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GPT-5 nano (medium) vs Claude 4.1 Opus (Reasoning)
OpenAI vs Anthropic — side-by-side benchmark comparison
| GPT-5 nano (medium) | Claude 4.1 Opus (Reasoning) | |
|---|---|---|
| Intelligence Index | 25.9 | 42.0 |
| Coding Index | 22.9 | 36.5 |
| Math Index | 78.3 | 80.3 |
| Output speed (tok/s) | 171.9 | 44.5 |
| Blended price ($/1M) | $0.14 | $32.81 |
| Time to first token (s) | 43.05s | 8.55s |
| aime | — | — |
| aime 25 | 78.3% | 80.3% |
| artificial analysis coding index | 22.90 | 36.50 |
| artificial analysis intelligence index | 25.90 | 42.00 |
| artificial analysis math index | 78.30 | 80.30 |
| gpqa | 67.0% | 80.9% |
| hle | 7.6% | 11.9% |
| ifbench | 65.9% | 55.4% |
| lcr | 40.0% | 66.3% |
| livecodebench | 76.3% | 65.4% |
| math 500 | — | — |
| mmlu pro | 77.2% | 88.0% |
| scicode | 33.8% | 40.9% |
| tau2 | 30.4% | 71.4% |
| terminalbench hard | 17.4% | 34.3% |
Benchmark data from Artificial Analysis.