OSWorld 2.0 Strict Pass Rate (Mythos 5.1 System Card): leaderboard
Metric: Strict Pass Rate (%). Source: www-cdn.anthropic.com. 3 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Fable 5.1 (Max) | 41.7 |
| 2 | Claude Opus 5 (Max) | 39.6 |
| 3 | Claude Fable 5 (Max) | 36.1 |
Interactive version: theaggregate.ai/benchmark?slug=osworld-2-0-strict-pass-rate-mythos-5-1-system-card · How It Works · Data refreshed daily, snapshot 2026-09-19.