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gpt-oss-20B (high) vs Claude 4.1 Opus (Non-reasoning)
OpenAI vs Anthropic — side-by-side benchmark comparison
| gpt-oss-20B (high) | Claude 4.1 Opus (Non-reasoning) | |
|---|---|---|
| Intelligence Index | 24.5 | 36.0 |
| Coding Index | 18.5 | — |
| Math Index | 89.3 | — |
| Output speed (tok/s) | 267.0 | 44.7 |
| Blended price ($/1M) | $0.09 | $32.81 |
| Time to first token (s) | 0.42s | 1.63s |
| aime | — | — |
| aime 25 | 89.3% | — |
| artificial analysis coding index | 18.50 | — |
| artificial analysis intelligence index | 24.50 | 36.00 |
| artificial analysis math index | 89.30 | — |
| gpqa | 68.8% | — |
| hle | 9.8% | — |
| ifbench | 65.1% | — |
| lcr | 30.7% | — |
| livecodebench | 77.7% | — |
| math 500 | — | — |
| mmlu pro | 74.8% | — |
| scicode | 34.4% | — |
| tau2 | 60.2% | — |
| terminalbench hard | 10.6% | — |
Benchmark data from Artificial Analysis.