Lumai
Lumai is an artificial intelligence company in Oxford, United Kingdom, founded in 2022. It has raised $1.5M across 2 rounds, most recently a Venture Round in April 2025.
Optical Compute for the Inference Era
- Headquarters
- Oxford
- Employees
- 11–50
- Founded
- 2022
- Business Model
- B2B
- Website
- lumai.ai
- Total Funding
- $1.5M
- Last Round
- Venture RoundApr 2025
- Rounds
- 2
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
Indexed holds 2 funding rounds and 8 investors for this company. The full record is or through the API.
About
Lumai develops optical compute hardware for AI inference, using light to run neural networks with up to 50x performance and about 90% less power than conventional chips, without liquid cooling. The architecture computes in three-dimensional volume rather than on a two-dimensional chip, supports billion-parameter large language models including demonstrated Llama workloads, and is built on industry-standard processes for datacenter-scale deployment. A three-tier memory design targets efficient key-value cache access for hyperscale inference.
Summary
It lists 11–50 employees. It has raised $1.5M in total across 2 rounds, most recently a Venture Round in Apr 2025. Investors include Constructor Capital, Innovate UK and IP Group.
Tech & App Stack
3 technologies & apps tracked
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Funding History
Apr 2025
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Funding: Grant through Venture Round. Amounts, valuations, and investors where available.
Investors
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