Y Combinator

If you read articles about companies like OpenAI and Anthropic training foundation models, it would be natural to assume that if you don’t have a billion dollars or the resources of a large company, you can’t train your own foundational models. But the opposite is true. In this episode of the Lightcone Podcast, we discuss the strategies to build a foundational model from scratch in less than 3 months with examples of YC companies doing just that. We also get an exclusive look at Open AI's Sora!

One trait that many great founders share is conviction. In this episode of Dalton & Michael, we’ll talk about finding confidence in what you're building, the dangers of inaccurate assumptions, and a question founders need to ask themselves before they start trying to sell to anyone else. Apply to Y Combinator: https://yc.link/DandM-apply Work at a Startup: https://yc.link/DandM-jobs

In this episode of the Lightcone Podcast, YC Group Partners chart the evolution of San Francisco as the center of the startup world and how AI has brought everyone back to the city. They also talk about why YC chose to open our new HQ in the Dogpatch neighborhood of San Francisco and share their advice for new founders moving to the city for the first time.

Startups need to innovate to succeed. But not all innovation is made equal and reinventing some common best practices could actually hinder your company. In this episode, Dalton Caldwell and Michael Seibel discuss the common innovation pitfalls founders should avoid so they can better focus on their product and their customers. Apply to Y Combinator: https://yc.link/DandM-apply Work at a Startup: https://yc.link/DandM-jobs

In this episode of the Lightcone Podcast, YC Group Partners discuss the launch of the Apple Vision Pro and the potential of this new platform for new startups. This is a deep dive into the technical innovations Apple has made for this product, how this compares to the launch of the iPhone, and advice for founders interested in building in this space.

Within the world of startups, you'll find lots of discourse online about the experiences of founders bootstrapping their startups versus the founders who have raised venture capital to fund their companies. Is one better than the other? Truth is, it may not be so black and white. Dalton Caldwell and Michael Seibel discuss the virtues and struggles of both paths. Apply to Y Combinator: https://yc.link/DandM-apply Work at a Startup: https://yc.link/DandM-jobs

In the first episode of the Lightcone Podcast, YC Group Partners dig into everything they have learned working with the top founders building AI startups today. They share the ideas that are working particularly well, mistakes to avoid, and take a look at the competitive landscape among the current AI giants.

Based on the thousands of companies YC has funded over the years, the biggest common element between all successful startups is having technical talent on the founding team. But what do you do if you don't know how to code? You may think you can get by using no-code tools, part-time consultants, or dev shops to bring your startup idea to life. But that thinking is wrong. In this episode of Dalton & Michael, we’ll discuss exactly why that is and why recruiting a technical co-founder is the single biggest way to create value as someone trying to start the next big thing. Apply to Y Combinator: https://yc.link/DandM-apply Work at a Startup: https://yc.link/DandM-jobs

In this episode of Startup School, YC Group Partner Tom Blomfield discusses one of the most important elements of running any startup: metrics! Tom shares what key metrics to track and how to use them to make the best decisions for your company. Apply to Y Combinator: https://yc.link/SUS-apply Work at a startup: https://yc.link/SUS-jobs

Social media often promotes a doom and gloom outlook about our future society. But is that worldview accurate? In this episode, Dalton Caldwell and Michael Seibel discuss the best ways for founders and aspiring founders to think about weighing optimism and pessimism in their day to day lives. Apply to Y Combinator: https://yc.link/DandM-apply Work at a Startup: https://yc.link/DandM-jobs

Casetext started out in 2013 as a crowdsourced law library — a sort of “Wikipedia meets Reddit” for the law. Ten years later, Casetext is one of the biggest wins to date in AI, capable of turning weeks of arduous legal work into hours or minutes. Just months ago it was acquired for $650 million dollars. What happened between those two points? For this episode of Main Function, YC President Garry Tan sits down with Casetext co-founder Jake Heller to learn the real story of their 10-year “overnight” success: the 3 a.m. origin story, how the company evolved as fast as tech would allow, and the “magic demo” that helped turn Casetext into a rocket ship. Apply to Y Combinator: https://yc.link/MainFunction-apply Work at a Startup: https://yc.link/MainFunction-jobs

