Y Combinator

A startup accelerator and venture capital firm that provides seed funding, mentorship, and a network to early-stage companies.

Incubator Active San Francisco, United States Est. 2005

Last updated 2026-07-20

Portfolio

in our dataset

Rounds participated

Rounds led

Rounds' value

$23.5M

total disclosed, rounds participated

Stages

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About

Y Combinator (YC) is an American technology startup accelerator and venture capital firm founded in March 2005. It invests in startups and offers an intensive three-month program that includes weekly group office hours, one-on-one mentorship, access to a large alumni network, and guidance on product-market fit, business models, and fundraising. The program culminates in "Demo Day," where startups present to potential investors. YC has funded over 5,000 companies, including well-known names like Airbnb, Stripe, Dropbox, DoorDash, and Coinbase.