Neuberger Berman leads round joined by premier institutional investors including ARK Invest, Insight Partners, Qatar Investment Authority (QIA), Sequoia Global Equities, and 1789 Capital alongside key commercial strategic investors AMD, Alchip, MediaTek, and NVIDIA

Ayar Labs, the leader in co-packaged optics (CPO) solutions for AI scale-up, announced the closing of $500 million in Series E funding led by Neuberger Berman. The company will use the funds to scale high-volume production and test capacity to accelerate the deployment of its CPO solution. This brings the company’s total funding to $870 million and raises the company’s valuation to $3.75 billion.

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Ayar Labs Closes $500M Series E, Accelerates Volume Production of Co-Packaged Optics

“AI infrastructure is hitting a power wall driven by interconnect inefficiency. As bandwidth demands explode, copper becomes the bottleneck — consuming too much power and limiting AI throughput per watt and per dollar,” said Mark Wade, CEO and co-founder of Ayar Labs. “Co-packaged optics overcomes these barriers, enabling thousands of GPUs to operate as a unified system. This funding fuels our ability to meet the demands of hyperscale AI.”

The round aligns premier capital investors with industry leaders across the AI and semiconductor ecosystem, reinforcing the market’s support for Ayar Labs’ technology leadership and production-ready CPO solution for AI scale-up. New investors include Alchip Technologies, ARK Invest, Insight Partners, MediaTek, Qatar Investment Authority (QIA), Sequoia Global Equities, and 1789 Capital. They join existing financial institutions such as Advent Global Opportunities, Boardman Bay Capital Management, IAG Capital Partners, Light Street Capital, and Playground Global, and existing strategic investors, AMD Ventures, and NVIDIA.

"Today’s AI infrastructure buildout is one of the largest capital deployment opportunities of our generation, and data center interconnect has quickly emerged as the most critical bottleneck,” said Gabe Cahill, Managing Director, Neuberger Berman. “Ayar Labs’ execution against key customer milestones is driving strong market conviction in its technology leadership. We believe that both ongoing and new strategic investments from industry leaders in this round reinforce this momentum. With a production-ready scale-up co-packaged optics solution and deep ecosystem integration, we are excited to lead this round and help accelerate the paradigm shift taking place in AI infrastructure.”

Neuberger Berman will take a board observer role, bringing deep experience in scaling category-defining technology companies. In addition, the investment participation of MediaTek and Alchip Technologies further strengthens Ayar Labs’ alignment with key custom ASIC design ecosystem partners.

Ayar Labs will use the new funds to scale high-volume production and test capacity, expand global operations, including at its new Hsinchu, Taiwan, office, strengthen ecosystem partnerships, and accelerate the deployment of its CPO solution.

The company’s AI scale-up CPO solution unlocks AI performance and profitability by replacing bandwidth-limited copper interconnects with optical connectivity that provides the performance and efficiency gains required for next-generation AI infrastructure. At the heart of the solution is the TeraPHY™ optical engine, built on the standard form factor, manufacturing, and packaging flows used by major accelerator and switch vendors for seamless integration into existing customer designs.

About Ayar Labs

Ayar Labs is transforming AI infrastructure with the industry’s first proven co-packaged optics (CPO) solution manufactured in partnership with the world’s leading semiconductor ecosystem. By unlocking performance gains and reducing workload costs in a power-constrained environment, Ayar Labs’ TeraPHY™ optical engines are key to unleashing next-generation AI scale-up. Founded in 2015, Ayar Labs is funded by domestic and international venture capital firms, as well as strategic investors including AMD, Alchip Technologies, MediaTek, NVIDIA, and VentureTech Alliance. For more information, visit https://ayarlabs.com.

Ayar Labs. Ayar Labs, the Ayar Labs logo, TeraPHY, SuperNova, and other Ayar Labs marks are trademarks of Ayar Labs. All third-party trademarks are the property of their respective owners.

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