Jean-Malo Delignon
Jean-Malo Delignon is a researcher whose coauthored work at Mistral AI spans reasoning models, coding agents, and speech systems. He studied mathematics and computer science at the University of Birmingham from 2015 to 2018, then worked in back-end and data software engineering and completed a Pacific Crest Trail through-hike from Mexico to Canada in 2019. In 2025, he coauthored papers introducing Magistral, Voxtral, and Devstral; in 2026, he coauthored papers on Voxtral Realtime and Voxtral TTS. As of October 2026, he is a research engineer at Mistral AI and describes the lab's use of GKE Agent Sandbox for reinforcement-learning work.
- Now at
- Mistral AI
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Timeline
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2015–2018
Mathematics and computer science
He studies mathematics and computer science at the University of Birmingham from 2015 to 2018.
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By 2019
Software work and a PCT hike
In 2019, he does back-end and data software engineering work and completes a Pacific Crest Trail through-hike from Mexico to Canada.
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June 2025
Coauthoring Magistral
In June 2025, he coauthors a paper introducing Magistral, Mistral AI's first reasoning model, and describing its scalable reinforcement-learning pipeline.
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July 2025
Voxtral audio chat models
In July 2025, he coauthors a paper presenting Voxtral Mini and Small as multimodal audio chat models for understanding spoken audio and text.
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August 2025
Devstral for coding agents
In August 2025, he coauthors a technical report introducing Devstral-Small, a lightweight open-source model for coding agents.
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February 2026
Voxtral Realtime transcription
In February 2026, he coauthors a paper introducing Voxtral Realtime, a streaming speech-recognition model with sub-second transcription latency.
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March 2026
Voxtral TTS
In March 2026, he coauthors Voxtral TTS, an expressive multilingual text-to-speech model that generates natural speech from as little as three seconds of reference audio.
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As of October 2026
Research engineer at Mistral
In October 2026, he is a research engineer at Mistral AI. In September 2026, he describes how the lab uses GKE Agent Sandbox to orchestrate hundreds of thousands of secure environments across clusters and handle spikes of over 30,000 sandboxes on one cluster.
Career
- NowMistral AIResearch engineer
Education
Sources and credits
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