Microsoft and Mistral to Boost European Sovereign AI

Microsoft has expanded its partnership with Mistral, a French company that develops large language models, despite its existing cloud partnership with OpenAI.  

The agreement includes infrastructure investment in Europe and deeper integration of Mistral’s models into Microsoft’s product suite.

With Europe lagging behind the US and China in the AI sector, the deal could help Mistral build data centres across Europe, expanding both companies’ customer bases on the continent. 

Multi-billion dollar infrastructure investment

Mistral Medium 3.5 and OCR 4 are now available in Microsoft Foundry, while Mistral Medium 3.5 has been added to Microsoft Copilot Studio.

“Our mission has always been to put frontier AI in the hands of every organisation while keeping them in control of their technology,” says Arthur Mensch, Co-Founder and CEO of Mistral. 

“With Microsoft as our partner, our models reach enterprises and public institutions at global scale, delivered through a platform trusted for the most demanding, regulated workloads and available everywhere our customers operate.”

Mistral Medium 3.5 is an open-weight model that enables developers and enterprises to build, customise and deploy AI applications with control and sovereign deployment options. Meanwhile, OCR 4 supports structured document processing pipelines and agentic workflows for automation applications.

The agreement builds on a partnership that began in 2024 to “build trustworthy and safe AI systems and products,” according to Eric Bord, who served as Corporate Vice President of the Azure AI Platform at Microsoft. 

Microsoft and Mistral also worked together in 2025 to help HTX, also known as the Home Team Science and Technology Agency, use Mistral Phi-4 models and integrate small language model training frameworks into its AI platform and infrastructure 

Data centre capacity expansion

The partnership includes a multi-billion-dollar agreement focused on AI infrastructure across Europe, with Mistral committing to investing US$1.43bn in new data centres in Sweden.

Microsoft also announced plans last year to increase its European data centre capacity by 40% over the next two years. 

According to Microsoft, its partnership with Mistral strengthens Europe’s AI infrastructure while helping meet demand for cloud and AI services.

Mistral is adding GPU capacity to increase compute power using thousands of NVIDIA Vera Rubin GPUs. 

“Agentic AI is driving unprecedented demand for high-performance, energy-efficient AI infrastructure,” says Ian Buck, Vice President of Hyperscale and High-Performance Computing at NVIDIA.

“Agentic AI is driving unprecedented demand for high-performance, energy-efficient AI infrastructure.

“By deploying NVIDIA Vera Rubin systems at scale, Mistral and Microsoft will give customers the computing foundation they need to build and run the next generation of AI across Europe and beyond.”

Sovereign AI positioning

Mistral is positioned as a European-centric sovereign AI option that could help firms reduce dependence on American AI providers. 

Brad Smith, Vice Chair and President at Microsoft, says: “Europe should have access to the world’s most capable AI without compromising control over their data, operations or digital future.

“By bringing Mistral's frontier European models into our sovereign cloud portfolio and enabling them across public cloud, cloud-connected and fully disconnected environments, we are honouring the European Digital Commitments we made and giving customers a trusted foundation for AI they can operate on their own terms.”

The EU is dependent on the US for AI services. According to the Guardian in June, the European Commission wants to ensure no foreign government or company has access to a kill switch that could turn off or disrupt vital tech services across the continent.

According to McKinsey, the biggest impediments to AI adoption across Europe are concerns over trust, security and national dependency. In an article titled Accelerating Europe’s AI adoption: The role of sovereign AI, the consulting firm suggested that sovereign AI capabilities could provide greater flexibility through national, economic, operational and technical independence.

Samsung investment discussions

Mistral is also in talks with Samsung, according to the Financial Times, for a deal worth as much as €1bn (US$1.14bn).

“Increasing pressure from European governments is driving the agenda around European sovereignty, including efforts to reduce dependency on critical technologies that have historically been supplied by the US and China,” says Ashish Patel, Managing Director at global investment bank Houlihan Lokey’s Capital Solutions Group.

“Companies such as Mistral and Lovable have been vocal about the importance of sovereign European technologies, and this shift in market sentiment is increasingly being reflected in capital allocation decisions.”