Clamp reasoning effort for non-gpt-5.6 providers
Cluster 80242 · agent. Data as of
Nothing open on GitHub. Fix merged in #90330 on 19 Aug 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 #90330. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
unresolved. That is separate from the fix event. - Still open
- Nothing open on GitHub.
These issues and fixes address a crash caused by unsupported 'ultra' or 'max' reasoning effort values being sent to non-gpt-5.6 model providers, returning HTTP 422 errors. The proposed fix clamps those values down to 'high' for incompatible providers.
Open issues0
Open PRs0
Fixes on record
-
#90330 fix: reasoning effort 'ultra' no longer 400s on non-Anthropic wires (#89503 class, salvage #89509)
files:
agent/auxiliary_client.py,agent/transports/chat_completions.py,agent/transports/codex.py,plugins/model-providers/copilot/__init__.py,plugins/model-providers/custom/__init__.py,tests/agent/test_reasoning_effort_wire_translation.py,tests/agent/transports/test_reasoning_effort_sibling_sites.py
2 PRs closed without merging
From the close comments: superseded by another PR 2
Closed issues · 1
- Closed#80242Custom providers crash with /reasoning ultra (HTTP 422: unknown variant)
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structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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
- #90330
- Closed issues
- 1
- Attempts
- 2 PRs closed without merging
- Fix link checked
- 19 Aug 2026