Celestial AI: AI Infrastructure and Photonic Interconnects

Key Features

• Photonic Fabric Platform

  An optical interconnect technology that uses light to move data for AI compute scaling.

• PFLink

  A connectivity chiplet or licensable IP that supports high-bandwidth data movement.

• PFSwitch

  A low-latency, high-bandwidth scale-up switch designed to connect XPUs across racks.

• OMIB

  An in-package die-to-die interconnect that supports the integration of multiple reticle-sized die into a single package.

• In-Network Computing

  Support for processing and computing functions within the network fabric.

• High-Capacity Memory Integration

  Supports the connection of high-performance, high-capacity memory across the scale-up network.

Use Cases

• AI Model Training

  Supporting the movement of large datasets across compute clusters during the training of large-scale AI models.

• AI Inference Scaling

  Supporting inference for models requiring larger batch sizes and increased context lengths.

• Hyperscale Data Center Infrastructure

  Building scale-up domains of thousands of XPUs across multiple racks using optical interconnects.

• Die-to-Die Packaging

  Interconnecting multiple large die within a single package to support compute density.

FAQ

What is Celestial AI's Photonic Fabric?

It is an optical interconnect technology platform that uses light to move data, supporting high bandwidth and low latency for AI compute scaling.

Who is this technology designed for?

It is primarily designed for enterprise companies and hyperscale cloud providers managing AI data centers.

Has Celestial AI been acquired?

Yes, Celestial AI was acquired by Marvell Technology, with the acquisition completed on February 2, 2026.

What are the different product forms available?

The technology is available as PFLink (connectivity chiplet or IP), PFSwitch (scale-up switch), and OMIB (die-to-die interconnect).