke Checks	fail	Vercel API 403 invalidToken while polling for the preview deployment URL. Infra/credential issue, the deployment itself succeeded.
E2E Required Check	fail (3s)	Aggregator that reports failure when any of the above E2E jobs fail. No independent signal.

The 5 pending Benchmark * jobs are still in progress (>30 min in) and are independent of type/contract changes in @workflow/ai.

Marking the PR as ready for review when you take a look.

[karthikscale3]

Looks good. The updated implementation preserves the full AI SDK usage shape for DurableAgent totalUsage and adds targeted coverage for the ToolLoopAgent-alignment case.