Slideshow of founders and startups at Y Combinator.

Y Combinator created a new model for funding early stage startups.

Twice a year we invest a small amount of money ($150k) in a large number of startups.

The startups move to Silicon Valley for 3 months, during which we work intensively with them to get the company into the best possible shape and refine their pitch to investors. Each cycle culminates in Demo Day, when the startups present their companies to a carefully selected, invite-only audience.

But YC doesn't end on Demo Day. We and the YC alumni network continue to help founders for the life of their company, and beyond.

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Since 2005, we've funded over 2,000 startups.

Y Combinator is a community of over 4,000 founders.

Our companies have a combined valuation of over $100B.

See all companies Top 100 companies Work at a YC company

Female Founders Stories, a collection of interviews with some of Y Combinator’s female alumni

Read about Tracy Young, Founder of PlanGrid (YC W12) on Female Founder Stories

Also visit Elpha, a site for women in tech

Marc Andreessen

"Y Combinator is the best program for creating top-end entrepreneurs that has ever existed."

Marc Andreessen, General Partner, Andreessen Horowitz
Patrick Collison

"I doubt that Stripe would have worked without YC. It's that simple. Acquiring early customers, figuring out who to hire, closing deals with banks, raising money -- YC's partners were closely involved and crucially helpful."

Patrick Collison, Founder, Stripe (YC S09)
Julia Hartz

"I've been fortunate to engage with the YC community at past events over the last few years, and always walk away impressed with the passion and caliber of talent that YC brings together."

Julia Hartz, Co-Founder & CEO, Eventbrite

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