Lightmatter

A Giant Leap

Founded 2017

Mountain View, United States 368 employees Series C Total: $422.00M AI, Hardware +2

General Information

Company Name Lightmatter

Founded Year 2017

Location

Mountain View, United States

Employees 368

Industries AI, Hardware, Semiconductor +1

Funding Stage Series C

Business Model B2B, Platform, B2B2B

Revenue Model Product Sales, Licensing

Hiring 29 roles posted in the month to 26 Sep 2026

Offices as of Sep 2026

Mountain View, United States Boston, United States Toronto, Canada

Social

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Recorded by Bounce Watch from public sources. Every entry below carries the date we observed it, and when we have not looked recently the page says so rather than leaving silence to imply nothing happened.

Event Participation Sep 28, 2026

Lightmatter is showcasing its industry-leading technology as an exhibitor at @OpenComputePrj's Global Summit, located at booth A36.

Product Launch Sep 25, 2026

Lightmatter details their open-source modeling tool ScaleScope, an analytical platform for AI training and inference performance, underpinning their recently published paper.

Award Received Sep 25, 2026

Lightmatter's research paper, "Accelerating Frontier MoE Training With 3D Integrated Optics", published in IEEE Micro, was recognized as an award-winning paper by IEEE.

Actively Hiring Sep 24, 2026

Hiring for 29 positions in the last 30 days.

In The News Sep 23, 2026

Featured on Digitimes: Lightmatter launches an optical module that cuts AI cluster fiber in half

New Partnership Sep 17, 2026

Lightmatter announced it joined the Open CPX MSA, aligning with the future of AI scaling through co-packaged optics.

+1 more signal in last 30 days

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AI Insight

Bounce Watch AI

1 month ago

Lightmatter is strategically gearing up for a significant period of expansion and market engagement by August 2026. This forward-looking strategy is evident through their planned recruitment of 60 new positions, an anticipated major website overhaul (70.67% change), and scheduled representation at the PECC Summit. These coordinated efforts suggest a concerted push towards scaling operations, enhancing their digital presence, and reinforcing industry visibility for their advanced photonic computing platform, likely in preparation for a major market unveiling.

Signal Types

Hiring Event Website Update

Strategic Labels

Planned Growth Market Expansion Prep Digital Transformation

Next Move: Product Launch

Impact: 8/10

Ideal For: AI Hardware Investors — Series C/D

About Lightmatter

Lightmatter, founded in 2017, is on a mission to drive technological breakthroughs by developing a powerful computation engine that will redefine the capabilities of computers and humans alike. Operating at the intersection of AI, Hardware, Semiconductor, and Machine Learning industries, this United States-based startup embodies its slogan, "A Giant Leap."

In a significant endorsement of its vision and potential, Lightmatter secured a $155.00M Series C investment on 19 December 2023. This latest funding round saw participation from a strong lineup of investors, including GV, Eastward Capital Partners, SIP Global Partners, and Viking Global Investors. This capital injection propels the firm towards its goal of engineering disruptive technology crucial for future discoveries and progress across various sectors.

Taxonomy: photonic computing, AI hardware, next-generation computing, processor performance, Moore's Law, Dennard Scaling, electronics, photonics, new algorithms, sustainable technology, compute chips, technology innovation, performance scaling, energy-efficient computing

Services & Products

Development of photonic chips and interconnects

Provision of high-bandwidth, energy-efficient networking solutions

Manufacturing of co-packaged optics and light engines

Supporting frontier-scale AI model training and inference

Target Customers

AI and data center operators Hyperscalers GPU cluster managers Companies involved in large-scale AI model training

Funding Rounds & Investors (5)

View All

Funding Stage	Amount	Investors	Lead Investors	Date
Series C	$155.00M	4	GV, Eastward Capital Partners +2	19 Dec 2023
Series C	$154.00M	6	GV, Fidelity +4	31 May 2023
Series B	$80.00M	-		06 Apr 2021
Series A	$22.00M	-		26 Feb 2019
Series A	$11.00M	-		05 Feb 2018

Latest News

View All

Lightmatter launches an optical module that cuts AI cluster fiber in half

Digitimes Sep 23, 2026

The AI Boom Is Fueling a Need for Speed in Chip Networking

Wired Nov 12, 2025

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FAQ About Lightmatter

A Giant Leap

Lightmatter was founded in 2017.

Lightmatter is headquartered in Mountain View, United States. As of Sep 2026, it also has offices in Boston, United States and Toronto, Canada.

Lightmatter operates in AI, Hardware, Semiconductor and Machine Learning. Its work centres on photonic computing, AI hardware, next-generation computing and processor performance. Its customers include AI and data center operators, Hyperscalers and GPU cluster managers.

Lightmatter has a B2B, Platform and B2B2B business model. Its revenue comes from Product Sales and Licensing.

Lightmatter has approximately 368 employees.

Lightmatter has completed 5 funding rounds, raising a total of $422.00M. The latest funding stage is Series C.

Lightmatter offers: Development of photonic chips and interconnects, Provision of high-bandwidth, energy-efficient networking solutions, Manufacturing of co-packaged optics and light engines, Supporting frontier-scale AI model training and inference.

Top alternatives and competitors to Lightmatter include Neurophos, Celestial AI, Tachyum, PsiQuantum, d-Matrix. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.

Lightmatter and Neurophos are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

Source: BounceWatch company record for Lightmatter, https://bouncewatch.com/company/lightmatter, updated 27 September 2026. When citing, please name BounceWatch and link this page.

Lightmatter

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Services & Products

Target Customers

Funding Rounds & Investors (5)

Latest News

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FAQ About Lightmatter