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Lightmatter competitors & alternatives
The 12 closest competitors and alternatives to Lightmatter among semiconductors companies — ranked by similarity to what Lightmatter actually does, not by market-cap band.
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About Lightmatter
Lightmatter, Inc. is a computer hardware manufacturing company that merges photonics and computing to build advanced optical technology and supercomputers. The company is headquartered in Mountain View, California, with additional offices in Boston.
Lightmatter at a glance
Lightmatter is a semiconductors company headquartered in United States, founded in 2017. It has raised at least $709.5M across the 5 funding rounds on record. Its most recent funding round raised $350M in October 2024. Xcout tracks 41 named people at Lightmatter, including Nicholas C. Harris (President and Chief Executive Officer). Xcout recorded 85 job postings from Lightmatter in the last 90 days, naming tools such as Jira, GitHub, GitLab.
Lightmatter leadership
- Nicholas C. HarrisPresident and Chief Executive Officer
- Simona JankowskiCFO
- Nicholas HarrisFounder, CEO
- Darius BunandarFounder, Chief Scientist
- Thomas GrahamFounder, Head of Machine Learning
- Beth KeilSVP, People and Culture
35 more named people on record for Lightmatter, with roles, board committees and tenure — see the full roster →
Lightmatter funding rounds
At least $709.5M raised across the 5 rounds on record. Every round on record:
| Date | Round | Amount | Investors |
|---|---|---|---|
| — | $350M | 3 named | |
| SEC Form D filing | $155M | — | |
| Series C | $160M | 7 named | |
| SEC Form D filing | $22.2M | — | |
| — | $22.2M | 8 named |
Who invested in each round, lead investors, valuations and the co-investor graph — open the full funding history →
Hiring at Lightmatter
Xcout recorded 85 job postings from Lightmatter in the last 90 days, from a hiring record Xcout has kept since June 2026.
Tools named in Lightmatter's job postings
The weekly hiring trend, the roles and locations behind it — see Lightmatter's hiring signals →
Top 12 Lightmatter competitors
Ranked by semantic similarity — how close each company is to Lightmatter by what it does, using Xcout's live company graph. Click any company for its full profile, or its competitor set.
Similar semiconductors company
Ayar Labs is a computer hardware manufacturing company specializing in co-packaged optics for AI scale-up and high-performance computing. Backed by semiconductor industry leaders, the company is headquartered in San Jose, California.
Similar semiconductors company
Luminous Computing develops advanced computing infrastructure with primary operations centered in Mountain View, California.
Photonics, Semiconductor
Smart Photonics operates as a pure-play foundry for integrated photonics, manufacturing Photonic Integrated Circuits (PICs) that use light to create energy-efficient and fast microchips. The company provides design kits, multi-project wafer services, and manufacturing solutions for clients in sectors such as data and telecommunication, medical applications, and sensing technologies like Lidar.
Similar semiconductors company
Neurophos Inc. is an AI chipmaker headquartered in Austin, Texas, that builds innovative photonic artificial intelligence processors.
Similar semiconductors company
zeroRISC Inc. is a technology company headquartered in Boston, Massachusetts, that develops trusted open-source silicon and hardware security solutions built on the OpenTitan project.
Similar semiconductors company
Tenstorrent Inc. is a computer hardware and technology solutions company originally headquartered in Toronto, Canada, with additional offices in the U.S. and internationally.
Similar semiconductors company
Si-Ware Systems is a deep-tech innovation powerhouse and measuring and control instrument manufacturer located in Menlo Park, California, redefining optical sensing and digital-physical integration.
Semiconductors & Photonics
NantOptiFab produces TFLN and silicon wafers and manufactures advanced photonic chips and devices in-house. Operating with a domestic supply chain from its facilities in California, the company serves the telecommunications, artificial intelligence, defense, and quantum technology sectors.
Similar semiconductors company
Siliquent Technologies is a technology developer headquartered in Mountain View, California, specializing in innovative semiconductor and networking technology.
Similar semiconductors company
Metalenz develops metasurface optics to enable the next generation of optical sensing. The company manufactures flat lenses directly in semiconductor foundries to provide precise control and high-performance optical data from a single compact element.
Photonics & Semiconductors
Axalume develops lasers, photonic integrated circuits, and electronic driver/receiver chipsets designed to enable optical data communication within data centers. The company's co-integrated electronic and photonic technology aims to provide server and network operators with higher bandwidth, increased space efficiency, and reduced power consumption.
Similar semiconductors company
Black Semiconductor develops integrated graphene photonics technology that connects electronic chips using optical signals instead of traditional copper connections. The company's technology aims to enable faster, cooler, and more energy-efficient data transfer for data centers and compute architectures.
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