Y Combinator

Paul Graham (@paulg) whether founders should move to Silicon Valley, and what it takes to build a startup hub anywhere else. Live from our YC | Stockholm event on April 29, 2026. 01:01 – Why the Big Center Matters 02:45 – The Power of Serendipitous Meetings 04:36 – Investors Move Faster in the Valley 06:03 – Respect Follows the Move 07:59 – The Dropbox Story 09:10 – Measuring Yourself Against Big Fish 12:21 – Silicon Valley's Pay-It-Forward Culture 15:36 – How to Help Stockholm Thrive 17:24 – YC as the Optimal Path 19:54 – Could Stockholm Become The Silicon Valley of Europe?

We've partnered with the state of Texas to launch efficiency.texas.gov, the nation’s first AI government concierge for laws, regulations, licenses, and permits. SAM AI lets citizens and businesses search across the Texas legal code, register and renew licenses, and fill out permits, all in one place. We are proud help Texas make its laws and permits accessible to all. gov.texas.gov/news/post/texa…

Back at it. At the mothership. Grateful to be amongst the world's best and brightest founders at YC. @garrytan as group partner. He was also Webflow's group partner when we both had less white hair. Can't wait to show ⬜⬜⬜⬜ to the world

We're announcing our $2.7m seed round from @bwcvc , @ycombinator, @tinyvc , and @venturetogether to build the autonomous tax firm 🌵 Walked around the nearest park to explain why companies like Hadrian, @openfx_ , @verticeHQ , @ButternutBox , @encord_team , @DuffelHQ , and @Immutable pick us over law firms & tax advisors for their Transfer Pricing. We're growing fast. Surpassed '25 ARR in Q1 alone so we're hiring across tax + product teams - if you're a transfer pricing nerd, please get in touch! Thanks to my amazing team, friends, investors, and angels for believing in us 🤙🏼

Yeesh.. is there no benchmark @poetiq_ai can't dominate?

From factory floor to installed on stand in less than 18 hours - not bad for SN1!

the 🐐@snowmaker

Tune in: youtu.be/ZVdgiuiOQ7E

Jeremy Allaire (@jerallaire) is the Chairman, CEO, and co-founder of @circle, the issuer of USDC — a stablecoin with nearly $80 billion in circulation and a core piece of the broader stablecoin market, which has grown from zero to more than $300 billion over the past decade. In this fireside, YC Visiting Partner @nemild sat down with Jeremy to talk about Circle's founding vision of building an internet protocol for dollars, the wave of institutional and regulatory adoption now reshaping the financial system, and why agentic economic activity, not just consumer payments, might represent the most transformative frontier for stablecoin builders in the years ahead. 00:00 - Why Stablecoins Matter 01:45 - Circle's Origin 07:10 - Top Use Cases for Builders Today 11:22 - Consumer vs. Business Adoption 13:20 - Banks & Institutions Enter the Space 17:54 - Global Regulation Landscape 22:40 - AI Agents & the Agentic Economy 26:15 - Missing Infrastructure for Builders 27:38 - Three Big Predictions for Stablecoins

Astraea brings drugs to market faster by fully automating clinical trial biometrics, turning raw study data into CDISC-compliant datasets, TFLs, and FDA-ready outputs in days. Congrats on the launch, @joshwqngsr and Sanmay! ycombinator.com/launches/QLz-a…

we built the first sane way to debug your agent locally. you can see your traces. codex/claude code can too. this lets them write evals and test your agents automatically. best part: it's completely free and open source. install with 1 line. (github below)

PerfectBit (@PerfectbitAI) creates high-quality training data that's correct by construction. They verify against physics simulators, scientific databases, formal proof systems. LLMs, robotics, AI for Science, and more. Congrats on the launch, @vaphab and @sjy82155065! ycombinator.com/launches/QMv-p…

@AseonLabs is honoured to be the first feature in the Ground Truth series from RideAI. A great new series focused on the infrastructure layer of autonomy, which happens to be exactly what we are working on. Big shout to @mikemallazzo for a quality interview. rideai.org/introducing-as…

Clara (@askclarahealth) is an AI-powered primary care doctor that reads your whole medical history, diagnoses, and treats - with licensed clinicians reviewing every decision. From the team that built Circle Medical to nearly 1 million visits/year. Congrats on the launch, @georgefavvas, Zeeshan, and Caitlin! ycombinator.com/launches/QMs-c…

.@TakeCareOS is an AI-first operating system for care agencies. It consolidates every function an agency runs on — rostering, shifts, CRM, care notes, messaging, invoicing, timesheets, and compliance — into one place, with AI agents that automate the admin work coordinators currently do by hand. Congrats on the launch, @ragavsachdeva! ycombinator.com/launches/QLS-t…

Tune in: youtu.be/RMmEB9ajmdo

We asked a dozen DevTool founders from companies like @RevenueCat, @greptile, @firecrawl, @infisical, @ollama, @resend, @mintlify, @UnslothAI, @porterdotrun, and @recallai, about the state of AI agents and the future of software engineering. In this episode of Founder FAQ, we covered everything from agents as customers and the end of coding, to advice for founders starting out and what they're most excited about going forward. Their answers might surprise you. 00:00 – Meet the Founders 03:00 – Building for Agents First 04:22 – Biggest Early Mistakes 07:15 – Do Founders Still Write Code? 09:22 – Most Unexpected AI Discoveries 12:09 – What's Underrated Right Now 14:38 – Predictions & What's Next

Manicule (@manicule) owns docs and developer content for @Greptile, @Skyvern, @Supermemory, and others. Half the cost of a DevRel, twice as fast, written for agents. Comment 'AUDIT' for a free audit of your docs. Congrats on the launch, @NamanBansal0611 and @shreyansj! ycombinator.com/launches/QKr-m…

Your product video on your landing is being ignored. And it took you hours to make it. Hours of scripting. Recording. Re-editing because the UI changed. All so visitors could bounce in 8 seconds and skip the part they were interested about. So we shipped something better. The new AI inside Karumi (YC F25) turns your product video into a conversation. → Learns your product → Demos it live, the way your visitors want to see it Okay, but, do I need to update it? No! The agent picks up on product changes and self-improves from every interaction. No re-recordings. No outdated videos. And if you don't like something, just tell it what to change in natural language. Too good to be true? We are opening limited spots to try our autopilot mode. DM to check it out!

We raised $6M to bring the future of filmmaking into your hands. Today, the premiere of our first Flick Residency Film Series is now live. 14 filmmakers. 13 films. All made on Flick. Founded by filmmaker @ZoeyZ1004 and Instagram Stories founding engineer @RuiCromwell . Backed by @trueventures , @GVteam , @ycombinator (@garrytan , @golda ), @lightspeedvp, @pioneer_fund, Formosa Capital, @OliveTreeCap , and N1.

Auxos (@UseAuxos) lets marketing, product, and research teams simulate every decision at scale before it reaches a real customer. Test hypotheses on messaging, ads, pricing, and brand positioning in minutes. Congrats on the launch, @TheAshtonDaniel, @kerry_lu_, and @jwoobers! ycombinator.com/launches/QM1-a…