The Codex /models catalog advertises 272K for the gpt-5.6 (sol/terra/luna)
and gpt-5.4 slugs, but the backend actually accepts ~371K input tokens
(verified live against chatgpt.com/backend-api/codex/responses, Aug 16 2026:
~371K completed OK on all four slugs; ~382K+ rejected with
context_length_exceeded). 350K keeps ~22K margin under the observed ~372K
enforcement.
The bump applies ONLY when the resolved value is exactly the known-stale
272,000 advertisement — any other advertised value (higher or lower) is
trusted as a real server-side change, so a future catalog correction
deactivates the override automatically. gpt-5.5 and gpt-5.4-mini both
genuinely enforce 272K (rejected 360K live) and are excluded.
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