Claude Opus 4.7
ECI#30
157Claude Opus 4.7 is a closed-weights model from Anthropic, released April 16, 2026. It has an ECI score of 157 and ranks 30th of 240 tracked models. At the time of its release, it ranked 3rd of 176 tracked models.
Claude Opus 4.7 vs select alternatives
| Domain | Benchmark | Claude Opus 4.7 | |||
|---|---|---|---|---|---|
ECI scoreBest score 173 | 157 | 156 | 160 | 156 | |
| Ranking | #30 | #37 | #19 | #38 | |
| Games | Chess PuzzlesBest score 79% | ||||
Mystery Game PuzzlesBest score 90% | |||||
Earthborne Rangers (EBR-bench)Best score 90% | |||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 95% | ||||
FrontierMath Tier 4 (v2)Best score 100% | |||||
| Multimodal | Furniture Assembly BenchmarkBest score 90% | ||||
| Software engineering | SWE-bench VerifiedBest score 83% | ||||
MirrorCodeBest score 98% | |||||
| World knowledge | SimpleQA VerifiedBest score 94% |
