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Celestial AI

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Developing a proprietary technology platform which enables the next generation of high-performance computing solutions

Sunnyvale, United StatesFounded 2020AI
Valuation $2.5–5B Last recorded · 2025
Headcount <100 Current team size
Total funding $500M–1B Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Celestial AI and the history behind them.

About Celestial AI

Celestial AI is a startup that operates in the high-performance computing market, specifically in the realm of hyperscale data centers. The company has developed a unique technology known as Photonic Fabric™, an optical compute interconnect that significantly improves the performance and economics of memory sharing.

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The company's technology can reduce total DRAM (Dynamic Random Access Memory) requirements by up to 35%, representing billions of dollars in data center DRAM spend annually. This is achieved by using optical interconnects, which not only reduce power consumption but also provide a growth path to bandwidth capacity. This is particularly important in the context of multi-tenant clouds, where lower latency memory pooling could bring savings of around 23%.

In addition to this, Celestial AI's technology also allows for the disaggregation of HBM (High Bandwidth Memory) by running it over optics instead of PCIe (Peripheral Component Interconnect Express) physical media. This is expected to become a real need within the next five years, as even compute units will require an optical interface to connect with their peers at the required bandwidth capacity.

The company's business model is based on providing this transformational optical connectivity capability to data centers, thereby unlocking the potential of Generative AI and other complex workloads. This could be a truly disruptive moment for advanced computing, and Celestial AI is at the forefront of this change.

Source: Dealroom company data

At a glance

Founded
2020
Headquarters
Sunnyvale, United States
Sector
AI
Power Law
Unicorn$1–10B valuation tier

Investors

22 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed1 investor entered at this stage

  • Tyche Partners

Series A12 investors entered at this stage

  • Khosla Ventures
  • Temasek
  • Koch Disruptive Technologies
  • The Engine
  • imec.xpand
  • M Ventures
  • Fitz Gate Ventures
  • Smart Global Holdings
  • IAG Capital Partners
  • Xora Innovation
  • Samsung Catalyst Fund
  • Porsche SE

Series B and later9 investors entered at this stage

Employees mapped 64 incl. 5 AI specialists
Founders Hidden — book a demo/100 quality score
Key operators 11 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
6 countries with
team presence
🇺🇸 United States82.6%
🇮🇳 India8.7%
🇩🇪 Germany2.2%
🇨🇭 Switzerland2.2%
🇮🇱 Israel2.2%
Top 5 of 6 shown
Web traffic by country
5.6K monthly visits
across markets
🇺🇸 United States32.1%
🇨🇦 Canada30.4%
🇮🇳 India17.9%
🇬🇧 United Kingdom12.5%
🇧🇷 Brazil3.6%
Top 5 markets shown

Patents

Estimated portfolio value
$84k

1 active patent families included in this estimate.

A patent family groups patent filings for the same invention. Source: Dealroom · PatSnap.

Explore the patent portfolioPatent records, technology areas and peer comparisonsBook a demo

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Celestial AI on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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