Kimi K2.5
ECI#55
148Kimi K2.5 is an open-weights model from Moonshot, released January 27, 2026. It has an ECI score of 148 and ranks 55th of 249 tracked models. At the time of its release, it ranked 9th of 179 tracked models.
Kimi K2.5 vs select alternatives
| Domain | Benchmark | Kimi K2.5 | |||
|---|---|---|---|---|---|
ECI scoreBest score 166 | 148 | 146 | 149 | 147 | |
| Ranking | #55 | #73 | #53 | #62 | |
| Agent | Vending-Bench 2Best score $11,182 | $1,198 | — | — | $1 |
| Conceptual reasoning | ARC-AGI-2Best score 95% | ||||
ARC-AGI-1Best score 99% | |||||
| Games | Chess PuzzlesBest score 72% | ||||
| Mathematics | OTIS Mock AIME 2024-2025Best score 100% | ||||
| Science | GPQA DiamondBest score 96% | ||||
| Software engineering | Text Arena (Coding)Best score 1797 | 1436 | 1337 | 1397 | 1399 |
Terminal-Bench 2.0Best score 85% | |||||
| World knowledge | SimpleQA VerifiedBest score 76% |
