The round was led by Fidelity Management & Research Company, bringing the total capital raised to date to more than $515 million. In addition to Fidelity Management & Research Company, new investors include funds and accounts managed by BlackRock, Maverick Silicon, Tiger Global Management and Lip-Bu Tan, as well as participation from existing investors including AMD Ventures, Koch Disruptive Technologies (KDT), Temasek, Temasek's wholly-owned subsidiary Xora Innovation, Porsche Automobil Holding SE and The Engine Ventures.

Celestial AI is the creator of the Photonic Fabric, an optical interconnect technology platform for AI computing systems. The Photonic Fabric provides the foundational technology for data center computing, networking and memory systems to enable advancements in AI with sustainable and profitable business models. Celestial AI's Photonic Fabric delivers a transformative leap in AI system performance and energy efficiency.