Qwen3.5-9B
ECI#121
139Qwen3.5-9B is an open-weights model from Alibaba, released February 24, 2026. It has an ECI score of 139 and ranks 121st of 257 tracked models. At the time of its release, it ranked 53rd of 189 tracked models.
Qwen3.5-9B vs select alternatives
| Domain | Benchmark | Qwen3.5-9B | |||
|---|---|---|---|---|---|
ECI scoreBest score 167 | 139 | 139 | 140 | 142 | |
| Ranking | #121 | #123 | #120 | #107 | |
| Conceptual reasoning | LMCABest score 68.2 | 24.5 | 25.0 | 19.5 | 29.7 |
DTBenchBest score 99% | |||||
| Games | Chess PuzzlesBest score 72% | ||||
| Mathematics | OTIS Mock AIME 2024-2025Best score 100% | ||||
| Science | CritPtBest score 32% | ||||
SciCodeBest score 67% | |||||
GPQA DiamondBest score 96% |
