Lightmatter
Lightmatter is a Photonics & Interconnects company founded in 2017 and based in Boston, USA. It has raised $667M in total funding, most recently a Series D in 2024 at a $4.4B valuation.
Lightmatter builds photonic processors and optical interconnects to accelerate AI compute and reduce data-center power consumption. Raised $400M+ including Series D in 2024; Passage interconnect fabric announced. Partnerships with GlobalFoundries and others.
Lightmatter's silicon photonics approach addresses the power and bandwidth walls limiting electronic AI accelerators.
lightmatter.co ↗·Photonics & Interconnects·USA·private 
