Codex idle watchdog kills long-reasoning streams early
Cluster 90449 · agent. Data as of
Nothing open on GitHub. Fix merged in #104520 on 6 Sep 2026. Check it covers your case.
The short answer
- Known?
- Yes. 3 related items grouped here, 1 issue already closed.
- Fix event
- A fix was merged to main in PR #104520. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
resolved, deciding PR #104520. That is separate from the fix event. - Still open
- Nothing open on GitHub.
A bug where the Codex event-stale watchdog timer fires before extended reasoning models produce their first content token, causing premature stream termination. The related items address deferring or adjusting the watchdog until actual progress is observed.
Open issues0
Open PRs0
Fixes on record
-
#104520 fix(agent): official Codex requests that reason before their first token are no longer killed by the idle watchdog (#90449, salvage #103710)
files:
agent/auxiliary_client.py,agent/chat_completion_helpers.py,agent/codex_runtime.py,contributors/emails/[email protected],tests/agent/test_aux_progress_streaming.py,tests/agent/test_codex_ttfb_watchdog.py
1 PR closed without merging
From the close comments: merged via another change 1
-
#103710 fix(agent): defer official Codex idle watchdog until progress · merged via another change →
3ac671d,#104520,#90449
Closed issues · 1
- Closed#90449Bug: Codex event-stale watchdog (60s) kills GPT-5.6 reasoning streams before first content token — scaled TTFB fix (#64594) insufficient for extended pre-thinking
How this cluster was grouped
-
Link evidence (
structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference. -
Pairwise link density
0.67: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36.1.00means every pair is linked.
Pick up a Lab task
Check whether a fix covers the open issues here, with your own agent. Bring back evidence for maintainers.
Open the LabAt a glance
- Subsystem
- agent
- Merged PRs
- #104520
- Closed issues
- 1
- Attempts
- 1 PR closed without merging
- Fix link checked
- 6 Sep 2026