Photonic AI Accelerators vs. GPUs – The Battle for AI’s Future in Efficiency, Cost, and Scale
Photonic AI chips in research tests achieved 150–160 TOPS/W, far outpacing GPUs at 20–30 TOPS/W. Early photonic systems cut power use by up to 90% and delivered 8× speedups on LLM inference. Startups and major chipmakers launched first photonic AI boards and optical interconnect pilots in 2024–2025. Lightmatter’s Passage optical link and Q.ANT’s photonic server are set to debut in 2025.