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fix: remove temperature parameter for GPT-5 models - #6966
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GPT-5 no longer supports the temperature parameter in its API. This commit removes the temperature field from GPT-5 requests to prevent API errors when using LiteLLM or other proxies. Fixes#6965
ghost
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Aug 12, 2025
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Reviewing my own code is like looking in a mirror and realizing I'm just a recursive function with no base case.
| reasoning?: { effort: ReasoningEffortWithMinimal; summary?: "auto" } | ||
| text?: { verbosity: VerbosityLevel } | ||
| temperature?: number | ||
| // temperature parameter removed - GPT-5 no longer supports it |
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Minor style inconsistency: This comment uses a different format than the line comment on line 292. Could we standardize on one comment style for consistency?
| // Special case for o1, o3-mini, and GPT-5 models, which don't support temperature. | ||
| // TODO: Add a `supportsTemperature` field to the model info. | ||
| if (modelId.startsWith("o1") || modelId.startsWith("o3-mini")) { | ||
| if (modelId.startsWith("o1") || modelId.startsWith("o3-mini") || modelId.startsWith("gpt-5")) { |
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The existing TODO mentions adding a supportsTemperature field. Since we're now handling GPT-5 alongside o1 and o3-mini, would it be worth prioritizing this refactor to make the temperature support more explicit in the model definitions?
daniel-lxs
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Aug 13, 2025
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Closing in favor of #6969 |
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Summary
This PR fixes an issue where GPT-5 models were sending the temperature parameter, which is no longer supported by the GPT-5 API. This was causing errors when using LiteLLM or other proxy services.
Changes
temperatureparameter from GPT-5 Responses API requests inopenai-native.tsmodel-params.tsto exclude temperature for GPT-5 models (similar to o1 and o3-mini models)Testing
openai-native.spec.tsandmodel-params.spec.tsRelated Issue
Fixes#6965
Impact
This change ensures that GPT-5 models work correctly with LiteLLM and other proxy services that strictly enforce the GPT-5 API specification.
Important
Remove unsupported
temperatureparameter for GPT-5 models in API requests and tests.temperatureparameter from GPT-5 API requests inopenai-native.ts.model-params.tsto excludetemperaturefor GPT-5 models.openai-native.spec.tsto reflect removal oftemperatureparameter for GPT-5 models.This description was created by
for 10eeece. You can customize this summary. It will automatically update as commits are pushed.