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Codex Issues / #25796

Codex failing to write code, just giving errors

Resolved 💬 3 comments Opened Jun 2, 2026 by JosephSich 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)?

26.576.....

What subscription do you have?

plus

What platform is your computer?

_No response_

What issue are you seeing?

<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/4875dbac-30a0-46c1-8bbf-b9300ec5d74d" />

What steps can reproduce the bug?

Feedback ID: 019e7c93-8f3f-7ef2-88e7-e7c146120975

What is the expected behavior?

<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/f6f6630a-43aa-4dff-8693-e44d51758e62" />

Additional information

{"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."}}
{"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."}}
{"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."}}

View original on GitHub ↗

3 Comments

github-actions[bot] contributor · 2 months ago

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

  • #25794
  • #25781
  • #25791
  • #24856

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etraut-openai contributor · 2 months ago

The gpt 5.3-codex model has been retired to make room for newer models. You'll need to choose a different model. You can still use 5.3-codex through the API if you'd like.

JosephSich · 2 months ago

I did that, and I am still getting the same error

On Tue, 2 Jun 2026, 9:34 am Eric Traut, @.***> wrote:

etraut-openai left a comment (openai/codex#25796) <https://github.com/openai/codex/issues/25796#issuecomment-4599816569> The gpt 5.3-codex model has been retired to make room for newer models. You'll need to choose a different model. You can still use 5.3-codex through the API if you'd like. — Reply to this email directly, view it on GitHub <https://github.com/openai/codex/issues/25796?email_source=notifications&email_token=BRYMTIBN33OFYTLOZHMAAK345Z7QFA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTINJZHE4DCNRVGY42M4TFMFZW63VGMF2XI2DPOKSWK5TFNZ2KYZTPN52GK4S7MNWGSY3L#issuecomment-4599816569>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BRYMTIBP25NGICSYWRF4H2T45Z7QFAVCNFSM6AAAAACZWWNG26VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DKOJZHAYTMNJWHE> . You are receiving this because you authored the thread.Message ID: @.***>