# CScale raises $145 million to develop optical links for gigawatt AI

> CScale announced a $145 million Series C round to build high‑speed optical interconnects aimed at supporting very large AI models.

Oossa · 2026-09-30 · https://oossa.com/en/cscale-raises-145-million-to-develop-optical-links-for-gigawatt-ai

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CScale, a startup in Palo Alto, announced it has closed a $145 million Series C financing round. The money will be used to develop optical interconnect technology that can handle the power needs of very large AI systems. The company says the links are meant for gigawatt‑scale AI workloads.

## The facts

- $145 million Series C funding announced
- Focus on optical interconnect for gigawatt‑scale AI

## Why it matters

Fast, power‑efficient connections are a bottleneck for scaling AI models, so this funding could speed up larger‑scale AI deployments.

## Sources & references

1. [CScale Exits Stealth With $145 Million to Build the Interconnect for Gigawatt-Scale AI](http://www.businesswire.com/news/home/20260930881741/en/CScale-Exits-Stealth-With-145-Million-to-Build-the-Interconnect-for-Gigawatt-Scale-AI/?feedref=JjAwJuNHiystnCoBq_hl-WsGkFyUNMTSNrPsg57HLEqqcp-o_pnudlUwsb5apQ1S4gUE65BTfjH3-pSuqdv0gW3cb3F4oTIgUqCPafFkgu5AneicJQDNboWvodvG82E0) – Business Wire, 2026-09-30

Last updated: 2026-09-30