Kimi K3
ECI#11
158Kimi K3 is an open-weights model from Moonshot, released July 16, 2026. It has an ECI score of 158 and ranks 11th of 249 tracked models. At the time of its release, it ranked 8th of 233 tracked models.
Kimi K3 vs select alternatives
| Domain | Benchmark | Kimi K3 | |||
|---|---|---|---|---|---|
ECI scoreBest score 166 | 158 | 151 | 157 | 158 | |
| Ranking | #11 | #42 | #12 | #10 | |
| Conceptual reasoning | ARC-AGI-2Best score 95% | ||||
ARC-AGI-1Best score 99% | |||||
| Games | Chess PuzzlesBest score 72% | ||||
Mystery Game PuzzlesBest score 84% | |||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 94% | ||||
FrontierMath Tier 4 (v2)Best score 98% | |||||
OTIS Mock AIME 2024-2025Best score 100% | |||||
| Science | GPQA DiamondBest score 96% | ||||
| World knowledge | SimpleQA VerifiedBest score 76% |
