Mistral unveils Mistral Large 4, "Le Chonk", and returns to the frontier-model race
The French startup launched a public preview of Mistral Large 4, its new large model, on Tuesday 6 October, after long months of near-silence that had made it look outpaced by American and Chinese labs. The model has 1,050 billion parameters, 49 billion of them activated on each request, in a so-called MoE architecture (an assembly of specialised sub-models that only lights up the useful part), and it was trained in Mistral's own data centres in Europe. The company presents it as the best open-weight model outside China, enough to "narrow the gap" with GPT-6 Astra and Claude, and promises to speed up its release cadence. The preview is available now through its programming interface; the full weights, downloadable and runnable by anyone, will be published on 27 October. The stakes go beyond raw performance: Mistral is trying to prove that a European player can still keep pace without giving up on openness.

