Reflection AI, a US startup vying to develop open models, has signed a $1 billion computing deal with European AI infrastructure company Nebius.

Nebius, formerly the international arm of Russian tech giant Yandex, will provide Reflection with access to Nvidia’s latest chips. The deal comes just weeks after the startup signed a similar agreement to access SpaceX’s computing resources, and reflects several partnerships of AI companies as they compete to secure computing to train and deploy their models.

Along with its increasingly capable Chinese counterparts, Reflection is one of several open-source AI model developers that have received widespread attention lately as there is debate over the value of premium, closed-source AI models, especially with rising concerns about data retention as well as government intervention.

Just last month, the Trump administration pressured Anthropic and OpenAI to restrict their new, more powerful models, raising concerns that access to AI models could disappear overnight. That, coupled with the launch of more capable open models from China, has led to a surge in widespread interest in open source AI.

Reflection, currently valued at $8 billion, was founded in 2024 by two former Google DeepMind researchers. It has already raised nearly $2.6 billion in funding from backers including Nvidia, Sequoia Capital and Lightspeed Venture Partners.

Shortly after securing a $2 billion investment from Nvidia, Nebius signed a five-year infrastructure deal with Meta worth up to $27 billion. Last year, Nebius signed a multi-year deal with Microsoft worth up to $19.4 billion.

TechCrunch has reached out to Reflection and Nebius for more information.