Arthur Mensch is Chief Executive Officer of Mistral AI, responsible for designing and implementing the company's strategic vision, and leading the product and sales teams. A graduate of École Polytechnique, Télécom Paris and holder of the Master Mathématiques Vision Apprentissage at Paris Saclay, he completed his thesis between 2015 and 2018 in machine learning for functional brain imaging at Inria (Parietal team). In 2018, he spent two years as a post-doctoral fellow in the Applied Mathematics department at ENS Ulm, where he carried out work in mathematics for optimization and machine learning. In 2020, he joined DeepMind Paris as a researcher, working on language models, before leaving the company in 2023 to co-found Mistral AI.