Y Combinator created a new model for funding early stage startups. Four times a year we invest in a large number of startups.

Y Combinator, LLC (YC) is an American technology startup accelerator and venture capital firm launched in March 2005 [1] which has been used to launch more than 5,000 companies. [2]

Y Combinator is well-known for producing companies like Airbnb, Stripe, Coinbase and more. But what's the real story behind the success of YC and the companies they fund? This is everything you...

Learn how to start a company, with help from the world's top startup accelerator - Y Combinator. Startup School is a free online course on how to start a startup. Get advice based on 15 years of YC's …

Y Combinator is the leading startup accelerator for entrepreneurs. Since 2005, YC has invested in over 5,400 companies, including Airbnb, Dropbox, Stripe, Reddit, Instacart, DoorDash, and...

Jan 31, 2026 · Y Combinator is a startup accelerator that provides early-stage companies with seed funding, mentorship, and access to an unparalleled network of founders, investors, and industry …

Apr 28, 2026 · Every few months, Y Combinator publishes a list of ideas it wants to fund. Most founders skim it. The smart ones treat it as a roadmap. The Summer 2026 edition is different from previous …