# Lumai: Computer hardware, Oxford, United Kingdom

> Lumai: Lumai Limited is a deep-tech company and University of Oxford spinout focused on advancing artificial intelligence infrastructure through fully...

Source: https://millionrounds.com/startup/lumai-3 (Millionrounds; every figure on the page links to its filing or article)

United Kingdom · [Computer hardware startup](https://millionrounds.com/companies)

# Lumai

Lumai Limited is a deep-tech company and University of Oxford spinout focused on advancing artificial intelligence infrastructure through fully optical computing.

Email

Funding reported Last round: Venture (Round not Specified)

Computer hardware Oxford, United Kingdom

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Company summary

- **Founded:** 2022 4 years old
- **Team:** 26 11 to 50 people
- **Funding reported:** 13.8M as listed, currency not stated
- **Last round:** Venture (Round not Specified) Apr 2025

How sure we are

- ✓ **Listed** We know it exists and what it does
- 2 **Funding reported** A company dataset reports a raise
- 3 **Observed** A filing or a dated announcement confirms a round

No round for Lumai has been confirmed by a filing or an announcement yet, so nothing here counts toward an investor's record. [How we decide](https://millionrounds.com/methodology)

## About Lumai

Lumai Limited is a deep-tech company and University of Oxford spinout focused on advancing artificial intelligence infrastructure through fully optical computing.

Founded in late 2021, Lumai aims to overcome the limitations of traditional silicon-based hardware by utilizing photons instead of electrons for computation. This innovative approach allows Lumai to deliver AI processors that achieve up to 50 times higher performance and 90% lower energy consumption compared to conventional GPU architectures. The company's flagship product, the Lumai Iris Inference Server, launched in April 2026, is designed for real-time inference of billion-parameter Large Language Models. Lumai primarily operates as a B2B hardware and technology licensing company, selling optical inference servers and providing technology licensing, software tools, and consulting services. Targeting data centers, cloud computing providers, and enterprise AI users, Lumai is positioned to support high-performance computing needs while promoting energy efficiency and sustainability in AI deployment.

## What company datasets say Lumai raised

Funding, as reported

Reported in all **13.8M** in the source's currency

Last round **Venture (Round not Specified)**

Last round size **10M**

Last round date **Apr 2025**

## Founders and team

From Lumai's own website: 2 founders, 4 on the team.

**Dr. Xianxin Guo** CEO & Co-Founder

**Dr. James Spall** CTO & Co-Founder

- **Elena Crocetti** Head of Finance & Operations
- **Enzo D'Alessandro** Head of Engineering
- **Phil Burr** Head of Product
- **René Bonvanie** Chair of the Board

## On 4 portfolio pages

Investors who name them

- [Constructor Capital](https://millionrounds.com/fund/constructor-capital)
- [PhotonVentures](https://millionrounds.com/fund/photonventures)
- [Blankspace Ventures](https://millionrounds.com/fund/blankspace-ventures)
- [Touchstone Innovations](https://millionrounds.com/fund/touchstone-innovations)

Each firm lists Lumai on its own website. That is the firm's claim, a weaker thing than a round we watched, but a named source.

## The company, in detail

What they build

Known for

photonic chip integration performance vs silicon trade-offs photonic computing information technology & services light-based data movement ai inference acceleration energy-efficient ai hardware optical vector operations environmental sustainability disruptive optical technology interoperability with digital electronics information technology semiconductor and other electronic component manufacturing environmental services performance roadmap energy efficiency

Built with from their website

Docker Google Tag Manager Amazon CloudFront WordPress.org Apache Lucene Canal Flow CloudFlare Viewport Meta Hubspot

+8 more

PostgreSQL Webflow Hosting InvGate Service Management CloudFlare CDN Google Font API Microsoft Exchange ArcGIS Spatial Analyst MySQL

- **Sector:** Computer hardware
- **Industry code:** NAICS 334111, 334413, SIC 3571, 3674
- **Region:** England

## Computer hardware in United Kingdom

Startups like it

- [**Quantum Motion** London · founded 2017 *Raised*](https://millionrounds.com/company/quantum-motion)
- [**Iceotope** Catcliffe · founded 2005](https://millionrounds.com/startup/iceotope)
- [**Light Blue Optics** Cambridge · founded 2004](https://millionrounds.com/startup/light-blue-optics)
- [**Tingbot** London · founded 2015](https://millionrounds.com/startup/tingbot)
- [**Optalysys** Pontefract · founded 2013](https://millionrounds.com/startup/optalysys)
- [**Giraffe360** London · founded 2016](https://millionrounds.com/startup/giraffe360-3)
- [**Salience Labs** Oxford · founded 2020](https://millionrounds.com/startup/salience-labs)
- [**R3-IoT Ltd.** Glasgow · founded 2018](https://millionrounds.com/startup/r3-iot-ltd)

## Is this your company?

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