Zip co-founder Rujul Zaparde on going from 0 to 1 with enterprise sales

How do OpenAI’s o1 and o3 models perform complex reasoning?

Jared predicts that in 2025, we’ll be able to have Zoom calls with AI

Astranis just successfully launched 4 high-orbit satellites aboard SpaceX's Falcon 9

YC Partner and Algolia co-founder Nicolas Dessaigne’s advice for founders starting out.

What David Lieb and his team built eventually became the foundation for Google Photos.

One Million Jobs 2.0

LLMs for Chip Design

Fintech 2.0

AI-Aided Engineering Tools

Stablecoins 2.0

Public Safety Technology

Government Software

The Winter 2025 application deadline is in less than a week! Apply at ycombinator.com/apply.

The "overnight success" of Kalshi

The best consumer companies incorporate both virality and network effect to grow organically.

Once you identify the problem and fix it, you can always launch again.

Y Combinator co-founder Jessica Livingston on the beginnings of YC.

New Defense Technology

Over-complicated pricing could kill a sales process.

We’re still in the early innings with AI.

Gmail creator Paul Buchheit on the very first version of Google’s “Did you mean?” feature

Sales pre-PMF should be done by the founders.

We’re running a new YC batch this fall!

Don’t try to time the market. Try to build an enduring business.

When you’re pre-product market fit, sales is a job for the founders.

The artistry is actually in that interface between the human and the technology itself.

Zero Interest Rate Policy: Handled incorrectly, too much money can be poison.

You should probably still learn how to code.

Better models, better startups.

It only really matters if you can find a handful of users that use your product habitually.

RFS: AI to build enterprise software

The internet weirdo to creator of new industries pipeline

Great founders actually build.

Probably not.

It's a competitive advantage to care about your customers.

Focusing on data quality over quantity, Metalware built a foundation model with less compute.

To be able to create something different, you have to be somewhat contrarian.

RFS: Dev tools inspired by existing internal tools

Find the one narrow thing that you can do well, and carve out something that's great.

Choose an area that you’re excited to learn about, because you have a lot of learning to do.

RFS: Machine learning to simulate the physical world

RFS: Better Enterprise glue

There’s a short list of things that actually matter when starting a company.

RFS: Climate Tech

San Francisco (and Silicon Valley) is for the builders.

RFS: Real-world crypto

Don’t forget the “viable” part.