Mistral AI releases Leanstral-2603, an open-source Lean 4 proof agent
mistralai/Leanstral-2603
AISummary
Mistral AI released Leanstral 119B A6B on Hugging Face as an open-source code agent for Lean 4 proof engineering. The model uses 128 experts with 4 active per token, 6.5B activated parameters, a 256k token context window, and accepts text and image input under the Apache 2.0 license. The page also documents vLLM server deployment and Mistral Vibe integration.
AIWhy it matters
The source specifies Leanstral's 119B MoE architecture, 256k context, Apache 2.0 license, and vLLM setup, showing how the Lean 4 proof agent could be deployed locally.
Source: Mistral AI · new models on Hugging Face · huggingface.co