PeopleofSuperintelligence

Lab leader

Baptiste Rozière

Baptiste Rozière is a computer scientist whose work connects machine translation with programming languages and AI coding assistants. He coauthored work on code translation using automated tests in 2021 and compiler representations in 2022. At Meta, he contributed to Llama and led Code Llama; in 2025, he led Mistral AI’s code generation team and coauthored the reasoning model Magistral. As of October 2026, he leads Mistral AI’s code generation team.

Works
42

Publication numbers from OpenAlex, as of 18 October 2026. Citations and h-index are hidden because this OpenAlex record may be incomplete or mix in other authors.

Timeline

  1. October 2021

    Automated tests for code translation

    In October 2021, he coauthors a method that uses automated unit tests to filter invalid code translations and build a tested parallel corpus.

  2. June 2022

    Compiler representations for translation

    In June 2022, he coauthors work that uses compiler intermediate representations to improve code translation.

  3. August 2023

    Leading Code Llama

    He leads Code Llama, a family of code models whose variants support infilling and instruction following; he also contributes to Llama.

  4. June 2025

    Magistral and reasoning models

    In June 2025, he coauthors Magistral, which presents a reasoning model trained with reinforcement learning and describes Magistral Small as open source.

  5. November 2025

    Leading Mistral’s code team

    In November 2025, he leads Mistral AI’s code generation team and gives a keynote on code assistants based on the team’s recent work.

  6. As of October 2026

    Scaling code models at Mistral

    As of October 2026, he leads Mistral AI’s code generation team and is scheduled to discuss scaling code models.

Career

  1. Since 2025Mistral AICode generation team lead
  2. MetaCode Llama lead

From the biography.

  1. Google alumni founded or led 82 other organizations, the most among the labs we compareIncludes Baptiste Rozière. We trace 189 organizations founded or led by AI lab alumni, and 196 career moves between the labs.
  2. The median h-index is 54 at universities and 20 at frontier AI labsIncludes Mistral AI. The median h-index is 54 at universities and 20 at frontier AI labs. We compare publishing careers, citations and moves to estimate how universities and frontier labs contribute to AI research.
  3. The company share of AI researchers’ top papers rose from 3% to 32%Includes Mistral AI. We estimate where leading AI researchers worked when their most-cited papers appeared. The company share rose from 3% in 1975–1979 to 32% in 2020–2024.
  4. Google has the highest combined h-index among AI organizationsIncludes Mistral AI. Our estimates of combined and median h-index at AI organizations, using current affiliations and OpenAlex records.

Colleagues

People with dated positions at the same organization in the same years.

Sources and credits

Photo: We have no published photo of Baptiste Rozière yet. Send us a free-licensed photo.

  1. Leveraging Automated Unit Tests for Unsupervised Code Translation arxiv.org. Checked 18 October 2026.
  2. Code Translation with Compiler Representations arxiv.org. Checked 18 October 2026.
  3. Code Llama: Open Foundation Models for Code arxiv.org. Checked 18 October 2026.
  4. From copilots to coworkers at AAAI: the gap between agentic research and production kiro.dev. Checked 18 October 2026.
  5. Magistral arxiv.org. Checked 18 October 2026.
  6. GHOST Day: Applied Machine Learning Conference ghostday.pl. Checked 18 October 2026.
  7. Code assistants: from code completion to coding agents (AIware 2025 - Keynotes) 2025.aiwareconf.org. Checked 18 October 2026.
  8. Building Code Models: Scale and Beyond (SPLASH/ISSTA 2026 - REBASE industry track) conf.researchr.org. Checked 18 October 2026.