AI Inventors

Guillaume Lample - Co-founder and Chief Science Officer of Mistral AI

By Kamal Kashyap • Jul 02, 2026
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Guillaume Lample is a French AI researcher. He co-authored Meta's LLaMA model and co-founded Mistral AI, serving as its CSO.

Introduction

Guillaume Lample is a French computer scientist and AI researcher. He co-founded Mistral AI and serves as its Chief Science Officer.

Meta AI & LLaMA

While working at Meta's FAIR lab in Paris, Lample led key research into multilingual models. He was one of the core authors of LLaMA, the open-weight model that initiated the local LLM developer movement.

CSO of Mistral

Lample co-founded Mistral AI in 2023. As CSO, he oversees the training methodologies, pre-training datasets, and architectural improvements that power Mistral's model lineup.

Guillaume Lample
Guillaume Lample
Guillaume Lample
Company Mistral AI
Country France
Born March 12, 1991 (age 35)
Paris, France
Education École Polytechnique, Sorbonne University (PhD)
Notable work LLaMA model co-author, Mistral 7B, Mixtral 8x7B
Title Co-founder & CSO of Mistral AI

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