Lumai funding news – Oxford-based Lumai Raises More than $10Million in Funding
Apr 3, 2025 | By Startuprise

Lumai, an AI accelerator startup using optics to address global computational challenges, announced that it has secured more than a $10 million investment.
SUMMARY
- Lumai, an AI accelerator startup using optics to address global computational challenges, announced that it has secured more than a $10 million investment.
- Lumai is enabling AI deployment at scale with the fastest, most energy-efficient AI processor for datacentres.
Lumai’s revolutionary optical computing technology will help AI data centers dramatically reduce costs and boost performance – while simultaneously minimizing energy consumption.
The round was led by VC investor Constructor Capital, which works with visionary founders building ground-breaking companies across the deep tech sector.
Read also - EcoDataCenter funding news – EcoDataCenter Secures €450 Million in Funding
It was also supported by existing investor IP Group,alongside new investors PhotonVentures, Journey Ventures, LIFTT, Qubits Ventures, State Farm Ventures, and TIS Inc. Lumai will use this investment to support its next stage of growth – advancing product development, doubling its headcount, and expanding its U.S. presence.
This investment comes at a pivotal time for the industry as power-hungry AI models and the drive to artificial general intelligence are pushing silicon-based compute to its limits. With data center power use in the U.S. expected to triple by 2028, consuming up to 12% of the country’s power, the time is now to address the performance and sustainability challenges plaguing the industry.
A Game-Changer for AI Compute
Spun out of the University of Oxford, Lumai is tackling the limitations of AI compute by using optical processing to accelerate large language models (LLMs) and other transformer-based AI. Lumai has succeeded where others have failed, overcoming the scalability challenges of optical computing.
Its technology processes AI’s core arithmetic operations within optical beams traveling through 3D space, bypassing the limits of silicon GPUs and integrated photonics. By utilizing low-cost optical components, the PCIe form factor enables cost-effective, high-performance AI inference, positioning Lumai as a key enabler of AI’s future.
The company’s accelerator will cut AI inference costs to one-tenth of today’s top solutions. Lumai’s unique design will deliver 50 times the performance of silicon-only accelerators while using just 10% of the power required for AI in data centers, lowering both capital costs and total cost of ownership.
Tim Weil, CEO and co-founder at Lumai, commented, “The future of AI demands radical breakthroughs in computing. The cost of current LLMs is unsustainable, and next-generation AI won’t happen without a major shift. Lumai’s innovative optical computing design overcomes the scalability challenges that have held others back and dramatically reduces power consumption, which will drive down the cost of AI.”
Dr. Serg Bell, Founder and Chairman of Constructor Capital said, “Life and intelligence are a large carbon-and electron-based neural model trained over 2 billion years, Fossil fuels are a byproduct of this evolution, and they may not generate enough energy to create a better model if we continue using electron-based computation. We need more efficient, faster energy sources for the next generation of humanity’s neocortex: Artificial General Intelligence. Photons are the only known choice. Lumai’s technology is a significant step forward in improving matrix multiplication, similar to the advancements quantum computers offer for other computational scenarios.”
Dr. Lee Thornton, partner – deeptech at IP Group, added, “Having solved the challenges of optical compute to provide a low-cost, scalable solution, Lumai’s technology has the potential to transform the future of AI. We are proud to continue supporting Lumai as it embarks on the next phase of its journey.”
Ewit Roos, General Partner, PhotonVentures said, “Lumai isn’t just innovating – it is fundamentally reshaping the future of AI compute, Lumai presents one of the most compelling opportunities in next-generation data center technology, positioning it at the forefront of the AI revolution.”
About Lumai
Lumai is enabling AI deployment at scale with the fastest, most energy-efficient AI processor for datacentres. The company is solving the challenge of how to meet the ever-increasing AI performance demand while minimising energy consumption.
Recommended Stories for You

Le Fourgon funding news – Le Fourgon Secures €8.2 Million Extension to its Series A Round Funding
Kailee Rainse Jan 30, 2025