Claude Opus 4.1 scores 29.0 on the Respan Index (#67), ahead of MiMo-V2.5 at 28.8 (#68). MiMo-V2.5 leads on 2 of the 3 benchmarks both report. MiMo-V2.5 has the larger context window (1M tokens).
| Benchmark | Claude Opus 4.1 | MiMo-V2.5 |
|---|---|---|
| SAGE (Vals AI) | 31.4% | 43.3% |
| LMArena Elo | 1450 | 1427 |
| LMArena WebDev (LMArena) | 1389 | 1438 |
Higher is better. Each score links to where it was published.
* Estimated: no published scores in that category. How the Respan Index works