Mistral unveils Large 4 'Le Chonk', a trillion-parameter open-weight frontier model, with API access live and weights arriving October 27

Mistral AI announced today that Mistral Large 4, code-named "Le Chonk," is now available via API, with the full model weights to follow on October 27 under a custom Mistral license. The 1-trillion-parameter sparse model, which maintains only 49 billion active parameters during inference, was trained over roughly two months on 4,000 NVIDIA Grace Blackwell GPUs across Mistral's sovereign European data centers, establishing what the company claims is the strongest open-weight AI model developed outside China.