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Merge pull request #23271 from Chesars/docs/gpt54-reasoning-tools-limitation

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docs(openai): document gpt-5.4 reasoning_effort + tools limitation
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Cesar Garcia 2026-03-10 17:57:31 -03:00 • committed by GitHub
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17
docs/my-website/docs/providers/openai.md
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@ -632,7 +632,22 @@ curl -X POST 'http://0.0.0.0:4000/chat/completions' \
## OpenAI Chat Completion to Responses API Bridge
Call any Responses API model from OpenAI's `/chat/completions` endpoint.
Call any Responses API model from OpenAI's `/chat/completions` endpoint.
:::tip gpt-5.4 + reasoning_effort + function tools
OpenAI does not support `reasoning_effort` with function tools for `gpt-5.4` in `/v1/chat/completions`. Use the responses bridge instead:
```python
response = litellm.completion(
model="openai/responses/gpt-5.4", # routes to /v1/responses
messages=[{"role": "user", "content": "What's the weather?"}],
tools=[...],
reasoning_effort="low",
)
```
:::
<Tabs>
<TabItem value="sdk" label="SDK">

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docs/my-website/docs/reasoning_content.md
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@ -592,6 +592,12 @@ Expected Response
</TabItem>
</Tabs>
:::tip gpt-5.4: reasoning_effort + function tools
OpenAI does not support `reasoning_effort` with function tools for `gpt-5.4` in `/v1/chat/completions`. Use `openai/responses/gpt-5.4` to route through the Responses API instead. See [Responses API Bridge](/docs/providers/openai#openai-chat-completion-to-responses-api-bridge) for details.
:::
## OpenAI Responses API - Auto-Summary Control
When using OpenAI Responses API models (like `gpt-5`) via `/chat/completions` with `reasoning_effort`, you can control whether `summary="detailed"` is automatically added to the reasoning parameter.