Krux
March 4, 2026
Nvidia and AMD Back $500M Bet on Optical Chips
Published: March 4, 2026 at 6:39 AM
Updated: March 4, 2026 at 6:39 AM
100-word summary
Ayar Labs just closed a $500 million Series E at a $3.75 billion valuation, with backing from both Nvidia and AMD. The company makes co-packaged optics, which replace electrical wiring inside data centers with light-based connections to move data faster between AI chips. The investor list reads like a who's who of AI infrastructure: ARK Invest, Sequoia, and Qatar's sovereign wealth fund all joined. That rivals are betting on the same underlying technology reveals something: the real AI bottleneck isn't smarter models but simply getting data between processors fast enough.
What happened
Ayar Labs just closed a $500 million Series E at a $3.75 billion valuation, with backing from both Nvidia and AMD. The company makes co-packaged optics, which replace electrical wiring inside data centers with light-based connections to move data faster between AI chips. The investor list reads like a who's who of AI infrastructure: ARK Invest, Sequoia, and Qatar's sovereign wealth fund all joined.
Why it matters
That rivals are betting on the same underlying technology reveals something: the real AI bottleneck isn't smarter models but simply getting data between processors fast enough.