Mistral AI’s Leanstral 1.5 model is a game-changer for formal verification in math and code, achieving perfect scores on some benchmarks and catching real bugs in open-source repositories. The model’s performance is impressive, solving complex math problems and identifying previously unknown issues in code. This technology has the potential to significantly improve the accuracy and reliability of software and mathematical proofs. Why it matters: the success of Leanstral 1.5 could pave the way for more widespread adoption of AI-powered formal verification in industries where precision is paramount.