severe degradation in intelligence

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_