Codex Performance decline

[JonasTinz]

What version of Codex is running?

newest

Which model were you using?

gpt-5-codex medium

What platform is your computer?

windows

What steps can reproduce the bug?

codex perfromace way worse today than the last days making a lot of errors it normally does not

What is the expected behavior?

the model solving the problems correctly

What do you see instead?

code that does not work

Additional information

No response

[github-actions]

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

• severe degradation in Codex CLI #4981
• gpt-5-codex high is far worse than gpt-5 high on complex problems #3826

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[tibo-openai]

Apologies, performance can fluctuate depending on the task. Going to close this right now as we're always working on improvements and windows performance should continue to improve here over time.