France's Mistral releases the 1-trillion-parameter Large 4, with open weights due at the end of the month

Mistral AI unveiled Mistral Large 4, nicknamed 'Le Chonk', on October 6. It is a mixture-of-experts model with 1 trillion parameters, 49 billion of them active at a time, and it takes text and images. Mistral says it is the best open-weights model from the US or Europe on aggregated benchmarks, state of the art on cyber defense, manufacturing and finance work, and ahead of closed frontier models on visual grounding. All of that is the company's own claim. The announcement passed 36,000 likes and 3.6 million views.

The API is open today at a reported $1.36 per million input tokens and $4.18 per million output tokens. The weights are due at the end of October. Mistral stresses that training and serving stay in Europe, and says it is working privately with cybersecurity partners.