Hy4 preview scores 46.6 on the Respan Index (#31), ahead of Muse Spark 1.1 at 45.1 (#34). Hy4 preview leads on 3 of the 4 benchmarks both report. Hy4 preview is 1.6x cheaper per token at list price. Muse Spark 1.1 has the larger context window (1.0M tokens).
| Benchmark | Hy4 preview | Muse Spark 1.1 |
|---|---|---|
| LMArena Agent (LMArena) | 0.0395 | -0.0488 |
| LMArena WebDev (LMArena) | 1633 | 1542 |
| Terminal-Bench 2.1 | 85.4% | 80% |
| Toolathlon-Verified | 74.1% | 75.6% |
Higher is better. Each score links to where it was published.
* Estimated: no published scores in that category. How the Respan Index works