AsOf

OpenAI · featurexhigh reasoning effort level

validasserted
Valid from
2025-12-11
Valid until
still holds
Published
2025-12-11
Recorded by AsOf
2026-10-31
Checked
2026-10-31 · its source page states the value and the date
Confidence
0.70

Sources

“What's new in 5.2 is a new xhigh reasoning effort level, concise reasoning summaries, and new context management using compaction.”— what the page says, read 2026-10-31