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Mistral Releases Leanstral 1.5: Saturates miniF2F at 100% for Formal Verification

Mistral releases Leanstral 1.5 under Apache 2.0, achieving 100% on the miniF2F benchmark and establishing state-of-the-art performance in Lean 4 formal verification for mathematical proofs.

Thursday July 2, 2026
Mistral Releases Leanstral 1.5: Saturates miniF2F at 100% for Formal Verification

Summary

Mistral releases Leanstral 1.5 under Apache 2.0, achieving 100% on the miniF2F benchmark and establishing state-of-the-art performance in Lean 4 formal verification for mathematical proofs.

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Q: What is this story about? A: Mistral releases Leanstral 1.5 under Apache 2.0, achieving 100% on the miniF2F benchmark and establishing state-of-the-art performance in Lean 4 formal verification for mathematical proofs…

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