Developer Chris Lu analyzed all 196 companies accepted into Y Combinator's Spring 2026 batch. The big takeaway: LLM agents have gone from a high-bar concept to table stakes in just one year.
https://twitter.com/chris__lu/status/2066199289546637600
Of the 196 startups, 137 are building agents — a staggering 70%. Overall, 95% of the batch involves AI in some form, and 80% are AI-native, outnumbering all other technology categories combined. Data infrastructure comes in second with 38 companies, followed by computer vision, robotics, and voice tech.
When it comes to business models, the batch is overwhelmingly B2B: 62% of companies sell to other businesses, while only 12 are B2C. The most common pitch is "agent as a service" (AaaS), with 86 companies — 44% of the entire batch — pursuing that same model. When dozens of teams target the same opportunity, success hinges less on technical differentiation and more on how deep you go in a vertical and how fast you can ship.
It's not all software. Defense tech and hardware are seeing a resurgence, with about 13 defense, drone, and aerospace companies. Highlights include drone maker Tenet, counter-drone system 9 Mothers, and nuclear reactor designer Apollo Atomics. Another 6 startups are building infrastructure for prediction markets.
Founder backgrounds also poke holes in the college dropout myth. 70% of founders have technical backgrounds, 49% of companies are all-tech teams, only 5% of founders hold PhDs, and a mere 3% are dropouts. As for where they came from: Amazon and AWS alumni lead with 33 founders, followed by Meta (17), Google and DeepMind (17), and Microsoft (12). Top schools are Stanford (24), Berkeley (21), and MIT (15).