Leanstral - Mistral AI

1 min read Original article ↗

Cat

March 16, 2026

v26.03

Our first open-source code agent designed for Lean 4, built for formal proof engineering in realistic repositories. 119B parameters with 6.5B active.

Speed

Performance

Modalities

Context

256k

Price

$0

Speed

Performance

Modalities

Context

256k

Price

$0