Krux
March 5, 2026
Ayar Labs Raises $500M at $3.75B Valuation
Published: March 5, 2026 at 12:41 AM
Updated: March 5, 2026 at 12:41 AM
100-word summary
Ayar Labs just closed a $500 million Series E at a $3.75 billion valuation, led by Neuberger Berman with backing from Nvidia, AMD, and MediaTek. The startup makes optical chiplets that replace copper wires inside AI data centers, promising faster data transfer with less heat. The investor lineup tells the story: chip giants need someone to solve the wiring problem before AI clusters melt down. Ayar is opening a Taiwan office to ramp production, signaling this tech is moving from lab demos to actual server racks. The company has now raised $870 million total. When both Nvidia and AMD write checks to the same startup, they're betting the bottleneck isn't...
What happened
Ayar Labs just closed a $500 million Series E at a $3.75 billion valuation, led by Neuberger Berman with backing from Nvidia, AMD, and MediaTek. The startup makes optical chiplets that replace copper wires inside AI data centers, promising faster data transfer with less heat.
Why it matters
The investor lineup tells the story: chip giants need someone to solve the wiring problem before AI clusters melt down. Ayar is opening a Taiwan office to ramp production, signaling this tech is moving from lab demos to actual server racks. The company has now raised $870 million total. When both Nvidia and AMD write checks to the same startup, they're betting the bottleneck isn't compute anymore—it's moving data between chips fast enough to keep them busy.