Mistral AI's Open-Source Mathematical Proof Tool: 119B Parameters Activate Only 6B, Problem-Solving Cost Is Just 1% of Competitors'
Leanstral 1.5, by Mistral AI, is a math formal proof model for Lean4 with 119B total parameters but only 6B active at inference. Fully open-source (Apache-2.0), it achieves 100% completion on miniF2F validation and test sets, and excels on PutnamBench.....