Adjusted conversation by Codex
Resolved 💬 2 comments Opened Jun 2, 2026 by Leeuw1985 Closed Jun 2, 2026
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
What version of the Codex App are you using (From “About Codex” dialog)?
26.527.60818
What subscription do you have?
Plus
What platform is your computer?
Windows 11 x86
What issue are you seeing?
{"type":"error","status":400,"error":{"type":"invalid_request_error","message":"The 'gpt-5.3-codex' model is not supported when using Codex with a ChatGPT account."}}
What steps can reproduce the bug?
Feedback ID: no-active-thread-019e8731-af35-79b2-94a8-550b1c1cd11d
What is the expected behavior?
_No response_
Additional information
_No response_
2 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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The gpt 5.3-codex model has been retired to make room for newer models. You can still use it through the API if you want.