Photonic Fabric optical interconnect technology for AI data centers
Celestial AI develops the Photonic Fabric optical interconnect platform for AI data centers, replacing copper with light to dramatically increase bandwidth between accelerators while reducing power consumption. The company competes directly with Ayar Labs and Lightmatter in the photonics-for-AI category. In March 2025, Celestial AI raised a $250M Series C1 led by Fidelity at a ~$2.5B valuation, bringing total funding to ~$580M. Strategic investors include AMD Ventures and BlackRock.
Semiconductors📍 Santa Clara, CAFounded 2020
Current Valuation
$2.5B
as of 2025-Q1
UNICORN
QL Price
$2.5B
0% vs last round
QuantLogix's current estimate for Celestial AI, published 2026-10-07 — in line with the last disclosed round of $2.5B (2025-Q1).
Confidence
medium
Basis
secondary led
What backs this price
Last disclosed round
$2.5B
2025-Q1
weight 0.35
Secondary market print
$2.5B
2026-06-27
weight 0.54
How this price has held up
No round has priced for Celestial AI since QuantLogix began publishing a price for it, so there is nothing to grade yet. The claim above is on the record from 2026-10-07 and will be graded against the next priced round. See the full accuracy record →
Which publicly-traded funds already hold it, what $10,000 buys, and whether any route is open to you.
Cite this price as QuantLogix QL Price, Celestial AI, 2026-10-07 (ba422024cbc6f19d).
The id pins this exact claim, so a citation stays checkable after the price moves.
Model estimate for research — not a quote, target price, or investment advice.
IPO Outlookprivate
Is Celestial AI going public in 2027?
No. Celestial AI is private and has not filed to go public; 2027 is the earliest year discussed. There is no S-1 on file.
What is Celestial AI's valuation in 2026?
Celestial AI is valued at $2.5B as of 2025-Q1, set by its Series C1 ($250M, Mar 2025). That is the last confirmed mark, not a live price — private shares do not trade continuously.
Has Celestial AI filed an S-1?
No public S-1 is on file for Celestial AI.
Who are Celestial AI's investors?
Celestial AI's investors include Fidelity, U.S. Innovative Technology Fund, BlackRock, AMD Ventures, Temasek, Tiger Global.
How much has Celestial AI raised?
Celestial AI has raised $580M in total, most recently a Series C1 of $250M in Mar 2025.
Is Celestial AI publicly traded — can you buy Celestial AI stock?
No. Celestial AI is a private company — its shares are not listed on any exchange and there is no ticker. The routes to exposure are pre-IPO secondary marketplaces and funds (accredited investors), employee tender offers when the company runs one, and public companies with read-through exposure. QuantLogix maps every route it can verify for Celestial AI on its Pre-IPO Access Desk.
Answers are derived from the roster record shown on this page — filing status, last round and confirmed marks. Where the record is silent, the answer says so rather than guessing.
Company Profile
CEO
Dave Lazovsky
Founded
2020
HQ
Santa Clara, CA
Employees
~200
Total Raised
$580M
Growth
Series C1 growth; early customer engagements with hyperscalers
Last Round
Series C1 — $250M (Mar 2025) · Lead: Fidelity Management & Research
IPO Status
private
Fundraising Status
Series C1 · $250M · 1y 7mo ago
privateTotal raised $580M
Secondary Market
Implied price / share
$17.37
Secondary price return by period
Implied per-share price from private secondary transactions, as of Jun 2026. This is a point estimate, not a quote — the feed carries no bid, ask or spread, and a secondary print is evidence of what someone paid on that date rather than a live market. Compare across every tracked name →
Latest Funding Round
Round
Amount
Date
Lead Investor
Post-Money
Series C1
$250M
Mar 2025
Fidelity Management & Research
—
Talent Signal
Hiring trend
▶ Hiring steady
0% vs 2026-08
Open roles
21
via careers page
Product-build share
33%
engineering, research, product, design
Trajectory
steady
balanced build + GTM — 33% builders vs 67% go-to-market/G&A — scaling both sides.
Actively hiring with no tracked executive churn.
Open roles by month
Open roles by function
■ product-building ■ go-to-market / G&A
Security SolutionsProduct Security CenterData Infrastructure for the AI EraAccelerated infrastructure for connectivity and custom compute[Security Solutions](https://www.marvell.com/support/security-solutions.html)Marvell Enables AI Infrastructure
Counted from Celestial AI's live job board as of 2026-09-15; role functions classified from posting titles. Open-role counts are an activity signal, not headcount. Refreshed monthly.
Founders & Key People
Dave LazovskyPhil Winterbottom
Investors
Fidelity · U.S. Innovative Technology Fund · BlackRock · AMD Ventures · Temasek · Tiger Global
Products
Photonic Fabric optical interconnect platform
Optical I/O chiplets for accelerator-to-accelerator communication
OCS (Optical Circuit Switch) reference designs for AI training
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2025-Q1. Refreshed quarterly.