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Y Combinator Blog

Pioneering startup funding, Y Combinator invests in numerous startups bi-annually, molding the future's tech landscape.

1.
Dalton Caldwell’s Move to Partner Emeritus
June 12, 2025  18:36:17

After 12+ years, 25 batches, and working with more than a thousand startups, Dalton Caldwell is transitioning to Partner Emeritus at YC.

Dalton joined YC in 2011 and has contributed in a number of roles over the years, most recently as a Managing Partner. During his time here, he worked

2.
Welcoming Jon Xu and Andrew Miklas as YC’s Newest General Partners
May 21, 2025  15:00:00
Over the last few batches, visiting partners Jon Xu and Andrew Miklas have become two of the most trusted voices in the YC community. They were both founders in YC’s Summer 2010 batch, and now, 15 years and two industry-shaping companies later, they’re back in a new role: General Partners at YC.
3.
Tyler Bosmeny built Clever into a $500M company–now he’s helping YC founders do the same as General Partner
April 1, 2025  16:00:00
We’re thrilled to welcome Tyler Bosmeny back to YC, this time as a General Partner.
4.
Michael Seibel's Legacy Continues at YC: Transition to Partner Emeritus
March 20, 2025  00:00:00

If you’ve been around YC, you know Michael Seibel has been a huge part of it for over a decade. He’s done it all - YC Founder (w07, w12), Group Partner, and Managing Director/CEO of the YC accelerator. Along the way, he’s helped

5.
East Coast College Tour 2025
March 13, 2025  21:26:20
YC is going on a college tour! We're visiting Harvard, Yale, MIT, Columbia, Cornell, and Cornell Tech. If you're a current student at any of those schools and interested in startups, we'd love to meet you.
6.
Summer Fellows Grants
February 17, 2025  16:58:00
This summer, YC will be giving grants to college students to work on their own technical projects. We’re calling these the Summer Fellows Grants. We hope this will encourage the smartest students to indulge their intellectual curiosity and work on hard technical things.
7.
Join us at AI Startup School — June 16-17
February 12, 2025  20:45:26
We're gathering 2,000 of the top CS undergrads, masters, and PhD candidates in AI to hear from speakers including Elon Musk, Satya Nadella, Sam Altman, Andrej Karpathy, Andrew Ng, and many more — the world’s top AI experts and founders who will teach you how to build the future.
8.
Announcing the YC Spring 2025 batch
January 20, 2025  17:01:38
Y Combinator is now running four batches per year: Winter, Spring, Summer, and Fall. We completed the first ever fall batch last year, F24, and are proud to announce the first ever spring batch. Applications are now open.
9.
YC Winter 2025 batch applications due by Tuesday, November 12, 2024
November 5, 2024  17:00:00
To better serve founders given the rapid rate of technological change, YC recently switched from two to four batches per year. The winter 2025 batch will run from January to March, and applications are due on November 12.
10.
Correcting the record for Continue and PearAI
October 4, 2024  02:49:44

YC is at our best when backing founders with an ethos of building for others, including strong open source developers like the founders of Continue and many others.

Earlier this week, a startup in the current batch, PearAI, was criticized online for an inappropriate approach to open source, particularly in

11.
Join us at Startup School Europe in London - November 23
October 3, 2024  18:30:00
Applications for Startup School Europe are now open!
12.
YC Fall 2024 batch applications due by 8/27
August 6, 2024  19:00:15
In response to overwhelming demand, we are running a YC batch this fall. Applications are now open.
13.
Join us at Startup School 2024 in San Francisco - July 27
July 8, 2024  16:00:00
Applications for Startup School 2024 are now open!
14.
Female Founders Conference applications are open now
June 18, 2024  15:59:00
We’re bringing the Female Founders Conference back in-person, and we’ll be hosting it on August 2 at our office in the Dogpatch in San Francisco.
15.
Dissecting the past to predict the future: Tracy Young on building TigerEye
June 12, 2024  18:00:00
In 2018, Tracy Young and her co-founders sold PlanGrid for $875 million. By 2021, she was ready to jump back in and do it all over again with a brand new startup. I chatted with Tracy about what drives her and some of what she's learned along the way.