In 2023, Arthur Mensch, along with Guillaume Lample and Timothée Lacroix, founded Mistral AI with the mission of making generative AI ubiquitous and pioneering a new approach to AI - one that is more open, portable, independent, and accessible to all.

After more than 10 years of academic work focused on the possibilities of machine learning in the field of brain imaging and on optimization of machine learning, he joined DeepMind Paris in 2020 as a researcher, where he spent three years and played a key role in the development and deployment of flagship projects in generative AI.