Lightmatter
Photonic chips for AI infrastructure that use light to move data between processors in AI supercomputers. The products include Passage photonic interconnects and Guide light engines.
Semiconductors & computeSilicon photonics for AI data centersMountain View, United States
FoundersSince 2017
- Valuation
- $4.4B
- Total raised
- $850M
- Last round · Oct 2024
- Series D
- Founded
- 2017
- Employees
- 310
- Quarters in VP50
- 3
Valuation
| Round | Date | Post-money valuation | Raised | Led by |
|---|---|---|---|---|
| Series C-2 | Dec 19, 2023 | $1.2B | $155M | GV (Google Ventures) and Viking Global Investors |
| Series D | Oct 16, 2024 | $4.4B | $400M | T. Rowe Price Associates, Inc. |
Post-money valuation at each priced round. Log scale.Hover a point for the round
Updated
In VP50
- Q4 2023: no place
- Q1 2024: no place
- Q2 2024: no place
- Q3 2024: no place
- Q4 2024: #44
- Q1 2025: #50
- Q2 2025: no place
- Q3 2025: no place
- Q4 2025: no place
- Q1 2026: no place
- Q2 2026: no place
- Q3 2026: #26
- Q4 2026: no place
Place by quarter since Q4 2023. Best place #26.
Funding rounds
DateRound · leadRaisedValuation
Feb 25, 2019Series A-1 · GV$22M—



