Step 5 Preview scores 54.9 on the Respan Index (#12), ahead of Muse Spark 1.3 at 54.1 (#13). Muse Spark 1.3 leads on 4 of the 5 benchmarks both report. Step 5 Preview is 1.4x cheaper per token at list price. Muse Spark 1.3 has the larger context window (1.0M tokens).
* Estimated: no published scores in that category. How the Respan Index works
| LMArena WebDev (LMArena) |
| 1657 |
| 1570 |
Higher is better. Each score links to where it was published.