Lightmatter Raises $400M Series D to Revolutionize AI Supercomputing

Key Highlights:

  • Lightmatter raises $400M Series D, led by T. Rowe Price, reaching a $4.4B valuation.

  • Total capital raised to date now stands at $850M.

  • Funding will enable mass deployment of Passage™, the world’s fastest photonic engine.

  • Passage addresses AI cluster bottlenecks, improving bandwidth, performance, and power efficiency.

Notable Quotes:

“With Passage, the world’s fastest photonic engine, we’re setting a new standard for performance and breaking through the barriers that limit AI computing. This funding accelerates our ability to scale, delivering the supercomputers of tomorrow today.”

Nick Harris, Co-founder & CEO at Lightmatter

"Lightmatter has the technology, leadership, and team to bring the industry the future of computing through photonics."

Tony Wang, Portfolio Manager at T. Rowe Price Science & Technology Fund

"Photonics isn’t just a breakthrough; it’s the future of million-XPU data centers for AI."

Erik Nordlander, General Partner at GV

Our Take:

Lightmatter’s $400 million Series D round highlights the industry’s growing recognition of photonics as the solution to AI infrastructure bottlenecks. With the Passage engine, Lightmatter is positioned to reshape the future of AI supercomputing, offering unprecedented bandwidth, performance, and efficiency gains. As AI models continue to scale, Lightmatter's photonic technology is critical in overcoming the data movement challenges faced by traditional electronic interconnects. This funding round also solidifies Lightmatter’s leadership in the AI data center space and sets the stage for its continued growth in alignment with AI’s rapid evolution.

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