github-starred/open-webui
2
0
Fork 0
mirror of https://github.com/open-webui/open-webui.git synced 2026-08-30 17:25:30 -05:00
Code Issues 2.4k Packages Projects Releases 129 Wiki Activity

feat: Support OpenAI responses API to enable new model compatibility #5653

New Issue
Closed
opened 2025-11-11 16:27:25 -06:00 by GiteaMirror · 8 comments
GiteaMirror commented 2025-11-11 16:27:25 -06:00
Owner
Copy Link
Copy Source

Originally created by @PeterDaveHello on GitHub (Jun 27, 2025).

Check Existing Issues

  • I have searched the existing issues and discussions.

Problem Description

Some newer or specialized OpenAI models are exclusively available via the /v1/responses endpoint. Attempts to use these models with the existing endpoints (such as /v1/chat/completions) result in the following error:

{
  "error": {
    "message": "This model is only supported in v1/responses and not in v1/chat/completions.",
    "type": "invalid_request_error",
    "param": "model",
    "code": null
  }
}

Currently, open-webui only supports the /v1/completions and /v1/chat/completions endpoints of the OpenAI API. Without support for /v1/responses, users cannot utilize the full range of OpenAI's latest models and features.

Desired Solution you'd like

Please add support for the /v1/responses API endpoint to ensure compatibility with all current and future OpenAI models. This enhancement will prevent the above error and allow users to leverage the complete capabilities of the OpenAI platform.

Alternatives Considered

No response

Additional Context

Originally created by @PeterDaveHello on GitHub (Jun 27, 2025). ### Check Existing Issues - [x] I have searched the existing issues and discussions. ### Problem Description Some newer or specialized OpenAI models are exclusively available via the /v1/responses endpoint. Attempts to use these models with the existing endpoints (such as /v1/chat/completions) result in the following error: ```json { "error": { "message": "This model is only supported in v1/responses and not in v1/chat/completions.", "type": "invalid_request_error", "param": "model", "code": null } } ``` Currently, open-webui only supports the /v1/completions and /v1/chat/completions endpoints of the OpenAI API. Without support for /v1/responses, users cannot utilize the full range of OpenAI's latest models and features. ### Desired Solution you'd like Please add support for the /v1/responses API endpoint to ensure compatibility with all current and future OpenAI models. This enhancement will prevent the above error and allow users to leverage the complete capabilities of the OpenAI platform. ### Alternatives Considered _No response_ ### Additional Context - [OpenAI API Reference: Responses](https://platform.openai.com/docs/api-reference/responses) - [Introducing the Responses API – OpenAI Community](https://community.openai.com/t/introducing-the-responses-api/1140929) - [Related Error Example – OpenAI Community](https://community.openai.com/t/responses-api-endpoint-reference-documentation-errors-and-issues/1140994)
GiteaMirror commented 2025-11-11 16:27:27 -06:00
Author
Owner
Copy Link
Copy Source

@jrkropp commented on GitHub (Jun 27, 2025):

I have been working on a manifold that brings support for the responses API (as a stop gap until if/when it's supported natively). You can test and monitor progress here. Supports visible reasoning summaries, optimized tool calling, web search, and much more. Working on adding deep research as well.

@jrkropp commented on GitHub (Jun 27, 2025): I have been working on a manifold that brings support for the responses API (as a stop gap until if/when it's supported natively). You can test and monitor progress [here](https://github.com/jrkropp/open-webui-developer-toolkit/tree/alpha-preview/functions/pipes/openai_responses_manifold). Supports visible reasoning summaries, optimized tool calling, web search, and much more. Working on adding deep research as well.
GiteaMirror commented 2025-11-11 16:27:27 -06:00
Author
Owner
Copy Link
Copy Source

@tjbck commented on GitHub (Jun 27, 2025):

PLEASE check for existing discussions/issues before creating one.

@tjbck commented on GitHub (Jun 27, 2025): PLEASE check for existing discussions/issues before creating one.
GiteaMirror commented 2025-11-11 16:27:27 -06:00
Author
Owner
Copy Link
Copy Source

@perelin commented on GitHub (Jul 22, 2025):

I have been running into the same issue with the deep-research models. @tjbck tbh: I did not find any discussion about this topic. Maybe I searched for the wrong terms? 404: This model is only supported in v1/responses and not in v1/chat/completions is the error message that the UI shows, no discussion search results for it.

