YC Visiting Partner, former CEO/Cofounder of Convex (acq by $TTAN), vertical AI, services, & industrials investor. Friend of the physical world. Dad.

Joined February 2026
6 Photos and videos
The best vertical AI founders aren't building wedges...
Nothing more energizing than a week of meeting with @ycombinator companies! Congrats to @garrytan and the whole team for another fantastic cohort - and to the founders taking big swings. YC is often a few months ahead of the market - trends I noticed from the batch 👇 1. "Real economy" AI is here. Manufacturing, supply chain, logistics, etc. We have agents that can reliably operate across platforms, plug into legacy equipment, and scrape data from systems of record. Businesses that haven't bought new software in decades are now customers of AI. 2. The broker and the agency are becoming software. Founders are taking businesses that have always run on human middlemen and rebuilding them as agent-run platforms. This both unlocks labor budgets allows you to own transactions and get outcome data that can be further used to improve the product / build a network. 3. Vertical AI is (often) routing around incumbents, not integrating with them. For many founders, the new playbook is to skip the official API entirely (computer-use, front-end reverse-engineering) so legacy software can't shut you off. Fragmented industries with no dominant platform are suddenly wide open. 4. Founders are going upmarket early, not eventually. ACVs for the first few customers are going up. Founders are starting on enterprise logos from day one and treating SMB as validation they've already outgrown. This might mean 1-2 $100k ACV customers in the first 6 months versus a long tail of $10 - $20k logos. 5. Everyone is moving to the US - fast. A striking number of teams are international and already have real traction in their home markets, but are relocating to the US within weeks (visas in progress) post-YC to chase the bigger market. Yes, there will be outliers who build massive cos locally - but SF is the center of gravity. 6. Self-improving products are here. Teams are spinning up companies operated by agent "org charts" - who can not only run the product but proactively and autonomously make it better over time. Customers can prompt their own workflows...or the product will start to do this intelligently over time (on a per-product basis).
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Charlie Warren retweeted
Welp, they went ahead and did the damn thing. Yesterday @AbridgeHQ skipped a few iterative steps and jumped straight to the end state, announcing an "AI-native clinician intelligence platform" that connects care delivery, payment and evidence-based treatment, with a strategic check from @EliLillyandCo to underline the point.
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A founder asked me how to build an AI-services business without it turning into a consultancy. My answer: the whole game is in how you charge.
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Jun 10
.@farzatv built Clicky eight weeks ago to help him learn DaVinci Resolve. Since then, people have used Clicky for everything from learning Blender to watching anime. Here's how he describes how the tool works:
Watch me control my computer with just my voice. This is the future of operating systems. No hands. GPT-Realtime 2.0 is very, very underrated. Demo:
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the @noxmetals office looks like the midwestern basements of my childhood. bullish.
in need of a larger office
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Drag and chat
drag your files in and start chatting available now
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I spent an entire office hour brainstorming ways to make a startup’s product more appealing to agents. This was a first as an office hour topic but it feels like a conversation we’ll be having more and more. The industry they sell to is massive but slow growing. Meanwhile every player is launching agents. They can painstakingly sell deal after deal after deal to each player over years… or build a product that’s immediately the consensus pick for all their agents. The latter path seems obviously better in 2026.
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A huge DAU spike after launch is awesome. Celebrate it. But don’t confuse it for traction. The number I care about is how many people came back the next day. Repeat usage is what matters. It’s much harder to fake.
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There's a startup in the current YC batch that built an MRI machine in 101 days.
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Drafted, led by Nicholas Donahue, secures $16M to revolutionize home design with AI. Backed by investors like Y Combinator and Pinterest cofounder Ben Silbermann, Drafted aims to simplify custom home creation. bit.ly/49YMyGq
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TIL pre AI SaaS in the physical world can still command a premium multiple
Engineering software maker Autodesk has agreed to buy MaintainX, a firm focused on maintenance tools bloomberg.com/news/articles/…
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Founders must stop trying to building 2010-era businesses with 2026-era technology. Don't try to rebuild Foursquare or Yelp. Don't try to recreate Basecamp by 37 Signals with $10/mo SaaS pricing. Don't underprice! If it works it's worth a lot more. Don't be tempted to become "Tech enabled PE" with revenue tricks. The rules of tech changed with AI. Play the new game.
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Charlie Warren retweeted
The biggest hack I’ve seen for founders to close deals faster: just show up. Get on a plane, fly to their office, meet in person, bond with the whole team. Instantly replaces weeks of zoom calls.
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Charlie Warren retweeted
I understand why we don’t want people to come to the US to be criminals, mooch on welfare, open learing centers and otherwise undermine the country. But I don’t understand why we make it harder for motivated, ambitious, hardworking people to come to the land of opportunity.
An alien who is in the U.S. temporarily and wants a Green Card must return to their home country to apply. This policy allows our immigration system to function as the law intended instead of incentivizing loopholes. The era of abusing our nation’s immigration system is over.
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I am building a team. If you're really really really good at building stuff, design, filmmaking, writing, pushing the models to their limits, or just making people care about a product at mass, certainly reach out. Let's collab make stuff. Details: docs.google.com/document/d/1…
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Founders overestimate how hard it is to become a top 100 expert on most subjects. For most things you need to solve, there’s usually a very clear path: just go do the work, obsessively, and become friends with everyone else doing it.
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A mic drop moment @ycombinator tonight @sama just offered $2M in OpenAI tokens to EVERY YC startup in the current batch in exchange for equity Just like Yuri Milner offering to invest in every startup back when Sam was a YC partner I can't wait to see what's unlocked when you let the most driven, creative and formidable founders tokenmaxx
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5 things @farzatv does differently > never checks email (his agent does it) > takes analog notes at the gym, turns them into apps > uses screenshots and songs as inspiration > built a personal wikipedia of his own life > never scrolls X, uses @grok instead
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