Codex GPT-5.5 got deprecated, no other models selectable in xcode

Machine Learning & AI Apple Intelligence
inamabbas OP
Created 2d
Replies 2
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Oldest model of 5.5 with codex is deprecated by chatgpt but I only see 5.5 as the highest available model selectable in the dropdown in intelligence settings in Xcode when selecting codex

I have the ChatGPT pro account and login to codex in xcode via email/password and not the API key

I have already tried login out, quitting xcode, removing codex agent and reinstalling it, so far nothing works

Replies  2
Boosts  0
Views  61
Participants  2
inamabbas OP
2d

See the screenshot. I get error "Codex encountered an error: The 'gpt-5.5' model is not supported when using Codex with a ChatGPT account."

Bandle OP
11h

I am unsure of what version of Xcode you are using but I had this issue and updating Xcode to 27.1 fixed it.

I updated to 27.1, reinstalled Codex and started a new conversation. Now it is working again.

Codex GPT-5.5 got deprecated, no other models selectable in xcode
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