Mistral previews Large 4, a 1T-parameter multimodal model with open weights due this month

Mistral has opened a public preview of Large 4, a natively multimodal mixture-of-experts model with about 1 trillion total and 52 billion active parameters, trained on roughly 3,800 Nvidia Grace Blackwell GPUs in Europe. Weights are due by month-end. Mistral says it leads open models on several enterprise tasks and tops some closed rivals in narrow areas such as visual grounding. Results are company-reported.