Codex Performance decline
Resolved 💬 2 comments Opened Oct 14, 2025 by JonasTinz Closed Oct 16, 2025
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
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_
2 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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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.