The outages this week in San Francisco are exactly why we have to break up the utility monopolies. Introduce competition. Lower the cost. Up the service.

Andrej Karpathy literally shows how to build apps by prompting in 30 mins https://t.co/rkJOOraznO

I'm incredibly proud that Flock Safety played a key role in working with first responders to find the suspect in the Brown and MIT murders. America cannot tolerate tragedies like what we saw at Brown and MIT this past week. The single best way to curb crime is to make sure

We added $7 million in additional ARR in the last 24 hours. That’s more than our total combined ARR in 2023 and 2024. Huge credit to our customers for their trust, and to the @WeAreLegora team for executing with focus, passion and urgency. On to 2026!

Dec 10: Cambridge, MA cancels Flock contract. Dec 18: Flock finds the killer of an MIT professor.

This is your sign to log off and touch grass

We should be making it much, much easier to build data centers in the US (and the energy infrastructure needed to power them). There’s no moratorium in China on building infrastructure:

How far can vibe coding actually go? Introducing App-Bench by @AfterQuery, a benchmark for end-to-end web app development. We tested 6 production web apps on 10 coding agents from @OpenAI, @GoogleDeepMind, @AnthropicAI, @cursor_ai, @orchidsapp, @v0, @boltdotnew, @Replit, and

To Connie Chan, Chyanne Chen, Jackie Fielder & Shamann Walton: by voting against Family Zoning, you opposed a policy that will shape San Francisco’s livability, affordability, and diversity for decades, harming the very people you claim to fight for. Voters will never forget.

These are pretty extraordinary numbers.

I finally sat down and wrote the “introduction post” Substack recommends. From childhood to OSU, to Square, Facebook, and YC—what poured out were unexpected personal reasons I’ve spent my entire life obsessed with storytelling, and why The Angle is where that obsession becomes

I have a bunch of angels in my cap table, and without fail, the best are @YCombinator alums. It is, of course, partly cause they are or were all founders, but there is also a gap between the angel founders from YC and not. I was trying to figure out why, and I think I know. It's

Well this took off. We are trending, fam. If you think @JackieFielder_ should not be allowed to create purgatory for research labs in the Mission just because she hates hypothetical delivery drones, you can find and email your supervisor here: https://t.co/4PNnM2kalH

JAS 39 Gripens flew in a Christmas-tree formation over northern Sweden yesterday. 📹: u/yeeyaho

I'm so excited to be joining @WeAreLegora! Legora is building the OS for lawyers. I’ll be the first forward deployed engineer, based in NYC. I was impressed by them since we first met, but being here, it truly feels like a place where great things will happen.

I switched to Mercury a year ago and absolutely love it. Congrats @immad

Meesho goes public today, becoming YC's second company to list in India. From S16 to IPO, they've built India's largest e-commerce platform—empowering millions of small merchants to grow their businesses. Congrats to @viditaatrey and @barnwalSanjeev on a decade of relentless

.@Veriff is the identity layer for the internet: matching people to government-issued IDs with a selfie so companies can verify users instantly and stop fraud at global scale. What began in Estonia has grown into one of the world’s leading identity verification systems,

China’s autonomous tractor goes viral! 🚜 China’s aging rural population and labor shortages are forcing a rethink in agriculture, and the answer may already be working the fields. The Honghu T70, a fully electric, autonomous tractor developed in China, is not a prototype.

The metro in Kyiv tonight 💔 Due to the massive shelling of all cities in Ukraine, many residents of the capital chose the metro as a shelter on the night of December 6. russia used ballistic missiles, aeroballistic missiles, cruise missiles, and drones in an attempt to hit

The default voice at Vapi is its co-founder and CEO @jordan_dearsley. I know because I’ve watched dozens of YC demo videos for voice AI products… and they all speak with Jordan’s voice.