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

“TechCrunch reports that Y Combinator’s latest Demo Day showcased nine standout startups, many of which are pushing the boundaries of deep tech. The cohort includes Atomarine’s floating nuclear‑powered data centers, Dipole Labs’ optical networking hardware, Isengard Industries’ locally produced jet‑powered drones, and Lamb Labs’ custom inference chips, among others. These innovations promise to reshape data center efficiency, defense logistics, and AI hardware in the U.S., potentially lowering energy costs, boosting domestic defense manufacturing, and accelerating AI deployment across industries. Expert Analysis: The convergence of energy‑efficient data infrastructure and defense‑grade drone production signals a strategic shift toward resilient, domestically sourced technology stacks, which could reduce U.S. reliance on foreign supply chains and create high‑skill jobs in emerging tech sectors.”