Codex 5 has reduced intelligence
Resolved 💬 2 comments Opened Nov 17, 2025 by alixiaodi Closed Nov 17, 2025
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
What version of Codex is running?
0.5.39
What subscription do you have?
pro
Which model were you using?
codex5 high
What platform is your computer?
windows
What issue are you seeing?
The current codex5 is a fool, asking him to modify a problem won't solve anything. Using the same claude4,5 can completely solve it. Compared to last week's codex5, it feels much worse these days
What steps can reproduce the bug?
1
What is the expected behavior?
1
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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Thanks for the bug report, but this isn't very actionable. In the future, if you see model behavior that you'd like to report, please use the recently-added
/feedbackcommand in the CLI. That will provide us with additional details including logs and conversation text. We're working to add support for/feedbackin the IDE extension.