The 'gpt-5.3-codex' model is not supported when using Codex with a ChatGPT account.
Resolved 💬 3 comments Opened Jun 3, 2026 by lrnzfrr Closed Jun 4, 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)?
Version 26.601.21317 • Released Jun 2, 2026
What subscription do you have?
Plus
What platform is your computer?
Darwin 25.5.0 arm64 arm
What issue are you seeing?
i have a plus account but from today codex app answer me:
The 'gpt-5.3-codex' model is not supported when using Codex with a ChatGPT account.
What steps can reproduce the bug?
Feedback ID: 019cd1a6-d3f0-71c3-9c09-5b95ae5cd8ba
What is the expected behavior?
_No response_
Additional information
_No response_
3 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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I got the same error today and after checking available models i noticed that GPT-5.3-Codex is no longer available
<img width="995" height="229" alt="Image" src="https://github.com/user-attachments/assets/f3daa236-d42e-4252-9027-da96a24558b6" />
Online they mentioned
Announcement link: https://community.openai.com/t/gpt-5-2-and-gpt-5-3-codex-have-been-sunset-in-codex-with-chatgpt-subscriptions/1382273/13
This issue is a duplicate of https://github.com/openai/codex/issues/25839
The gpt-5.3-codex model has been retired. Please use one of the newer models.