Finding signal on Twitter is more difficult than it used to be. We curate the best tweets on topics like AI, startups, and product development every weekday so you can focus on what matters.

founder, techno-optimist, college dropout, partner at @ycombinator.
Most robot startups, even well funded ones, are still doing R&D. Ultra's shipping. Their robots are out there in the field doing necessary...
Cisco is going through one of the most remarkable AI transformations, and not many know about it. Two years ago, Cisco quietly started a ne...
When I was building YC's conversational AI, I benchmarked every LLM and inference cloud I could get my hands on. In my head-to-head benchma...
When I met @gpusteve and @gpuemi 18 months ago, they were undergrads at UChicago who weren't planning to start a company. Today they're ann...
If you don't have a frontier AI agent that lives in your slack and responds like a coworker, you should get one, it's incredibly useful. Op...
YC built software that all our founders have used to send SAFEs for the last few years. Today, we're opening it up to everyone and giving it...
Take a minute to watch this video; it's a cool one. This is not some AI generated video; this is the actual robot the Grip founders built, s...
The size of YC's codebase, over the last 14 years.
📝 Dipole Labs: AI-controlled optical circuit switching for AI clusters Today @dipole_labs is launching out of stealth. They build high-sp...
This is driven by a real technical breakthrough in how agents can browse the web. https://twitter.com/gregpr07/status/2085763062771150888
Have you noticed that Claude Code has a Ballmer Peak?
Starcloud was founded on January 1st. On January 2nd, they booked a SpaceX launch, not knowing what they'd put on the rocket. Still can't...
The photos you see of Startup School are mostly the big talks. But we got feedback last year that people wanted more small-group interactio...
Doing a little Claude Coding while watching @bcherny at Startup School. It's such a treat to get meet the creator of a product you use ever...
I'm building a web app that integrates with a number of dev tools via APIs, and the experience of working with dev tools companies in the Cl...
Claude was RL'd on coding sessions with humans. But the more I use Claude Code, the more I realize I'm being RL'd on Claude Code - learning...
Improving a product with a chat interface is so much easier than a website. With a website, you're stuck watching screen recordings and gue...
A funny thing is that LLMs are not particularly good building agentic systems. For the moment, you need human expertise to do it well.
When you get your army of AI agents working right, you really do feel like Mickey in the Sorcerer's Apprentice.
A common problem we hear from founders trying to "talk to their users" is that their users don't respond. Well, they're more likely to resp...