How Long Is the Y Combinator Program?

The Y Combinator program is a three-month batch. Each batch (Winter, Spring, Summer, Fall) runs for roughly 12 weeks, from kickoff through Demo Day. During this time, founders are expected to be fully committed: building product, talking to users, and participating in batch activities. The program is often in person in San Francisco, though format can vary; check current details on ycombinator.com.

For how batches work and how to choose one, see YC batches explained and when to apply and choosing a batch.

Typical batch activities include weekly partner meetings (office hours with YC partners), batch events (talks, dinners, and group sessions), and Demo Day at the end, where founders pitch to investors. The intensity is high; YC expects founders to focus on growth and product. You receive the investment at or before the start of the batch, so you can use the capital during the program to hire, market, or scale.

For a deeper look at what happens during the batch, read what happens during a Y Combinator batch.

YC expects full-time commitment from founders during the batch. If the program is in person, you typically need to be in the Bay Area for the duration. Plan for three months of focused work: the program is designed to compress a lot of learning and progress into a short window. If you cannot commit fully, consider applying for a batch when you can.

The Y Combinator program is three months long, with weekly partner meetings, batch events, and Demo Day. Founders should plan for full-time commitment and, when in person, being in the Bay Area. For batch structure and application timing, see YC batches explained and when to apply.