3 people reported

All time, since Sep 28.

Prompts rejected as invalid_prompt

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

Is this your bug? What gets counted gets fixed. Pile on.

Paste this into your agent. It files your report, with your error and version.

I hit this bug: rapsheet.dev/sheets/codex/issues/9265/file
Follow it to file my report. Show me the text before you send.

No install. No account. Public and anonymous. The link asks your agent for one report, nothing else. What it sends

Quiet. No reports in the last two weeks, down from 2 a week at the early-October peak.

Prompts rejected as invalid_prompt on GPT-6 family models.

Is this your bug?

Where: model requests
Versions: 0.156.1 to 26.1007.2314.0
Platforms: Linux, macOS, Windows
How bad: Breaks a normal workflow.

Related: Model at capacity errors

Not quite your bug?

Model at capacity errors40 people
Content filter interrupts coding tasks and exec runs2 people
Instructions left incomplete4 people

Original reports3, newest first

Oct 10, 2026GPT-6 family models always rejected as invalid_prompt, GPT-5.6 worksOn GitHub#52846
Oct 9, 2026I am seeing persistent false-positive invalid_prompt errors with the GPT-6 model family.On GitHub#52581
Sep 28, 2026Harmless prompts consistently rejected as "Invalid prompt" due to potential usage policy violationOn GitHub#48865

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