Mistral AI buys Koyeb to bolster cloud infrastructure

Mistral AI has made its first acquisition by agreeing to buy Koyeb, a Paris-based startup specializing in serverless AI deployment—a cloud computing execution model where the cloud provider manages the server infrastructure. The transaction marks a strategic shift for the French artificial intelligence firm, moving beyond its core focus on developing large language models to position itself as a full-stack provider. By integrating Koyeb’s technology, Mistral AI plans to accelerate the development of Mistral Compute, an AI cloud infrastructure offering announced in June 2025. Koyeb’s team and technology will help Mistral deploy models directly on clients’ own hardware, optimize graphics processing unit (GPU) usage, and scale AI inference—the process of running a trained AI model to generate responses. Koyeb’s platform is expected to transition into a core component of Mistral Compute over the coming months, though Koyeb reported that its platform will continue operating.

The acquisition brings Koyeb’s 13 employees, including its three co-founders, into Mistral’s engineering team under the leadership of CTO and co-founder Timothée Lacroix. The transaction follows a period of commercial growth for Mistral, which recently passed a major revenue milestone, while Koyeb joins with a history of early-stage venture backing.

Key financial figures for the companies include:

• Mistral AI valuation: $13.8 billion at its last valuation.
• Mistral AI annual recurring revenue (ARR): Recently passed $400 million, a key metric for subscription-based businesses.
• Total funding raised by Koyeb: $8.6 million since it was founded in 2020.
• Koyeb pre-seed round: $1.6 million raised in 2020.
• Koyeb seed round: $7 million raised in 2023, led by Paris-based venture capital firm Serena.

Leadership from both companies framed the transaction as a step toward building sovereign AI infrastructure in Europe—referring to AI systems developed and hosted within a specific region to ensure local control and regulatory compliance. Timothée Lacroix, CTO and co-founder of Mistral AI, stated that “Koyeb’s product and expertise will accelerate our development on the Compute front, and contribute to building a true AI cloud.” This push into infrastructure is supported by Mistral’s recent $1.4 billion investment in data centers in Sweden, a move that addresses growing demand for alternatives to U.S. cloud infrastructure. Floriane de Maupeou, a principal at Serena, told TechCrunch that the combination will play a key role in building the foundations of sovereign AI infrastructure in Europe. Mistral CEO Arthur Mensch has also emphasized this regional focus, pitching the company to prospective talent as an organization headquartered in Europe that conducts frontier research there.

Why it matters

The acquisition of Koyeb marks Mistral AI’s first purchase, signaling its strategic shift toward becoming a full-stack player by integrating Koyeb’s serverless infrastructure into its Mistral Compute offering.