unexpected status 404 Not Found: The model `gpt-5.5` does not exist or you do not have access to it
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app
bug
connectivity
- Dominant language
- Rust
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- 125k
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Description
What version of the Codex App are you using (From “About Codex” dialog)?
Version 26.903.71938
What subscription do you have?
Plus
What platform is your computer?
No response
What issue are you seeing?
unexpected status 404 Not Found: The model gpt-5.5 does not exist or you do not have access to it. For about an hour.
5.6 works.
What steps can reproduce the bug?
Select 5.5 Mediun and ask "are you live?"
What is the expected behavior?
No response
Additional information
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the failure in Codex App version 26.903.71938 by selecting 5.5 Medium and asking “are you live?”, then compare it with 5.6. Trace the request or model-selection path used for these choices and determine why gpt-5.5 returns 404 while 5.6 works; done means the reported model can be selected and used successfully or the failure is clearly diagnosed.
Written by the indexing model from the issue text.
Assessment
- Domain
- ai
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100