“Today, we release the weights of a new and improved Le Chonk, advancing the open…”

Mistral AI @MistralAI29 October 2026X

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Today, we release the weights of a new and improved Le Chonk, advancing the open frontier for agentic coding and cybersecurity.

💻 Built to build: Le Chonk ranks #1 on @cognition’s FrontierCode among open models, and sets a new benchmark for Pareto efficiency on @artificialanalysis.

🛡 Built to defend: State-of-the-art in cyberdefense, put through the paces by the world’s leading cyber vendors, including @CrowdStrike, @cloudflare, @rubrik, @zscaler, and others.

Built for sovereignty: Make it yours. Download the weights on @huggingface , customize it with Mistral Forge, and deploy it wherever you need it.

Read more from our team and customers 👇:

Source: x.com/MistralAI/status/2115811242556137820Archived 2026-10-29 via fxtwitter (unofficial).Counts: 324,002 views, 4,150 likes, 539 reposts, 285 replies (at fetch time)Media: image

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Model releases 29 Oct 121 days after the cutoff

Mistral releases the weights of an improved Mistral Large 4 (“Le Chonk”), a 1T-parameter MoE, under a modified MIT licence

Archived text

Cited in

Mistral releases the weights of an improved Mistral Large 4 (“Le Chonk”), a 1T-parameter MoE, under a modified MIT licence