OSWorld 2.1 (strict pass rate)

Strict pass rate on the same tasks.

The best 3 · 3 models tested

Top 3 · best setting per model · 3 models, 3 results (0 independent)

Measured by independent testersIndependent Reported by the makerVendor-reported

OSWorld 2.1 (strict pass rate) leaderboard
				Thinking levelSetting
1	Claude Opus 5.5	Anthropic	48.7%	Maxadaptive thinking, effort=max	Maker's own figureVendor-reportedAnthropic ↗	—	22 Sep 2026
2	Claude Fable 5.1	Anthropic	42.8%	Maxadaptive thinking, effort=max	Maker's own figureVendor-reportedAnthropic ↗	—	22 Sep 2026
3	Claude Opus 5	Anthropic	37.2%	Maxadaptive thinking, effort=max	Maker's own figureVendor-reportedAnthropic ↗	—	22 Sep 2026