Timothée Lacroix

THE RECOMMENDER-SYSTEMS PHD WHO BECAME MISTRAL'S CTO

Lacroix went from French computer-science training through Facebook AI Research and a doctorate in recommender systems, then became Mistral's engineering co-founder and CTO — shipping Mistral 7B months after the company's creation. He's the engineer behind the open-weight strategy that put Mistral on the map — then came the sovereign stack: models and APIs first, compute next.

1. 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.

   SOURCES: AI Now Summitreported

2. 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.

   SOURCES: AI Now Summitreported

3. 2019

   HE FINISHES THE THESIS AND TEAMS UP WITH LAMPLE

   Lacroix completed his doctoral research and continued at Meta, working alongside Guillaume Lample before the pair left for Mistral.

   SOURCES: AI Now Summitreported

4. 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.

   SOURCES: Mistral AIfirst-party

5. 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.

   SOURCES: Mistral AIfirst-party

6. 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.

   SOURCES: Mistral AIfirst-party