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Mistral AI·· 2026-03-17AI score59

Leanstral: Open-Source foundation for trustworthy vibe-coding

Leanstral: Open-Source foundation for trustworthy vibe-coding

AI introduction

Mistral released Leanstral-120B-A6B (6B activated parameters), its first open-source coding agent for Lean 4 formal proof, with weights under the Apache 2.0 license and accessible via Mistral Vibe and the free labs-leanstral-2603 API endpoint.

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Source: Mistral AI · mistral.ai