Anthropic · model
Claude Opus 5.5 (xhigh with fallback) benchmark scores
As of 2026-10-07, Claude Opus 5.5 (xhigh with fallback) (Anthropic) has measured scores on 6 benchmarks and estimated scores on 3 more.
| Benchmark | Score | Source |
|---|---|---|
| Terminal-Bench 2.1 | 88.2% | estimated ± 4.0 pp, medium confidence |
| Terminal-Bench 4.0 | 59.6% | measured |
| Terminal-Bench Science 0.1 | 61.9% | measured |
| GPQA Diamond | 95.4% | estimated ± 1.3 pp, high confidence |
| SciCode | 65.0% | measured |
| CritPt | 31.7% | measured |
| GDP.pdf | 29.1% | estimated ± 4.0 pp, high confidence |
| MMMU-Pro | 87.0% | measured |
| Humanity's Last Exam | 57.5% | measured |