Misclassified reasoning_effort 400 errors in agent
Cluster 100536 · agent. Data as of
1 open item. Fix merged in #115736 on 19 Sep 2026. Check it covers your case.
The short answer
- Known?
- Yes. 4 related items grouped here, 1 issue already closed.
- Fix event
- A fix was merged to main in PR #115736. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
resolved, deciding PR #115736. That is separate from the fix event. - Still open
- 0 issues and 1 PR.
These issues and fixes address a bug where invalid reasoning_effort parameter 400 errors are incorrectly classified as context overflow, causing unintended compression or failure instead of proper error recovery.
Open issues0
Open PRs1
- PR#100550fix(agent): preserve invalid reasoning effort errors without compression
Fixes on record
-
#115736 fix(agent): enum-style and structured reasoning_effort 400s recover instead of failing or compressing (#115277, #100536, salvage #115281)
files:
agent/chat_completion_helpers.py,agent/error_classifier.py,agent/turn_recovery.py,tests/agent/test_auxiliary_parameter_rung_chaining.py,tests/agent/test_error_classifier.py,tests/agent/test_reasoning_disable_recovery.py
1 PR closed without merging
From the close comments: other 1
- #100596 fix(agent): reasoning-effort validation 400s are format errors, not context overflow · other
Closed issues · 1
- Closed#100536[Bug]: custom Responses `invalid_reasoning_effort` 400 is misclassified as context_overflow, triggering bogus compression
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structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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
0.50: 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
- #115736
- Closed issues
- 1
- Attempts
- 1 PR closed without merging
- Fix link checked
- 19 Sep 2026