Toolathlon Pass^3 (Anthropic Internal Harness): leaderboard
Metric: Pass^3 (%). Source: www-cdn.anthropic.com. 9 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Fable 5 (Max) | 55.6 |
| 2 | Claude Opus 4.7 (Max) | 52.8 |
| 3 | Claude Opus 4.8 (Max) | 48.1 |
| 4 | Claude Opus 4.6 (Max) | 47.2 |
| 5 | Claude Sonnet 5 (Max) | 40.7 |
| 6 | Claude Sonnet 4.6 (Max) | 38 |
Interactive version: theaggregate.ai/benchmark?slug=toolathlon-pass-pow-3-anthropic-internal-harness · How It Works · Data refreshed daily, snapshot 2026-09-19.