Support for OpenAI Responses API

[thiagosalvatore]

Describe the solution you'd like
OpenAI suggests that people use responses API for new projects. LiteLLM already has support for responses API with fallback to completions API when not supported.

Are there any plans on adding support for responses API instead of chat completions api only?

[AdamosX]

For the meantime this can be bypassed by following LiteLLM docs: https://docs.litellm.ai/docs/providers/openai#getting-reasoning-content-in-chatcompletions
Edit: actually it doesn't work properly right now: BerriAI/litellm#13780

[klateefa]

@thiagosalvatore Thank you for reporting this. I understand the request is currently under review. Please keep me posted if anything else is needed. Thanks for your patience.

[iamirulofficial]

This chat-completion to responses api bridge will work for ADK? I am looking to integrate gpt 5.2 codex model in my agent. Is there any standard way @klateefa ?

[HydrogenC]

Plus one for this. New models like Doubao-2.0 suggest using Response API. We need Response API support for litellm.

[jasveer-os]

Is there any plan to pick this @klateefa ?
Seems like its under review from almost 6 months?

[itsgabrielv]

@klateefa are there any updates on this?

[FrigaZzz]

I’ve added a compatible Base LLM implementation to handle this as part of the PR: #5888