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Timothée Lacroix
Timothée Lacroix's file: mathematics, recommender systems, Meta AI, LLaMA-era research, and the engineering operation behind Mistral's European frontier models.
Lacroix went from French computer-science training into Facebook AI Research, studied recommender systems and tensor methods, stayed through Meta's large-model era, then became the engineering co-founder and CTO behind Mistral's rapid model-and-infrastructure buildout.
HOW THE HELL DID TIMOTHÉE LACROIX GET HERE?
2015
ENS COMPUTER SCIENCE, THEN STRAIGHT INTO FACEBOOK AI
Lacroix graduated from École Normale Supérieure in computer science and began working at Facebook AI Research in New York in 2015.
RECEIPTS: AI Now Summitreported
2016
HE TURNS RECOMMENDER SYSTEMS INTO A DOCTORAL PROBLEM
Lacroix began doctoral work on tensor factorization and recommender systems while continuing research connected to Facebook AI.
RECEIPTS: AI Now Summitreported
2019
THE META RESEARCHER FINISHES THE THESIS
Lacroix completed his doctoral research and continued at Meta, working alongside Guillaume Lample before the pair left for Mistral.
RECEIPTS: AI Now Summitreported
Apr 2023
THE META ENGINEER BECOMES MISTRAL'S CTO
Lacroix co-founded Mistral AI with Arthur Mensch and Guillaume Lample and took the chief technology officer role.
RECEIPTS: Mistral AIfirst-party
Sep 27, 2023
THE NEW LAB SHIPS MISTRAL 7B
Mistral released its 7B model only months after the company's creation, establishing the open-weight model strategy that made the startup visible globally.
RECEIPTS: Mistral AIfirst-party
Jun 11, 2025
THE MODEL COMPANY STARTS SELLING COMPUTE TOO
Mistral announced Mistral Compute as the company expanded from models and APIs toward a broader sovereign AI stack.
RECEIPTS: Mistral AIfirst-party