"Bad request" error

[atomical]

What version of Codex CLI is running?

0.94.0

What subscription do you have?

Pro

Which model were you using?

gpt-5.2 xhigh

What platform is your computer?

Darwin 25.1.0 arm64 arm

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

Terminal.app

What issue are you seeing?

{"detail":"Bad Request"}

This continues to happen after 30+ minutes when I send a prompt. I have 39% context left. It's unrecoverable and generates the same error if I send "continue."

thread ID: 019c2394-2e58-7eb0-98e7-978424cb4745

What steps can reproduce the bug?

Seems specific to a larger project that requires a lot of reasoning to move forward. I haven't seen it in other sessions.

What is the expected behavior?

No response

Additional information

No response

[github-actions]

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

• Constant "Bad Request" happening to me #10343

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[pardeike]

I understand the wish to not duplicate issues but I am having this issue and #10343 is closed. So here is my feedback on it. Current situation is hardly useable for longer tasks: #10343 (comment)

[pardeike]

Update. Here is a good example:

[ryanc-cf]

Getting {"detail":"Bad Request"} on almost every single request/reply. What the hell is causing this? Codex is almost unusable because this error shows up so often.

[etraut-openai]

@ryanc-cf, please use /feedback to upload your logs and session details and post your thread ID here. That will allow us to investigate.

[ryanc-cf]