Y Combinator

Of the 144 startups featured in YC’s first Spring 2025 batch, 67 of them, or 46%, were AI agent companies.

Rowghani joins a flurry of senior partners at established firms who have left to raise seed funds.

The accelerator is the most active investor in companies using LLMs for multi-step tasks that require reasoning.

PitchBook data shows that startups with active founder-CEOs create value faster than companies led by experienced professional managers.

Investment at the earliest stages in generative AI is slowing as investors begin to rethink their strategy, PitchBook data shows.

More than 60% of this year’s Y Combinator cohort companies are building tools around AI and machine learning.

Y Combinator made its name by backing companies such as Airbnb and Reddit early on, and it has ridden that wave to become the accelerator of choice for founders.

Y Combinator’s annual demo day will take place online and the City of Austin has canceled South by Southwest, as concerns over the spread of coronavirus upend two of Silicon Valley’s marquee events.

Y Combinator is in the process of raising up to $1 billion for its newest VC fund. The massive vehicle represents YC’s expanded investment thesis.

We highlight some of the notable companies and founders to graduate from the Y Combinator accelerator, including Airbnb, Instacart and Dropbox.

Although accelerators can be a hot topic these days, with question as to how much value they really provide, there are a handful of programs that seem to consistently pump out quality companies. One is Y Combinator, and we’ve ranked its top co-investors since 2010.

With so many accelerators to choose from nowadays, it can be hard to narrow down the field of where to apply. We’ve attempted to help by breaking down which VC firms invest in the most popular accelerators.