Nebius paid $643M for 20 people as inference drives AI profits

Nebius Group, the Dutch cloud computing firm that emerged from Russian internet giant Yandex in 2024, is making a bold bet on AI inference. The company has agreed to acquire Eigen AI, a 20-person startup founded by alumni of MIT’s HAN Lab, for roughly $643 million in a mix of stock and cash. The deal was announced on May 1.

In a landscape where the largest AI players chase scale through massive infrastructure and headcount, Nebius is taking a different route. The acquisition targets a niche but critical area: AI inference optimization, the process of running trained models to generate outputs. While training models grabs headlines, inference is where real-world profits are made, and speed and efficiency directly impact the bottom line.

Eigen AI’s team of just two dozen people has developed technology that accelerates inference workloads, reducing latency and cost for cloud customers. For Nebius, this isn’t about adding bodies; it’s about acquiring deep technical expertise and proprietary software that can differentiate its cloud offerings. The price tag, nearly $32 million per employee, underscores the immense value placed on specialized AI talent and intellectual property.

The move signals a shift in the AI industry’s priorities. As companies move from building models to deploying them at scale, the ability to run inference faster and cheaper becomes a competitive advantage. Nebius is betting that by owning this optimization layer, it can capture a larger slice of the growing inference market, where margins are tight but volumes are exploding.

This acquisition also highlights the strategic importance of small, high-impact teams in AI. Rather than building from scratch or hiring thousands, Nebius is buying a targeted solution that can be integrated quickly. The deal positions the company to compete more aggressively against hyperscalers like AWS, Google Cloud, and Microsoft Azure, which are also racing to optimize inference but often rely on general-purpose hardware.

For Eigen AI, the acquisition provides the resources and customer base to scale its technology rapidly. For Nebius, it’s a calculated investment in the future of AI profitability, where inference, not training, will likely drive the most revenue. The $643 million price reflects that conviction.