# Celestial AI

> Celestial AI built Photonic Fabric, an optical interconnect platform that moves data among processors and memory with light rather than relying solely on copper. Its chiplets, switch systems and packaging IP target hyperscalers and semiconductor companies building multi-rack AI systems. Founded in 2020, the Santa Clara company raised more than $520 million, won early design engagements with unnamed hyperscalers, and was acquired by Marvell in February 2026 for $3.25 billion upfront plus as much as $2.25 billion in performance-based stock.

- **Founded:** 2020
- **Headquarters:** Santa Clara, United States
- **Founders:** David Lazovsky (Co-Founder and CEO), Preet Virk (Co-Founder and COO), Michelle Tomasko (Co-Founder and VP Software)
- **Products:** Photonic Fabric, PFLink, PFSwitch, OMIB, Photonic Fabric Appliance
- **Notable:** Validated a complete electrical-optical-electrical Photonic Fabric silicon link in 2023., Announced design-in activity with lead hyperscaler and semiconductor customers in 2024., Raised more than $520 million across disclosed rounds by the final Series C1 close in 2025.

## Products & services

- **Photonic Fabric** — The underlying optical interconnect platform, designed to move data directly into compute, memory and switch silicon across package, system and rack distances.
- **PFLink** — A photonic link offered as co-packaged chiplets or licensable IP for XPU and switch connectivity; Marvell cites a Gen2 target of up to 50 meters, hundreds of terabits per package and 2.5 pJ/bit for a full electrical-optical-electrical link.
- **PFSwitch** — A rack-scale, low-latency scale-up switch designed for high-bandwidth communication among AI accelerators, with support for in-network memory and collective operations.
- **OMIB** — Optical Multi-chip Interface Bridge packaging technology that helps integrate photonics close to ASICs, XPUs, switches or memory.
- **Photonic Fabric Appliance** — A proposed photonic-enabled switch and memory subsystem combining HBM3E, DDR5 and optical switching; a 2025 technical paper described up to 32 TB of shared memory and 115 Tbps switching.
- **Management software** — Link-, system- and fleet-level software for telemetry, reliability, availability, serviceability and operational insights.

## Achievements

- Validated a complete electrical-optical-electrical Photonic Fabric silicon link in 2023.
- Announced design-in activity with lead hyperscaler and semiconductor customers in 2024.
- Raised more than $520 million across disclosed rounds by the final Series C1 close in 2025.
- Named a Gold-level honoree in the 2025 Laser Focus World Innovators Awards for Photonic Fabric.
- Published a 2025 technical paper describing a Photonic Fabric Appliance with up to 32 TB of shared memory and 115 Tbps all-to-all switching.
- Acquired by Marvell in February 2026 for $3.25 billion upfront, with up to $2.25 billion in additional stock contingent on revenue milestones.

## Latest updates

- **2025-03** — Raised an initial $250 million Series C1 round led by Fidelity at a reported $2.5 billion valuation.
- **2025-08** — Expanded the Series C1 to a $255 million final close, bringing total disclosed funding above $520 million.
- **2025-12** — Marvell announced an agreement to acquire Celestial AI for $3.25 billion upfront and up to $2.25 billion in performance-based stock.
- **2026-02** — Marvell completed the acquisition; Celestial AI's people and technology joined Marvell's Data Center Group.

## Links

- Website: https://www.celestial.ai
- LinkedIn: https://www.linkedin.com/company/celestial-ai

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Profile page: https://yespress.io/celestial-ai
Published by YesPress — https://yespress.io
Last updated: 2026-09-28