I build & help others build cool stuff.

San Francisco, CA
Joined October 2007
Dia is fine.
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Some very important office equipment.
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Now we know which cofounder is the better photographer @j_araujoneill
Milestone: We finally have an office. Already in love with it. We are going to host the most cracked hackers here.
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Hell yeah
A24 will release a ‘V/H/S’ movie based in the SCP Foundation universe in theaters next year. The film will follow anthology stories of “recovered field documentation” or video evidence gathered & archived by the organization.
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just found out all my cool kid eng friends are building their own cloud laptop project
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Our infrastructure goal is science per GPU-hour. On our workloads, we achieved: 4.1× training throughput vs. our Megatron baseline 2.5× faster decoding 95%+ cluster utilization We’ve been fortunate to build alongside the strong open-source community, and we contribute back improvements back to Megatron-LM, SGLang and Miles. Read more about our infrastructure here. periodic.com/news/ai-infrast…
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I change my stance. Real AGI not just writing the Winds of Winter, they also kills the NDA. AI should be the Bocchicchio Clan of our time.
The collective time wasted negotiating NDAs is a tragedy for humanity
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Lei Du retweeted
The collective time wasted negotiating NDAs is a tragedy for humanity
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the best launch video this year.
I co-founded Opendoor ($10B+ rev). Today, I’m launching Summation. We raised $35M from Benchmark & Kleiner Perkins to build an AI analyst you can trust. Here’s where Claude and ChatGPT fall short: 🧵
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Solving 3D Navier–Stokes is cool, but I won’t believe AGI is here until a frontier lab finishes The Winds of Winter for me.
We’re sharing a solution to the Navier-Stokes Millennium Prize Problem, one of the deepest problems at the frontier of mathematics. The proof was produced by a group of agents, using an OpenAI next-generation model significantly more capable than GPT-6 Astra. The problem concerns whether the description of smooth three-dimensional fluid motion modeled by the Navier-Stokes equations can break down. It has remained unresolved for roughly 90 years.
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and Bio Booster Armor Guyver
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Which is harder to find right now in sfba? 1. 5k sqft office space you don't hate 2. 2b2b apartment that's not designed for roommates 3. 2MW colo DC with liquid cooling
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Looking forward to see the Ryo unchained from corp limits 😉
i left Cursor. after 10 years inside the tech bubble in San Francisco, Cursor felt like the sharpest version of that world – fast, intense, ambitious, full of people trying to pull the future closer. i’m leaving with gratitude, but also with the feeling that i need a different rhythm. slower time. different weather. more culture, aliveness, and humans in the everyday. Asia feels like the right place to begin again. to stay grounded, experience life more fully, and build freely. i’ll share what i find along the way!
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Lei Du retweeted
We are starting Intent Lab, building an autonomous team we call "fleet" that turns intent into production software. Today we are sharing some early results: the fastest GLM5.2 inference engine, one shot database creation, and a fully verified agent filesystem. intentlab.ai/blog/turn-your-…
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Lei Du retweeted
The founder in their 40s with taste and discernment is the new gentleman unicorn founder Because there can be 100x to 1000x of them working at their beck and call via agents and software factories all the time
The age of the 40-year-old founder is back. Bryant Chou spent 12 years as CTO of Webflow, which now powers something like 1.5% of the entire internet. He's back in the current YC batch with Ploy, an AI marketing platform, and he describes himself as "a bit of a boomer, double the age of the YC founders." But over 13% of his batch is already using his product, within months of launch. There is a side of the argument which destroyed one of the main edges young founders have, which was being faster and cheaper at building.... speed is everyones game. If what's left is knowing what to build this is more likely to come from spending 15 years watching an industry up close, collecting the thousand small frustrations that tell you where the real problem is. Bryant can build an anti-slop website tool because he spent over a decade learning exactly why websites are slop. So I'm updating. I don't think it's young vs. old. I think AI rewards whoever has the most domain knowledge to point it at, and only sometimes is this younger founders who are thinking outside of the box...
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As engineering, product, design, DS, etc. melt into a new kind of role, I was reflecting on what roles might look like in the future. For example, when I look at the Claude Code team I see what I think is five archetypes: 1. Prototyper: comes up with brand new ideas; churns out many ideas, most of which don't ship 2. Builder: quickly turns a prototype/idea into production-grade product/infra 3. Sweeper: cleans up the UI, simplifies the code and system, unships, optimizes performance 4. Grower: takes a product that has been built and iterates on it to improve Product-Market Fit 5. Maintainer: owns a mature system to make it secure, reliable, fast, and efficient as it scales Many people span across 2 roles, and sometimes 3 roles. I also notice that these roles are not really tied to job function -- eg. across Anthropic, some designers match category 1, some 2, some 3; same for engineers, PM, DS. A healthy team needs a mix of these, depending on the product: - A product that is new and pre-PMF needs people that are strong at 1+2+3 - A product that is growing and has found PMF needs 2+3+4 and some 5 - A product that has strong PMF needs 3+4+5 and some 2 Maybe product roles of the future will look more like this, and less like the domain-specific roles of today?
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Introducing Dawn 🌅 @varadh, @trq212 and I have been talking to a lot of ex-founders lately. There’s a community for every stage of starting a company. There isn’t one for what comes after. So, we decided to start one. Dawn Vol I is a small dinner. May 19th in SF. Off the record. Ex-founders only. Register at meetatdawn dot com
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Everyone’s building all these insane things with GPT-5.5, but I’m just out here trying to impress my wife with an app that teaches my toddler how to read a clock. One-shot by GPT-5.5 in < 30 seconds (obviously)
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