The 9 buzziest startups from Y Combinator’s latest Demo Day, according to VCs

TechCrunch highlighted nine YC Demo Day startups drawing VC interest: Atomarine aims to launch floating nuclear-powered data centers with a gas-pilot by 2028, backed by $4 billion in LOI demand; Dipole Labs developed an optical switch that bypasses light-to-electric conversion for AI; Isengard manufactures jet-powered strike and counter-drones in the U.S., already earning $10 million; Lamb Labs produces “Model Processing Units” that embed AI weights in silicon to reduce inference energy; and a robotics company collects video from over 150 settings to train commercially viable robots.