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GPT-5.4 mini (xhigh) vs GPT-5.5 (high)
OpenAI vs OpenAI — side-by-side benchmark comparison
| GPT-5.4 mini (xhigh) | GPT-5.5 (high) | |
|---|---|---|
| Intelligence Index | 48.9 | 58.9 |
| Coding Index | 51.5 | 58.5 |
| Math Index | — | — |
| Output speed (tok/s) | 182.8 | 66.7 |
| Blended price ($/1M) | $1.69 | $11.25 |
| Time to first token (s) | 4.25s | 16.72s |
| aime | — | — |
| aime 25 | — | — |
| artificial analysis coding index | 51.50 | 58.50 |
| artificial analysis intelligence index | 48.90 | 58.90 |
| artificial analysis math index | — | — |
| gpqa | 87.5% | 93.2% |
| hle | 26.6% | 43.0% |
| ifbench | 73.3% | 71.6% |
| lcr | 69.3% | 73.3% |
| livecodebench | — | — |
| math 500 | — | — |
| mmlu pro | — | — |
| scicode | 49.9% | 55.9% |
| tau2 | 83.3% | 93.0% |
| terminalbench hard | 52.3% | 59.8% |
Benchmark data from Artificial Analysis.