Mistral AI, the French firm with a recent valuation of $13.8 billion, has completed its inaugural acquisition. The company, a competitor to OpenAI, has reached an agreement to purchase Koyeb, a Parisian startup specializing in simplifying large-scale AI application deployment and managing the underlying infrastructure. While Mistral has built its reputation on developing large language models (LLMs), this move solidifies its strategy to become a comprehensive, full-stack provider. This follows its June 2025 announcement of Mistral Compute, an AI cloud infrastructure service, which the integration of Koyeb is expected to accelerate.

Koyeb was founded in 2020 by three former employees of the French cloud provider Scaleway. The startup's mission was to assist developers in processing data without managing server infrastructure, utilizing a serverless approach. This methodology became increasingly pertinent as AI applications grew more complex, leading Koyeb to recently introduce Sandboxes—isolated environments designed for deploying AI agents. Prior to the acquisition, Koyeb's platform was already being used to deploy models from Mistral and other companies.

In a blog post, Koyeb confirmed its platform will remain operational. However, according to a Mistral press release, Koyeb's team and technology will now also support Mistral in deploying models directly on clients' on-premises hardware, optimizing GPU utilization, and scaling AI inference—the process of running a trained model to generate outputs.

As part of the transaction, Koyeb's 13 employees and its three co-founders—Yann Léger, Edouard Bonlieu, and Bastien Chatelard—will join Mistral's engineering team under the oversight of CTO and co-founder Timothée Lacroix. Lacroix stated that Koyeb's platform is anticipated to evolve into a "core component" of Mistral Compute in the months ahead. "Koyeb’s product and expertise will accelerate our development on the Compute front, and contribute to building a true AI cloud," Lacroix noted.

This acquisition aligns with Mistral's expanding cloud infrastructure ambitions. Mere days ago, the company revealed a $1.4 billion investment in Swedish data centers, responding to growing demand for alternatives to U.S.-based infrastructure.

Koyeb had secured $8.6 million in total funding. This included a $1.6 million pre-seed round in 2020 and a $7 million seed round in 2023 led by Paris-based venture firm Serena. Floriane de Maupeou, a principal at Serena, commended the acquisition.

Bolstered by geopolitical trends and its focus on enabling enterprises to derive value from AI, Mistral recently surpassed $400 million in annual recurring revenue. Moving forward, Koyeb will also concentrate on enterprise clients, and new user registrations for its Starter tier have been discontinued.

Financial terms of the deal were not disclosed, and it is unclear if further acquisitions are planned. However, speaking at the Techarena conference in Stockholm last week, CEO Arthur Mensch highlighted Mistral's ongoing hiring for infrastructure and other positions. He presented the company to potential recruits as a European-headquartered organization conducting frontier research within the region.