Y Combinator on YouTube 

Y Combinator is a United States startup accelerator that runs a three-month programme four times a year—winter, spring, summer, and fall—and states a blunt goal: help a company take off. On ycombinator.com the house explains that some teams arrive before they have really started, others after a year of building, and that the job is to leave them in dramatically better shape three months later. Public alumni colour the firm chooses to print includes OpenAI’s Sam in the inaugural S05 batch and later YC Research work, Stripe’s Collison brothers in W07 and S09, Coinbase in S12, DoorDash in S13, Scale AI in S16, and Dropbox in S07. Those stories are Y Combinator’s own heritage tiles. They are not a forecast that the next batch will look the same, and they are not an invitation to impersonate a partner in a direct message. The programme overview on the official site is the source of record for what happens during a batch and what founders receive. Social channels are not an application shortcut and not a backdoor into a batch. Applications belong on ycombinator.com through whatever flow the firm currently publishes. Official X is ycombinator. Official YouTube is c/ycombinator. Those two official socials are the usable URLs in the pack. They carry talks, batch colour, and founder interviews. They are not a fundraising desk, not a demo-day ticket window that asks for a wire, and not a place to share OTP, bank details, or unreleased product secrets. Anyone selling a “YC intro” for a fee is not Y Combinator. None of this is investment advice or a solicitation to invest. Follow official YC pages for the four-batch-a-year accelerator, then verify every programme detail on ycombinator.com. Y Combinator’s public alumni tiles also mention Scale AI’s batch pivot and Dropbox’s later listing colour. Heritage is not a template. Current batch mechanics, funding amounts, and legal terms live on ycombinator.com and change. Four seasons a year means the calendar is public; it does not mean a late tweet is an application. Demo-day videos on YouTube are teaching films and history, not live order books. Partners will not ask for a wire to “secure your interview.” Keep prototype source code, customer lists, and banking passwords off X. Apply where the site says to apply, then verify every deadline there.