NBIS · Nebius Group N.V.

Nebius Group N.V. has entered into an agreement to acquire Eigen AI, a company specializing in inference and model optimization, for approximately $643 million payable in cash and Class A shares valued based on the 30-day weighted average stock price, subject to adjustments. This acquisition directly bolsters Nebius Token Factory, its managed inference platform, by integrating Eigen AI's battle-tested optimization stack with Nebius's global compute capacity. The combined capabilities have already produced jointly optimized endpoints ranking among the fastest on Artificial Analysis for leading open-source models. Post-close, Eigen AI's layers will enable enterprise-grade autoscaling and fine-tuning across models like Llama, Gemma, and Qwen, addressing production challenges in inference such as memory efficiency for MoE and long-context architectures. The deal also advances Nebius's US expansion, with Eigen AI's founding team—MIT HAN Lab alumni including Ryan Hanrui Wang (Sparse Attention pioneer), Wei-Chen Wang (AWQ quantization award winner), and Di Jin (Llama contributor)—establishing a San Francisco Bay Area engineering hub. This adds elite research talent to Nebius's in-house AI R&D. Existing Eigen AI customers gain access to Nebius's infrastructure, while Nebius clients benefit from superior throughput, lower inference costs, and faster model adoption. Roman Chernin, Nebius CBO, emphasized the fit in a capacity-scarce AI environment, and Eigen AI CEO Ryan Hanrui Wang highlighted cultural alignment. The transaction awaits antitrust clearance and customary conditions, with closure anticipated soon.