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Y Combinator S25: 166-startup batch offering $125K plus $375K SAFE for 7% equity.
Y Combinator's Summer 2025 batch comprised 166 companies in the quad-annual cohort model. Each company received $125,000 for 7% equity on a post-money SAFE, plus an additional $375,000 uncapped MFN SAFE, totaling $500,000. The S25 batch continues YC's steady-state operation of funding multiple cohorts per year with consistent terms and high quality across all classes. The cohort included founders building across all sectors: AI applications are fundamental to nearly every company, climate and sustainability are major themes, fintech remains a consistent focus area, and consumer and B2B software continue to represent the largest volume. The S25 batch demonstrates the maturity of YC's operations at scale: the organization has successfully distributed its mentorship, capital, and network across four cohorts per year while maintaining quality. The batch also reflects the global nature of contemporary startup funding: founders come from every continent, and YC actively supports international companies building for global markets. For investors, founders, and analysts interested in contemporary startup trends, founder diversity, geographic distribution of innovation, and AI adoption, S25 offers current and relevant reference material. The batch represents the ongoing, productive operation of YC as the world's premier startup accelerator.