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fix: add xAI models grok-4.20-multi-agent-0309 - #668

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fix: add xAI models grok-4.20-multi-agent-0309#668
github-actions[bot] wants to merge 1 commit into
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chore/autofix-issue-666

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fix: add xAI models grok-4.20-multi-agent-0309

Closes#666

Source issue: #666

Summary

FieldValue
Providerxai
Primary modelgrok-4.20-multi-agent-0309
Changed modelsgrok-4.20-multi-agent-0309
Added modelsgrok-4.20-multi-agent-0309
Updated modelsNone
Verification sources1
2

Verified metadata

ModelDisplay nameParentProvidersFormatFlavorToken limitsPricingLifecycle
grok-4.20-multi-agent-0309xAIopenaichatinput=1000000, output=not providedin/out=1.25/2.5 per 1M; cache read=0.2 per 1Mmultimodal=true; reasoning=true

Verification notes

No LLM verification step ran — model metadata was already complete in the issue.

sync_models vs proposed update

sync_models cross-check found differences. Official provider verification was used for the applied values, and sync_models discrepancies are listed below for review.

ModelFieldProposed updatesync_modelssync_models source models
grok-4.20-multi-agent-0309catalog entrypresentmissingNone

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ProjectDeploymentActionsUpdated (UTC)
ai-proxyReadyReadyPreview, CommentMay 28, 2026 11:18am

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Comment on lines +7326 to +7327
"format": "openai",
"flavor": "chat",

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P1 Badge Route multi-agent through Responses API

For this model, flavor: "chat" makes the proxy's /auto path select /chat/completions (see packages/proxy/src/proxy.ts switch on modelSpec.flavor), and normal chat-completion calls are forwarded to xAI's /chat/completions. xAI's current multi-agent docs state that grok-4.20-multi-agent does not work with the OpenAI Chat Completions API and must use the xAI SDK or Responses API instead, so users who pick the newly added model through the standard chat route will get provider errors rather than a working model.

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this is correct, will need to revisit this PR after landing support

@erin2722Erin McNulty (erin2722) added the model-blocked model cannot be added due to incompatibility issues that must be fixed in the gateway label Jun 2, 2026
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[BOT ISSUE] xAI: add missing grok-4.20-multi-agent-0309 primary model ID

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