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[GH-ISSUE #18575] feat: Support for OpenAI gpt-5-pro #57305

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opened 2026-05-05 20:50:00 -05:00 by GiteaMirror · 1 comment
GiteaMirror commented 2026-05-05 20:50:00 -05:00
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Originally created by @i-rme on GitHub (Oct 24, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/18575

Check Existing Issues

  • I have searched all existing open AND closed issues and discussions for similar requests. I have found none that is comparable to my request.

Problem Description

Using OpenWebUI v0.6.34 with OpenAI API key, some models like GPT-5 work but others like GPT-5-PRO fail with this message:

This model is only supported in v1/responses and not in v1/chat/completions.

Desired Solution you'd like

It would be cool for OpenWebUI to be compatible with models like GPT-5-PRO and/or future models.

Alternatives Considered

n/a

Additional Context

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Originally created by @i-rme on GitHub (Oct 24, 2025). Original GitHub issue: https://github.com/open-webui/open-webui/issues/18575 ### Check Existing Issues - [x] I have searched all existing open AND closed issues and discussions for similar requests. I have found none that is comparable to my request. ### Problem Description Using OpenWebUI v0.6.34 with OpenAI API key, some models like GPT-5 work but others like GPT-5-PRO fail with this message: `This model is only supported in v1/responses and not in v1/chat/completions.` ### Desired Solution you'd like It would be cool for OpenWebUI to be compatible with models like GPT-5-PRO and/or future models. ### Alternatives Considered n/a ### Additional Context _No response_
GiteaMirror commented 2026-05-05 20:50:03 -05:00
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@sebslight commented on GitHub (Oct 24, 2025):

I'm afraid Open WebUI does not support the responses API (and as far as I know there's no intent in supporting it). You can bypass this issue by using OpenRouter

<!-- gh-comment-id:3445175254 --> @sebslight commented on GitHub (Oct 24, 2025): I'm afraid Open WebUI does not support the responses API (and as far as I know there's no intent in supporting it). You can bypass this issue by using OpenRouter
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Reference: github-starred/open-webui#57305
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