app-server supports set model_provider on `turn/start`
Resolved 💬 4 comments Opened Apr 22, 2026 by caibirdme Closed May 31, 2026
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
What variant of Codex are you using?
0.122.0
What feature would you like to see?
in thread/start, thread/resume, they both support {model, modelProvider}, while in turn/start, it just supports {model}.
Additional information
_No response_
4 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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The core harness doesn't generally support switching model providers in the middle of a thread. We recommend starting a new thread if you switch providers.
Can you explain the use case that's prompting this feature request?
We subscribed gpt-5.4 directly from openai platform, and subscribed other gpt-x models from azure(we have discount). It's normal for people to switch model among 5.4-high,5.4-mini,5.3-codex back and forth. But the problem is, we have two providers(openai & azure)
This feature request hasn't received enough upvotes, so I'm closing.