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Claude 4.1 Opus (Reasoning) vs Claude Opus 4.5 (Reasoning)
Anthropic vs Anthropic — side-by-side benchmark comparison
| Claude 4.1 Opus (Reasoning) | Claude Opus 4.5 (Reasoning) | |
|---|---|---|
| Intelligence Index | 42.0 | 49.7 |
| Coding Index | 36.5 | 47.8 |
| Math Index | 80.3 | 91.3 |
| Output speed (tok/s) | 44.5 | 73.2 |
| Blended price ($/1M) | $32.81 | $10.94 |
| Time to first token (s) | 8.55s | 11.69s |
| aime | — | — |
| aime 25 | 80.3% | 91.3% |
| artificial analysis coding index | 36.50 | 47.80 |
| artificial analysis intelligence index | 42.00 | 49.70 |
| artificial analysis math index | 80.30 | 91.30 |
| gpqa | 80.9% | 86.6% |
| hle | 11.9% | 28.4% |
| ifbench | 55.4% | 58.0% |
| lcr | 66.3% | 74.0% |
| livecodebench | 65.4% | 87.1% |
| math 500 | — | — |
| mmlu pro | 88.0% | 89.5% |
| scicode | 40.9% | 49.5% |
| tau2 | 71.4% | 89.5% |
| terminalbench hard | 34.3% | 47.0% |
Benchmark data from Artificial Analysis.