Claude Opus 4.6 (Medium) — benchmark results
Claude Opus 4.6 evaluated at the medium reasoning-effort setting. Provider: Anthropic. Released 2026-02-05. Access: API.
Unified ELO 2129 ± 131, rank #7 of 1776 rated models, from 7 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| MageBench S1 | 1747 | Rating | 100 |
| MageBench Season 1 | 1747 | Rating (self-reported) | 100 |
| Chess Bench LLM | 1403 | Lichess Rating | 87.9 |
| Epoch AI - ECI | 155.38 | ECI Score | 86.7 |
| DeepResearchBench | 53.24 | Average Score | 85.7 |
| InsanityBench | 10 | Total Score | 71.4 |
| GIM | 1.09 | IRT ability (theta) | 68.9 |
Interactive version: theaggregate.ai/model?slug=claude-opus-4-6-medium · How the rankings work · Data refreshed daily, snapshot 2026-07-22.