@perelin commented on GitHub (Jul 22, 2025): I have been running into the same issue with the deep-research models. @tjbck tbh: I did not find any discussion about this topic. Maybe I searched for the wrong terms? `404: This model is only supported in v1/responses and not in v1/chat/completions` is the error message that the UI shows, no discussion search results for it.
GiteaMirror commented 2025-11-11 16:27:28 -06:00
Author
Owner
Copy Link
Copy Source

@Oatu4396 commented on GitHub (Jul 23, 2025):

I have been running into the same issue with the deep-research models. @tjbck tbh: I did not find any discussion about this topic. Maybe I searched for the wrong terms? 404: This model is only supported in v1/responses and not in v1/chat/completions is the error message that the UI shows, no discussion search results for it.

There's one discussion started around March suggesting adding support of responses API.

https://github.com/open-webui/open-webui/discussions/11874

@Oatu4396 commented on GitHub (Jul 23, 2025): > I have been running into the same issue with the deep-research models. [@tjbck](https://github.com/tjbck) tbh: I did not find any discussion about this topic. Maybe I searched for the wrong terms? `404: This model is only supported in v1/responses and not in v1/chat/completions` is the error message that the UI shows, no discussion search results for it. There's one discussion started around March suggesting adding support of responses API. https://github.com/open-webui/open-webui/discussions/11874
GiteaMirror commented 2025-11-11 16:27:28 -06:00
Author
Owner
Copy Link
Copy Source

@fuzedxb1 commented on GitHub (Aug 9, 2025):

Just wanted to show my support for this too, I think it's pretty essential. @jrkropp good work on what you've done to support this so far, ive used it and works perfect. Thank you.

@fuzedxb1 commented on GitHub (Aug 9, 2025): Just wanted to show my support for this too, I think it's pretty essential. @jrkropp good work on what you've done to support this so far, ive used it and works perfect. Thank you.
GiteaMirror commented 2025-11-11 16:27:31 -06:00
Author
Owner
Copy Link
Copy Source

@wizard-leoliao commented on GitHub (Oct 20, 2025):

Is this issue still unresolved? Almost all OpenAI API models except GPT‑5 are not working properly.

@wizard-leoliao commented on GitHub (Oct 20, 2025): Is this issue still unresolved? Almost all OpenAI API models except GPT‑5 are not working properly.
GiteaMirror commented 2025-11-11 16:27:32 -06:00
Author
Owner
Copy Link
Copy Source

@Classic298 commented on GitHub (Oct 20, 2025):

Responses API is not supported and probably will not be, because it is not an open standard like the OpenAI completions API.

It's like a proprietary endpoint like Anthropic or Gemini API.

Using one of the many pipes, pipelines or other implementations out there is recommended - alternatively, the use of a middleware like LiteLLM should also do the trick

@Classic298 commented on GitHub (Oct 20, 2025): Responses API is not supported and probably will not be, because it is not an open standard like the OpenAI completions API. It's like a proprietary endpoint like Anthropic or Gemini API. Using one of the many pipes, pipelines or other implementations out there is recommended - alternatively, the use of a middleware like LiteLLM should also do the trick
GiteaMirror commented 2025-11-11 16:27:33 -06:00
Author
Owner
Copy Link
Copy Source

@verynewtocode commented on GitHub (Nov 5, 2025):

Responses API is not supported and probably will not be, because it is not an open standard like the OpenAI completions API.

It's like a proprietary endpoint like Anthropic or Gemini API.

Using one of the many pipes, pipelines or other implementations out there is recommended - alternatively, the use of a middleware like LiteLLM should also do the trick

in your opinion, what are the chances that v1/responses is ever available

@verynewtocode commented on GitHub (Nov 5, 2025): > Responses API is not supported and probably will not be, because it is not an open standard like the OpenAI completions API. > > It's like a proprietary endpoint like Anthropic or Gemini API. > > Using one of the many pipes, pipelines or other implementations out there is recommended - alternatively, the use of a middleware like LiteLLM should also do the trick in your opinion, what are the chances that v1/responses is ever available
Sign in to join this conversation.
No Branch/Tag Specified
Branches Tags
Labels
Clear labels
bug
confirmed
confirmed issue
core
documentation
enhancement
good first issue
help wanted
non-core
pull-request
Mirrored from GitHub Pull Request
 python
question
testing wanted
No labels
Milestone
No items
No Milestone
Projects
Clear projects
No projects
Assignees
Clear assignees
GiteaMirror ninjasurge (Kaehlen Rog)
No Assignees
1 Participants
Notifications
Due Date
No due date set.
Dependencies

No dependencies set.

Reference: github-starred/open-webui#5653