Qwen3.5 397B-A17B
ECI#59
147Qwen3.5 397B-A17B is an open-weights model from Alibaba, released February 13, 2026. It has an ECI score of 147 and ranks 59th of 249 tracked models. At the time of its release, it ranked 13th of 184 tracked models.
Qwen3.5 397B-A17B vs select alternatives
| Domain | Benchmark | Qwen3.5 397B-A17B | |||
|---|---|---|---|---|---|
ECI scoreBest score 166 | 147 | 144 | 148 | 146 | |
| Ranking | #59 | #85 | #55 | #70 | |
| Conceptual reasoning | LMCABest score 63.3 | 37.9 | 29.3 | — | — |
DTBenchBest score 98% | |||||
| Games | Chess PuzzlesBest score 72% | ||||
Mystery Game PuzzlesBest score 84% | |||||
| Mathematics | OTIS Mock AIME 2024-2025Best score 100% | ||||
| Science | GPQA DiamondBest score 96% |
