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Y Combinator founders seized the AI boom in 2025, with increasingly younger teams securing millions in seed funding.
Founders launched companies ranging from military night vision goggles to US work visa automation and AI-native video meeting platforms. One common thread: founders are getting younger, including teens who left MIT, Stanford, and even high school to attend the program. The median founder age of YC’s summer 2025 cohort was 24, down from 30 in 2022.
Founders are also harnessing AI to build faster. Some told Business Insider they were expected to arrive at Demo Day with more customers and clearer revenue signals.
Y Combinator says its batches are now growing revenue at roughly 10% week-over-week — a stat that’s remained consistent across the last six classes.
Below are the YC pitch decks we published in 2025 — a window into how early-stage founders are pitching in an era when AI is poised to reshape industries, and expectations for young founders are rising fast.
