The 9 buzziest startups from Y Combinator’s latest Demo Day, according to VCs | TechCrunch0

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• September 14, 2026

Another Y Combinator Demo Day took place on Thursday, but this batch looked a little different. While every cohort brings a fresh wave of founders, the startups presenting this week skewed far more toward deep tech than in past years. As we do every quarter, TechCrunch asked early-stage VCs to name the hottest startups in