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Lightmatter

Lightmatter, founded in 2017 and headquartered in Boston, Massachusetts, has raised a total of $850 million across multiple funding rounds, reaching a $4.4 billion valuation as of October 2024. The company develops 3D-stacked photonic chips that use light instead of electricity to enable ultra-fast, energy-efficient AI computing. Key investors include GV (Google Ventures), Viking Global Investors, and T. Rowe Price. With 145 employees, Lightmatter is revolutionizing high-performance computing for AI, cloud, and telecom sectors while expanding globally with new offices and advanced product innovations.