Fundraising Fox

Lumai

5 known investors

Lumai develops an optical AI accelerator that uses 3D optical components instead of silicon-only technology to run large AI workloads faster and with lower power and cost. The processor targets hyperscale AI inference and has been demonstrated running Llama models.

AI & Machine LearningDeep TechHardware

Founders & leadership

JSJames Spall
James SpallinFounder
XG
Xianxin GuoinFounder

Investors · 5

Runa CapitalSofia · $500K – $5M
Journey Venturesreported
LIFTTreportedTorino
PhotonVenturesreportedHilversum · $1.1M – $2.7M
Qubits VenturesreportedPasadena

Funding

SEC filings, press & company announcements

$10M disclosed across 1 of 2 rounds · 2025–2026

Source: company announcements and press reports — follow each round's link for the claim.

In the news

Lumai raises $10 million for its optical processing technology - DCDdatacenterdynamics.com · Jun 2026Lumai’s Photonic Chip Harnesses Light for Big AI Compute Speedup - AIwirehpcwire.com · May 2026Lumai Raises More Than $10M in Funds, Brings its Optical Processing Breakthrough Forward to Address Limitations of AI Computeenterpriseaiworld.com · Apr 2025Lumai raises $10m to revolutionise AI with optical techdatacenter.news · Apr 2025Lumai raises $10 millioncoverager.com · Apr 2025Lumai secures nearly £8 million in funding - The Oxford Trusttheoxfordtrust.co.uk · Apr 2025

Frequently asked questions

What does Lumai do?
Lumai develops an optical AI accelerator that uses 3D optical components instead of silicon-only technology to run large AI workloads faster and with lower power and cost. The processor targets hyperscale AI inference and has been demonstrated running Llama models.
Who founded Lumai?
Lumai was founded by James Spall, Xianxin Guo.
Who are Lumai's investors?
Lumai's investors include Runa Capital, Journey Ventures, LIFTT, PhotonVentures, Qubits Ventures.
How much funding has Lumai raised?
Lumai has disclosed $10M raised across 1 of its 2 known rounds.