Arthur Mensch
Arthur Mensch is cofounder and chief executive of Mistral AI. He entered École polytechnique in 2011 and spent nearly three years at DeepMind before Mistral. He coauthored RETRO, which studied language models that retrieve external text, and Chinchilla, which examined how to balance model size and training data under a computing budget. In 2023 he founded Mistral with Guillaume Lample and Timothée Lacroix. He was among the authors of Mistral 7B, and the team later opened La Plateforme for developers to use model services. In October 2026 the company announced a public preview of Mistral Large 4. Mensch is Mistral’s chief executive.
- Now at
- Mistral AI
- Works
- 18
Publication numbers from OpenAlex, as of 14 October 2026. Citations and h-index are hidden because this OpenAlex record may be incomplete or mix in other authors.
Timeline
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2021
Adding retrieved text
Coauthored RETRO, a language model approach that retrieves external text.
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2022
Balancing model size and data
Coauthored Chinchilla research on model size and training data.
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2023
Founding Mistral AI
Cofounded Mistral with Guillaume Lample and Timothée Lacroix.
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October 2023
Publishing Mistral 7B
Coauthored the Mistral 7B report.
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December 2023
Opening a model service
The team launched La Plateforme beta services in December 2023.
Sources and credits
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