Mistral AI

Le Chonk: Built for Coders, Trusted by Defenders.

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Le Chonk, a 1 trillion‑parameter multimodal model, has been released with open weights by Mistral AI. It is positioned as the best open‑weight model for coding and was trained in Europe.

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Simon Willison
Oct 6

Introducing Mistral Large 4: Le chonk

Mistral has released a preview of its new Mistral Large 4 model, a 1 trillion‑parameter, 49 billion‑active‑parameter language model trained on a cluster of 3,800 NVIDIA Grace‑Blackwell GPUs. The preview is available through their API, with two reasoning levels—"none" and "high"—and the company plans to release the open‑weights version by the end of the month. In preliminary tests, the model scores 38 on Artificial Analysis, outperforming last year’s Mistral Large 3 and approaching the performance of larger competitors.