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Mistral releases 1T-parameter Mistral Large 4 preview, open weights due end of October

simonwillison.net · 2026-10-07

Mistral Large 4 ('Le Chonk') is a 1 trillion parameter, 49 billion active parameter model; independent evaluation puts it roughly six months behind the frontier, a major step up from Mistral Large 3.

“Today they're releasing a preview of Mistral Large 4, a 1 trillion parameter, 49 billion active parameter model trained on their own cluster of 3,800 NVIDIA Grace Blackwell GPUs.”

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