Arthur MenschArthur Mensch

Born 1992 in Paris. Father a mathematician, mother a computer scientist. Studied at Lycee Hoche (prep school), then Ecole Polytechnique (MS Applied Mathematics and Computer Science, 2011-2015), and Ecole Normale Superieure Paris-Saclay (MS Mathematics, Vision and Learning, 2015). PhD in machine learning and functional MRI, followed by a 2-year postdoc in mathematics. Joined DeepMind Paris in late 2020, working on large language models, multimodal systems, and retrieval-augmented architectures. Left in May 2023 to co-found Mistral AI with Guillaume Lample and Timothee Lacroix (both ex-Meta FAIR). Mistral became Europe's AI champion, reaching a multi-billion dollar valuation within a year. Known for open-weight models (Mixtral, Mistral Large) and strategic partnerships with Microsoft, Salesforce, and Nvidia. On Sep 8, 2026 Mistral raised €3B (~$3.5B) led by Samsung, with the EU-backed Scaleup Europe Fund (EQT) and PSG Equity, at a post-money above €21B (~$24B) — nearly double the €11.7B ASML-led round a year earlier; Mensch expects 2026 ARR to exceed $1B and will spend on its own data centers.