PeopleofSuperintelligence

Lab leader

Timothée Lacroix

Timothée Lacroix is co-founder and chief technology officer of Mistral AI. He studied at the École Normale Supérieure and worked as a researcher at Meta. With Nicolas Usunier and Guillaume Obozinski, he published work on canonical tensor decomposition for knowledge-base completion in 2018 and on temporal knowledge bases in April 2020, when Facebook AI Research and ENPC were his affiliations. The February 2023 LLaMA paper listed him as an author of foundation language models from 7B to 65B parameters. In April 2023 he co-founded Mistral AI with Arthur Mensch and Guillaume Lample, and the Mistral 7B and Mixtral of Experts papers of October 2023 and January 2024 named him among their authors.

Works
20

Publication numbers from OpenAlex, as of 17 October 2026. Citations and h-index are hidden because this OpenAlex record may be incomplete or mix in other authors.

Photo of Timothée Lacroix

Timeline

  1. By 2023

    School and Meta research

    He studies at the École Normale Supérieure and works as a researcher at Meta until 2023.

  2. 2018

    A tensor paper at ICML

    Nicolas Usunier, Guillaume Obozinski, and he publish Canonical Tensor Decomposition for Knowledge Base Completion at the International Conference on Machine Learning in 2018.

  3. April 2020

    Temporal knowledge bases

    Facebook AI Research and ENPC are his affiliations in April 2020, on a paper with Guillaume Obozinski and Nicolas Usunier about tensor decompositions for temporal knowledge-base completion.

  4. February 2023

    The LLaMA paper

    LLaMA: Open and Efficient Foundation Language Models, submitted in February 2023, introduces foundation language models from 7B to 65B parameters, releases them to the research community, and includes him as an author.

  5. April 2023

    Co-founding Mistral AI

    Mistral AI, a French company, is co-founded in April 2023 by him, Arthur Mensch, and Guillaume Lample, after his research at Meta.

  6. October 2023

    The Mistral 7B paper

    Mistral 7B, a 7-billion-parameter language model, appears in October 2023 in a paper he co-authors, and the models are released under the Apache 2.0 license.

  7. January 2024

    Mixtral of Experts

    Mixtral of Experts, submitted in January 2024, introduces Mixtral 8x7B, a sparse mixture-of-experts language model, includes him as an author, and releases the models under the Apache 2.0 license.

  8. As of October 2026

    Chief technology officer

    Co-founder and chief technology officer of Mistral AI is his role in 2026.

Sources and credits

Photo: mistral.ai; About Mistral | Open, frontier AI for all.; creator not stated. License: Not stated by source. Source: mistral.ai. Cropped to a square and resized. Ask us to remove or replace this photo.

  1. Timothée Lacroix forbes.com. Checked 16 October 2026.
  2. Mistral AI, the French AI nugget co-founded by two X alumni, raised €500 mlns in 2023 - École polytechnique polytechnique.edu. Checked 16 October 2026.
  3. Canonical Tensor Decomposition for Knowledge Base Completion proceedings.mlr.press. Checked 16 October 2026.
  4. Tensor Decompositions for Temporal Knowledge Base Completion arxiv.org. Checked 16 October 2026.
  5. [2302.13971] LLaMA: Open and Efficient Foundation Language Models arxiv.org. Checked 16 October 2026.
  6. Mistral AI - Wikipedia en.wikipedia.org. Checked 16 October 2026.
  7. Mistral AI — Wikipédia fr.wikipedia.org. Checked 16 October 2026.
  8. [2310.06825] Mistral 7B arxiv.org. Checked 16 October 2026.
  9. [2401.04088] Mixtral of Experts arxiv.org. Checked 16 October 2026.
  10. About Mistral | Open, frontier AI for all. mistral.ai. Checked 16 October 2026.