SIL-006 Silicon & Compute · Private
Lightmatter
Photonic interconnects that link AI chips with light.
- Founded
- 2017
- 9 years ago
- Total raised
- $822M
- Disclosed equity, Sep 2026
- Team
- 372
- Headcount, Sep 2026
- Latest round
- Series D
1 General description
MIT spinout building silicon photonics that move data between processors optically instead of over copper. Its Passage M1000 is a 3D photonic interposer offering 114 Tbps of optical bandwidth for large AI chip packages.
2 Features
3 Specifications
| Parameter | Value | Notes |
|---|---|---|
| Category | Silicon & Compute | Pin 01, black band |
| Flagship product | Passage M1000 | |
| Headquarters | Mountain View, United States | SF Bay Area hub |
| Status | Private | |
| Business model | B2B | Sells to businesses |
| Backers | T. Rowe Price, Fidelity, GV | Through Series D |
| Website | lightmatter.co ↗ | |
| Profiles | LinkedIn ↗ |
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