Qwen3.5 397B-A17B
ECI#57
147Qwen3.5 397B-A17B is an open-weights model from Alibaba, released February 13, 2026. It has an ECI score of 147 and ranks 57th of 247 tracked models. At the time of its release, it ranked 13th of 184 tracked models. At $0.39/Mtok for input tokens and $2.34/Mtok for output tokens, it is less expensive per token than similarly-capable models.
Input price$0.39 / 1M tokens
Output price$2.34 / 1M tokens
Parameters4.0e11
Training computeUnknown
Qwen3.5 397B-A17B vs select alternatives
Reasoning
| Domain | Benchmark | Qwen3.5 397B-A17B | |||
|---|---|---|---|---|---|
ECI scoreBest score 167 | 147 | 144 | 148 | 146 | |
| Ranking | #57 | #83 | #53 | #68 | |
| Conceptual reasoning | LMCABest score 63.3 | 37.9 | 29.3 | — | — |
DTBenchBest score 98.4% | |||||
| Games | Chess PuzzlesBest score 72.0% | ||||
Mystery Game PuzzlesBest score 84.0% | |||||
| Mathematics | OTIS Mock AIME 2024-2025Best score 100.0% | ||||
| Science | GPQA DiamondBest score 95.8% |