The stories are true: technical founders (and early technical employees!) often end up with the short end of the stick when starting a company. In this episode of Dalton & Michael, we’ll discuss the questions and best practices that an aspiring technical founder should think about — whom to start a company with, and how to think about things like equity split and division of responsibilities. Know what you are worth and act accordingly! Apply to Y Combinator: https://yc.link/DandM-apply Work at a Startup: https://yc.link/DandM-jobs

If you’re an employee of a late stage company right now, how would you know when it’s time to move on vs. time to double down? The fact is there isn't an easy answer — it can really vary from person to person and situation to situation. In this video, YC Group Partners, Michael Seibel and Dalton Caldwell share some suggestions on what sort of things an employee of a late stage startup should be looking for — the good signs and the bad — to best make this decision. Apply to Y Combinator: https://yc.link/DandM-apply Work at a Startup: https://yc.link/DandM-jobs

There's only so many hours in a day and running a startup will require most of them. So how do you use that time wisely and be more productive? In this episode of Office Hours, the Group Partners at Y Combinator share their favorite strategies to be more effective and reduce distractions at work. They'll discuss the benefits of maker/manager schedules in addition to the fake work and productivity fads that can do more harm than good. If you're going to build a big business, you'll learn it requires working smarter AND harder to win. Apply to Y Combinator: https://yc.link/OfficeHours-apply Work at a startup: https://yc.link/OfficeHours-jobs

In our new documentary series Backstory, we’re profiling the extraordinary Group Partners at the heart of YC. We’re kicking it off with Surbhi Sarna, YC’s first healthcare and biotech-focused Group Partner. In 2018 Surbhi Sarna sold her company nVision for $275 million to one of the world’s leading healthcare companies. But to understand how Surbhi got where she is today, you have to go back to her sophomore year in high school, when a cancer scare upended her life and set her on an entirely new path. In this episode Surbhi opens up about her health scare, how it impacted her life going forward and how she was able to ignore the people who doubted her along the way. If you've ever felt undervalued or underappreciated, Surbhi's story will provide you with insights and advice on how to overcome those hurdles on your journey to starting a company. Apply to Y Combinator: https://yc.link/Backstory-apply Work at a Startup: https://yc.link/Backstory-jobs

For this latest episode of Office Hours, the Group Partners are sharing stories from their worst investor meetings. We’ll outline some of the weird plays we’ve seen investors try to pull — but we’ll also confess times that we, as founders, bungled meetings we could’ve nailed. We’ll discuss what differentiates a truly great investor, and shed a bit of light on something we rarely talk about publicly: the YC Investor Database. Apply to Y Combinator: https://yc.link/OfficeHours-apply Work at a startup: https://yc.link/OfficeHours-jobs

Should you and your startup live in San Francisco? Y Combinator Partners, Michael Seibel and Dalton Caldwell, debate their different opinions on whether startups are more likely to succeed in the Golden City or elsewhere. Where do they find common ground? Watch to find out. Apply to Y Combinator: https://yc.link/DandM-apply Work at a Startup: https://yc.link/DandM-jobs

You might think that pivoting is something done only by the startups that don’t make it. In reality, a huge number of the best startups pivoted. In this first episode of our new series, Office Hours, Y Combinator Group Partners share their favorite stories of entrepreneurs who pivoted and went on to build game-changing companies. The group of startup experts also share their own pivot stories and help answer the questions: How do you know if it’s time for your startup to pivot—and how will you know if that next idea is the one? Apply to Y Combinator: https://yc.link/OfficeHours-apply Work at a startup: https://yc.link/OfficeHours-jobs

How will the rise of AI impact startups and entrepreneurs? Join Michael Seibel and Dalton Caldwell for a discussion on the opportunities and challenges AI brings for founders. Apply to Y Combinator: https://yc.link/DandM-apply Work at a Startup: https://yc.link/DandM-jobs

When it comes to building a startup you’re never doing it entirely from scratch. Inspiration and ideas can come from a variety of places, including other successful startups. But there’s a thin line between borrowing smart ideas and copying them blindly - otherwise known as Cargo Culting. In this episode Dalton and Michael break down the problem with Cargo Culting and offer advice on the right way to draw inspiration from other successful companies. Apply to Y Combinator: https://yc.link/DandM-apply Work at a Startup: https://yc.link/DandM-jobs