Company ProfileY Combinator is a renowned startup accelerator based in Silicon Valley, providing seed funding, mentorship, and resources to early-stage startups. Founded in 2005, it has launched over 5,000 companies, including Airbnb, Dropbox, and Stripe. YC offers a three-month program culminating in a Demo Day, connecting startups with a vast network of investors and partners. The next application deadline is May 13, 2025, for the Summer 2025 batch.