Ayar Labs raises $500M at $3.75B valuation as investors chase AI semiconductor plays beyond Nvidia
The optical interconnect startup's Series E round draws heavyweight backers including AMD, Nvidia, and Qatar's sovereign wealth fund, signaling a massive bet on post-copper computing infrastructure.
Ayar Labs has raised $500 million in a Series E funding round that values the AI semiconductor startup at $3.75 billion as investors broaden their exposure beyond leading chipmakers such as Nvidia.
The round was led by Neuberger Berman and brings Ayar Labs’ total funding to $870 million. New investors included ARK Invest, Insight Partners, Qatar Investment Authority, Sequoia Global Equities and 1789 Capital. Strategic investors AMD, MediaTek, Alchip Technologies and Nvidia also participated.
Ayar Labs develops co packaged optics technology that uses light rather than electrical signals to move data between AI processors and memory. The company says the approach can address bandwidth and power constraints that emerge as AI systems expand across thousands of chips.
The company plans to use the new capital to expand production and testing capacity, grow its global operations and accelerate deployment of its optical interconnect products. The expansion includes its new office in Hsinchu, Taiwan.
Ayar Labs has also joined Nvidia’s NVLink Fusion ecosystem, allowing its optical technology to work with Nvidia based rack scale systems and custom AI chips. The integration is intended to help data center operators increase bandwidth while reducing power use as AI clusters grow.
The funding reflects growing investor interest in companies supplying the networking, memory, cooling and connectivity technology required to support AI infrastructure. Ayar Labs competes with optical networking companies including Celestial AI, Lumentum and Coherent.