Qwen3.5-Flash scores 22.0 on the Respan Index (#87), ahead of Grok 4.1 Fast Reasoning at 21.0 (#89). They split the 4 benchmarks both report evenly. Qwen3.5-Flash is 1.6x cheaper per token at list price. Grok 4.1 Fast Reasoning has the larger context window (2M tokens).
| Benchmark | Grok 4.1 Fast Reasoning | Qwen3.5-Flash |
|---|---|---|
| SAGE (Vals AI) | 31.3% | 42.5% |
| Vending-Bench 2 (Andon Labs) | 1106.63 | 462.69 |
| LMArena Elo | 1430 | 1398 |
| LMArena WebDev (LMArena) | 1241 | 1243 |
Higher is better. Each score links to where it was published.
* Estimated: no published scores in that category. How the Respan Index works