Muse Spark scores 32.7 on the Respan Index (#61), ahead of GPT-5.1 at 32.4 (#62). Muse Spark leads on 4 of the 4 benchmarks both report.
| Benchmark | GPT-5.1 | Muse Spark |
|---|---|---|
| GPQA Diamond | 87.6% | 89.5% |
| OTIS Mock AIME 2024-2025 (Epoch AI) | 88.6% | 88.9% |
| LMArena Elo | 1423 | 1489 |
| LMArena Vision (LMArena) | 1251 | 1294 |
Higher is better. Each score links to where it was published.
* Estimated: no published scores in that category. How the Respan Index works