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Codex task error #51242

Description

@kongbai2026

What version of the Codex App are you using (From “About Codex” dialog)?

26.909.11814

What subscription do you have?

plus

What platform is your computer?

win11

What issue are you seeing?

Windows, Codex App 26.930.51102, ChatGPT login (auth_mode=chatgpt, no relay/API key).

Exactly matches the report: all GPT-6 family models fail with invalid_prompt on
trivial prompts, while GPT-5.6 works in the SAME session and the SAME thread.

Attributed from local rollout logs (8 failures, 0 on 5.x):
gpt-6.1-sol x4
gpt-6-luna x3
gpt-6-astra x1
gpt-5.6-sol / gpt-5.6-luna: 0 failures

Failing turn ids: 01a10ee3-117c-7701-a665-41ce53c92e13,
01a10f03-7e5f-7f83-8637-8bdaa3b2049c
Switching the same thread to gpt-5.6-sol succeeds, so context is not the trigger.

What steps can reproduce the bug?

Windows, Codex App 26.930.51102, ChatGPT login (auth_mode=chatgpt, no relay/API key).

Exactly matches the report: all GPT-6 family models fail with invalid_prompt on
trivial prompts, while GPT-5.6 works in the SAME session and the SAME thread.

Attributed from local rollout logs (8 failures, 0 on 5.x):
gpt-6.1-sol x4
gpt-6-luna x3
gpt-6-astra x1
gpt-5.6-sol / gpt-5.6-luna: 0 failures

Failing turn ids: 01a10ee3-117c-7701-a665-41ce53c92e13,
01a10f03-7e5f-7f83-8637-8bdaa3b2049c
Switching the same thread to gpt-5.6-sol succeeds, so context is not the trigger.

What is the expected behavior?

No response

Additional information

No response

Activity

  1. added
    appIssues related to the Codex desktop app
    on Oct 6, 2026
  2. added
    bugSomething isn't working
    windows-osIssues related to Codex on Windows systems
    on Oct 6, 2026
  3. changed the title [-]Codex任务报错[/-] [+]Codex task error[/+] on Oct 6, 2026
  4. github-actions commented on Oct 6, 2026

    @github-actions
    Contributor

    English translation:

    What version of the Codex App are you using (From “About Codex” dialog)?

    26.909.11814

    What subscription do you have?

    plus

    What platform is your computer?

    win11

    What issue are you seeing?

    Windows, Codex App 26.930.51102, ChatGPT login (auth_mode=chatgpt, no relay/API key).

    Exactly matches the report: all GPT-6 family models fail with invalid_prompt on
    trivial prompts, while GPT-5.6 works in the SAME session and the SAME thread.

    Attributed from local rollout logs (8 failures, 0 on 5.x):
    gpt-6.1-sol x4
    gpt-6-luna x3
    gpt-6-astra x1
    gpt-5.6-sol / gpt-5.6-luna: 0 failures

    Failing turn ids: 01a10ee3-117c-7701-a665-41ce53c92e13,
    01a10f03-7e5f-7f83-8637-8bdaa3b2049c
    Switching the same thread to gpt-5.6-sol succeeds, so context is not the trigger.

    What steps can reproduce the bug?

    Windows, Codex App 26.930.51102, ChatGPT login (auth_mode=chatgpt, no relay/API key).

    Exactly matches the report: all GPT-6 family models fail with invalid_prompt on
    trivial prompts, while GPT-5.6 works in the SAME session and the SAME thread.

    Attributed from local rollout logs (8 failures, 0 on 5.x):
    gpt-6.1-sol x4
    gpt-6-luna x3
    gpt-6-astra x1
    gpt-5.6-sol / gpt-5.6-luna: 0 failures

    Failing turn ids: 01a10ee3-117c-7701-a665-41ce53c92e13,
    01a10f03-7e5f-7f83-8637-8bdaa3b2049c
    Switching the same thread to gpt-5.6-sol succeeds, so context is not the trigger.

    What is the expected behavior?

    No response

    Additional information

    No response

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