gpt-5.6-sol' model is not supported and no usage limit

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#36,082 5 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
38/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Quiet
Tech stack
rust
Domain
backend

Research direction

No source file, test, or code entry point is named. Start by reproducing the issue after an account plan upgrade and trace the handling of the “gpt-5.6-sol” unsupported-model and usage-limit responses; done means the upgraded account can use Codex without the erroneous restriction.

Written by the indexing model from the issue text.

Description

app bug rate-limits
What version of the Codex App are you using (From “About Codex” dialog)?

26.721.81911

What subscription do you have?

PRO $200

What platform is your computer?

Darwin 25.5.0 arm64 arm

What issue are you seeing?

I see {"detail":"The 'gpt-5.6-sol' model is not supported when using Codex with a ChatGPT account."} and You've hit your usage limit. Add credits to continue, or try again at 6 Aug 2026, 08:15 on an account that just got its plan upgraded. I can't use the Codex app for nothing, the usage is 100% available.

Image
What steps can reproduce the bug?

Account plan upgrade

What is the expected behavior?

No response

Additional information

No response

Dominant language
Rust
Stars
125k
Forks
19.5k
Avg merge
1m
Merged PRs (30d)
1k

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