Kimi K3 scores 50.6 on the Respan Index (#21), ahead of Qwen3.8-Flash-Next at 42.7 (#39). Kimi K3 leads on 8 of the 11 benchmarks both report. Kimi K3 has the larger context window (1.0M tokens).
* Estimated: no published scores in that category. How the Respan Index works
| 71.4% |
| 77.1% |
| LiveBench Language (LiveBench) | 85.5% | 74.6% |
| LiveBench Mathematics (LiveBench) | 84.4% | 85.8% |
| LiveBench Reasoning (LiveBench) | 90.7% | 87.4% |
| LMArena Agent (LMArena) | 0.0418 | -0.0073 |
| LMArena WebDev (LMArena) | 1658 | 1638 |
| JobBench | 54.3% | 55.7% |
Higher is better. Each score links to where it was published.