SWE-bench Pro (Opus 5 & Mythos 5.1 System Cards): leaderboard
Metric: Resolved (%). Source: www-cdn.anthropic.com. 2 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Fable 5.1 (Max) | 81.2 |
| 2 | Claude Opus 5 (Max) | 79.2 |
Interactive version: theaggregate.ai/benchmark?slug=swe-bench-pro-opus-5-mythos-5-1-system-cards · How It Works · Data refreshed daily, snapshot 2026-09-19.