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Claude 4.5 Haiku (Reasoning) vs o3-mini
Anthropic vs OpenAI — side-by-side benchmark comparison
| Claude 4.5 Haiku (Reasoning) | o3-mini | |
|---|---|---|
| Intelligence Index | 37.1 | 25.9 |
| Coding Index | 32.6 | 17.9 |
| Math Index | 83.7 | — |
| Output speed (tok/s) | 142.2 | 188.5 |
| Blended price ($/1M) | $2.19 | $1.93 |
| Time to first token (s) | 10.48s | 6.08s |
| aime | — | 77.0% |
| aime 25 | 83.7% | — |
| artificial analysis coding index | 32.60 | 17.90 |
| artificial analysis intelligence index | 37.10 | 25.90 |
| artificial analysis math index | 83.70 | — |
| gpqa | 67.2% | 74.8% |
| hle | 9.7% | 8.7% |
| ifbench | 54.3% | — |
| lcr | 70.3% | — |
| livecodebench | 61.5% | 71.7% |
| math 500 | — | 97.3% |
| mmlu pro | 76.0% | 79.1% |
| scicode | 43.3% | 39.9% |
| tau2 | 54.7% | 28.7% |
| terminalbench hard | 27.3% | 6.8% |
Benchmark data from Artificial Analysis.