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Claude 4.5 Haiku (Reasoning) vs Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)
Anthropic vs Anthropic — side-by-side benchmark comparison
| Claude 4.5 Haiku (Reasoning) | Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) | |
|---|---|---|
| Intelligence Index | 37.1 | 51.7 |
| Coding Index | 32.6 | 50.9 |
| Math Index | 83.7 | — |
| Output speed (tok/s) | 142.2 | 68.2 |
| Blended price ($/1M) | $2.19 | $6.56 |
| Time to first token (s) | 10.48s | 55.35s |
| aime | — | — |
| aime 25 | 83.7% | — |
| artificial analysis coding index | 32.60 | 50.90 |
| artificial analysis intelligence index | 37.10 | 51.70 |
| artificial analysis math index | 83.70 | — |
| gpqa | 67.2% | 87.5% |
| hle | 9.7% | 30.0% |
| ifbench | 54.3% | 56.6% |
| lcr | 70.3% | 70.7% |
| livecodebench | 61.5% | — |
| math 500 | — | — |
| mmlu pro | 76.0% | — |
| scicode | 43.3% | 46.8% |
| tau2 | 54.7% | 75.7% |
| terminalbench hard | 27.3% | 53.0% |
Benchmark data from Artificial Analysis.