Claude Fable 5 (Medium) — benchmark results
Provider: Anthropic. Released 2026-06-09. Access: API.
Unified ELO 2028 ± 45, rank #12 of 1844 rated models, from 7 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| LisanBench | 0.89 | Mean Path Length / Current Maximum | 98 |
| Epoch AI - ECI | 161.53 | ECI Score | 97.3 |
| Sycophancy (Lechmazur) | 0.5 | Sycophancy rate % (lower is better) | 95.2 |
| ARC-AGI-2 | 82.5 | Accuracy (%) | 91.8 |
| ARC-AGI-1 | 92.5 | Accuracy (%) | 85.8 |
| CursorBench 3.1 | 65.2 | Score (%) | 82.9 |
| Vending-Bench 2 | 4339.81 | Money Balance ($) | 52.6 |
Interactive version: theaggregate.ai/model?slug=claude-fable-5-medium · How It Works · Data refreshed daily, snapshot 2026-08-06.