Blueprint-Bench 2 (Fable/Mythos): leaderboard
Metric: Score (0-1). Source: www-cdn.anthropic.com. 6 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Fable 5 | 0.39 |
| 2 | Claude Mythos 5 | 0.39 |
| 3 | GPT-5.5 | 0.36 |
| 4 | Gemini 3.5 Flash | 0.34 |
| 5 | Gemini 3.1 Pro | 0.27 |
| 6 | Claude Opus 4.8 | 0.14 |
Interactive version: theaggregate.ai/benchmark?slug=blueprint-bench-2-fable-mythos · How It Works · Data refreshed daily, snapshot 2026-09-05.