GPT 5.4 Performance degradation

Resolved 💬 1 comment Opened Apr 3, 2026 by aviy009 Closed Apr 3, 2026

What version of Codex CLI is running?

0.118.0

What subscription do you have?

plus

Which model were you using?

gpt-5.4-codex

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What terminal emulator and version are you using (if applicable)?

wsl

What issue are you seeing?

The model performace degragding, missing easy bugs and being lazy..

see thread ID 019d549b-fb18-7543-9c15-bc0ddc10bae6

What steps can reproduce the bug?

Uploaded thread: 019d549b-fb18-7543-9c15-bc0ddc10bae6

What is the expected behavior?

_No response_

Additional information

_No response_

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