AI Infrastructure Startups Raise $280 Million in New Funding
Celestial AI closed a $255 million round for optical interconnects, while data platform Protege secured $25 million in a Series A.
Celestial AI's Photonic Fabric
Celestial AI, a company developing optical interconnect technology, announced the final close of its Series C1 funding round at $255 million on Aug. 13, 2025. The round included new strategic investors VentureTech Alliance and Samsung Catalyst Fund, bringing the company's total funding to $520 million.
The capital will be used to accelerate the commercial deployment of its Photonic Fabric technology. This platform uses light to move data between chips, aiming to overcome the physical limitations and data movement bottlenecks of traditional copper wiring in AI data centers.
Protege Secures Data Pipeline
In the data-as-a-service …
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