Mistral AI · 2026-05-28 · major
Mistral Books a 10 MW Inference-Only Data Center in Les Ulis — First Sovereign-Capacity Site Outside the Paris Training Cluster, Opens Q3 2026
At the AI Now Summit, Mistral announced a 10 MW inference-only facility in Les Ulis, Essonne — its first dedicated inference site separate from the existing Bruyeres-le-Chatel training cluster, scheduled to open in Q3 2026.
Mistral splits training and inference across two French sites, betting 10 MW of dedicated inference capacity will buy it predictable serving costs.
Key specs
| Capacity | 10 MW |
|---|---|
| Site | Les Ulis, Essonne (France) |
| Opens | Q3 2026 |
| Workload | Inference-only |
What is it?
A new 10 MW Mistral data center in Les Ulis (Essonne, south of Paris) dedicated solely to inference workloads. It joins the existing Bruyeres-le-Chatel training site to give Mistral its first inference-only capacity it directly controls, announced at the AI Now Summit 2026 in Paris on May 28.
How does it work?
Mistral is splitting its compute footprint along the workload axis: Bruyeres-le-Chatel handles long-running model training, and Les Ulis is being built for the latency-sensitive serving side. The company frames this as a hedge against compute supply-chain risk — owning the inference site means it controls both capacity and the security boundary for customer data without depending on hyperscaler queueing.
Why does it matter?
Most labs lease inference capacity from AWS, Azure, GCP, or CoreWeave and inherit those providers' cost curves and outage profiles. Owning a dedicated 10 MW inference site in the EU lets Mistral offer regulated European customers a sovereign-serving story while smoothing out the bumps that have made GPU pricing volatile through 2026.
Who is it for?
EU enterprises and governments procuring on-shore inference; infra-watchers tracking lab-owned vs hyperscaler capacity.