Mistral Medium 3.5
ECI#114
142Mistral Medium 3.5 is an open-weights model from Mistral AI, released April 28, 2026. It has an ECI score of 142 and ranks 114th of 240 tracked models. At the time of its release, it ranked 60th of 186 tracked models.
Mistral Medium 3.5 vs select alternatives
| Domain | Benchmark | Mistral Medium 3.5 | |||
|---|---|---|---|---|---|
ECI scoreBest score 173 | 142 | 133 | 142 | 144 | |
| Ranking | #114 | #151 | #113 | #101 | |
| Conceptual reasoning | LMCABest score 70.6 | 26.1 | — | 29.7 | 29.7 |
DTBenchBest score 99% | |||||
| Science | CritPt v1Best score 36% | ||||
SciCodeBest score 68% | |||||
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% |
