Muse Spark 1.1 scores 45.1 on the Respan Index (#34), ahead of Claude Sonnet 5 at 44.2 (#35). They split the 18 benchmarks both report evenly. Muse Spark 1.1 is 2.0x cheaper per token at list price. Muse Spark 1.1 has the larger context window (1.0M tokens).
* Estimated: no published scores in that category. How the Respan Index works
| LiveBench Data Analysis (LiveBench) |
| 71.7% |
| 72.5% |
| LiveBench Instruction Following (LiveBench) | 63.9% | 69.6% |
| LiveBench Language (LiveBench) | 75% | 74.3% |
| LiveBench Mathematics (LiveBench) | 92.9% | 87.1% |
| LiveBench Reasoning (LiveBench) | 88.7% | 87.7% |
| SAGE (Vals AI) | 48.9% | 45.6% |
| SimpleQA Verified | 33.7% | 57.8% |
| Vending-Bench 2 (Andon Labs) | 6377.7 | 6520.48 |
| LMArena Agent (LMArena) | 0.044 | -0.0488 |
| LMArena Elo | 1462 | 1491 |
| LMArena Vision (LMArena) | 1265 | 1281 |
| LMArena WebDev (LMArena) | 1539 | 1542 |
| Toolathlon-Verified (HKUST) | 71.6% | 75.6% |
| Humanity's Last Exam (with tools) | 57.4% | 62.1% |
Higher is better. Each score links to where it was published.