severe degradation in intelligence
Resolved 💬 2 comments Opened Nov 25, 2025 by nnabwn0-oss Closed Nov 25, 2025
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
What version of Codex is running?
codex-cli 0.63.0
What subscription do you have?
gpt-5.1-codex-max Extra high
Which model were you using?
_No response_
What platform is your computer?
_No response_
What issue are you seeing?
Today I used Codex-Max and felt a severe degradation in intelligence. I suspect the issue is caused by an official move by OpenAI to use a low-precision quantized model. The performance was good just a few days ago, so I am very certain that OpenAI is having problems, making such an incredibly difficult/unbelievable mistake, just like Claude. I will be switching to Gemini.
What steps can reproduce the bug?
.
What is the expected behavior?
_No response_
Additional information
_No response_
2 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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