Mistral AI Launches Mistral Large 4 Preview, a 1.05T-Parameter Open-Weight Model

Mistral AI has launched a public preview of Mistral Large 4, a 1.05-trillion-parameter open-weight multimodal model nicknamed Le Chonk, positioning the release as a European attempt to narrow the gap with leading U.S. closed systems and China’s strongest open-weight models. The company says the model is available now through Mistral Studio and its API, with downloadable weights planned for October 27 after additional testing and reinforcement learning.