Overview

Celestial AI enhances high-performance computing in hyperscale data centers with its Photonic Fabric™, an optical compute interconnect. This technology reduces the need for Dynamic Random Access Memory (DRAM) by up to 35%, leading to significant cost savings and lower power consumption. It also allows for the disaggregation of High Bandwidth Memory (HBM) using optics, which is essential for future computing needs. The company's goal is to transform data center operations and support the demands of Generative AI and complex workloads.

Simplify's Take

What believers are saying

• Raised $250 million in Series C1 funding, reaching a $2.5 billion valuation.
• Growing demand for energy-efficient data centers aligns with Celestial AI's sustainable approach.
• Increasing interest in silicon photonics complements Celestial AI's Photonic Fabric™.

What critics are saying

• Competition from well-funded rivals like Lightmatter and Ayar Labs threatens market share.
• Commercial production timeline extends to 2027, risking delays and increased costs.
• Integration of Rockley's silicon photonics portfolio may present unforeseen challenges.

What makes Celestial AI unique

• Celestial AI's Photonic Fabric™ offers unique optical compute interconnect technology.
• The company reduces DRAM requirements by up to 35%, saving billions annually.
• Celestial AI enables HBM disaggregation over optics, a future necessity for compute units.

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Funding

Total Funding

$588.9M

Above

Industry Average

Funded Over

5 Rounds

Notable Investors:

Tiger Global

Notable Investors:

Tiger Global

$250,000,000

Series C

Mar 2025

Series C funding is usually for startups that are doing well and are looking for more money to fuel major growth, such as acquiring other companies, expanding into global markets, or launching new product lines. Investors typically include larger venture capital firms and private equity.

Series C Funding Comparison

Above Average

Industry standards

Ind Avg. $50M

$16M

$40M

$50M

$62M

$100M

$250M

View all funding stages