Company profile

Celestial AI

Celestial AI has raised a total of $589 million in funding over multiple rounds, achieving unicorn status in March 2025. Its latest Series C round of $250 million, closed on February 25, 2025, was led by Fidelity Investments and BlackRock. Founded in 2020 and headquartered in Santa Clara, United States, Celestial AI provides AI-powered optical processing units and high-performance computing solutions using integrated silicon photonics. With 11–50 employees, the company continues advancing AI infrastructure, edge computing, and AI-native applications globally.

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Quick facts

Total funding: $589 million
Founded: 2020
Headquarters: Santa Clara, United States, Celestial AI provides AI-powered optical processing units and high-performance computing solutions using integrated silicon photonics
Employees: 11 to 50

Notable investors

Fidelity Investments
BlackRock

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