Mistral Medium 3.5
ECI#106
141Mistral Medium 3.5 is an open-weights model from Mistral AI, released April 28, 2026. It has an ECI score of 141 and ranks 106th of 253 tracked models. At the time of its release, it ranked 66th of 213 tracked models.
Mistral Medium 3.5 vs select alternatives
| Domain | Benchmark | Mistral Medium 3.5 | |||
|---|---|---|---|---|---|
ECI scoreBest score 167 | 141 | 134 | 142 | 144 | |
| Ranking | #106 | #142 | #103 | #90 | |
| Conceptual reasoning | LMCABest score 68.2 | 26.1 | — | 29.7 | 29.7 |
DTBenchBest score 99% | |||||
| Science | CritPtBest score 32% | ||||
SciCodeBest score 67% | |||||
Surface Evolver BenchBest score 95% | |||||
| Software engineering | Text Arena (Coding)Best score 1820 | 1265 | — | 1361 | 1250 |
ALE-BenchBest score 2951 | 764 | — | 927 | — | |
WeirdML (v2)Best score 94% |
