Fidelity led a $250m Series C1 round in Celestial AI.

Fidelity, an American multinational financial services corporation, led a $250m Series C1 round in Celestial AI, a machine learning accelerator company, with participation from BlackRock, Maverick Silicon, Tiger Global Management, Lip-Bu Tan, AMD Ventures, Koch Disruptive Technologies, Temasek, Xora Innovation, Porsche Automobil and The Engine Ventures. “With the emergence of complex reasoning models and agentic AI, the requirements on AI infrastructure are compounding. Cluster sizes must scale from a few AI processors in a server to tens of processors in a single rack and thousands of processors across multiple racks, all while relying on high-bandwidth, low-latency network connectivity to handle massive data transfers between processors. Celestial AI’s Photonic Fabric is the only technology platform capable of meeting these critical demands while setting new standards for bandwidth, latency, energy efficiency and total cost of ownership. We are excited to work with top global investors who bring the capital and commitment to support our long-term mission of revolutionizing AI infrastructure with our Photonic Fabric,” David Lazovsky, Celestial AI CEO.