Celestial AI

Celestial AI (celestial.ai) developed the Photonic Fabric, an optical interconnect technology platform aimed at improving data movement for AI systems—especially within racks, systems, and packages where electrical “beachfront” constraints can limit bandwidth, latency, and energy efficiency. The company’s core premise is that large AI workloads are increasingly constrained by memory capacity/bandwidth and data movement rather than compute, motivating an architecture that routes optical links “any point on the silicon” to the point of consumption, with claims of substantially higher bandwidth density and lower latency versus co-packaged optics approaches. Over time, Celestial AI positioned Photonic Fabric as a foundation for scale-up connectivity and disaggregated memory/compute designs, offering technology licensing as well as (at least in earlier stages) an Orion AI accelerator product path.

As of 2026-02-02, Celestial AI was acquired by Marvell Technology, Inc. and integrated into Marvell’s Data Center Group. Marvell’s acquisition communications describe Celestial AI’s Photonic Fabric chiplet approach as an all-optical scale-up interconnect enabling high bandwidth and reduced latency, including claims about a 16 Tb/s per chiplet figure and the ability to be co-packaged with custom XPUs and scale-up switches for large-scale deployments. Marvell also states it expects revenue contributions from Celestial AI starting in the second half of fiscal 2028, with ramp targets communicated in acquisition-related materials.