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Garry Tan
@garrytan
President & CEO @ycombinator —Founder @garryslist—Creator of GStack & GBrain—designer/engineer who helps founders—SF Dem accelerating the boom loop
5.9K Following    1M Followers
A company is a planned social order, but one built under pressure from customers, markets, hiring, cash, time, and technical constraint. This social order is maintained via a founder, the institutional idea, and the managers that uphold the order. The founder must generate belief, but ego turns belief into blindness. The institution protects its self-conception as functional. But believing you are functional can make you not function. See: San Francisco during COVID. The manager protects his self-conception as competent. But believing you are competent can make you incompetent. The founder protects his self-conception as visionary. But believing you are visionary can make you precisely not that. Embedded in each is the seed of its own undoing, of its own un-seeing. The war of every founder, institution, and manager is to manage exactly this. To have vision, uphold function, be competent, in the face of real counterforces generated internally by the very operation of what you are trying to do.
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Manhattan Institute is the truth
Seasoned founders in the age of intelligence are aging like fine wine
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Teams don’t cohere by magic. Someone has to love the people and the outcome enough to metabolize conflict without abandoning either. The war against organizational entropy is actually just about encouraging healing and assuming good intent.
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Socialists want state controlled bread lines You know what creates abundance? Great functioning markets.
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
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California's June primary showed that voters want competence over ideological theater. In SF, the moderate coalition consolidated around Mayor Lurie while the once-dominant progressive machine fractured into infighting. November's ballot, a one-time tax on the wealthiest, will show whether that momentum can scale statewide. Read the full analysis, from Forrest Liu:
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We want a California that works.
California's pragmatic center is growing. Little-tech founders, nurses, teachers, immigrant business owners, public-safety leaders—united not by ideology, but by a desire for government that actually works. Garry's List is turning that energy into donors, volunteers, and candidates. @garrytan explains why November's ballot represents both an opportunity and a challenge for this growing movement:
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Looking for an early hire in SF for helping with model optimization: spec decoding, GPU kernels, pooling infra, and wants to go deep on vLLM/sglang. Hunger/interest over experience in this case. If you know anyone, DMs open. They’d work directly with me.
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Gbrain is mostly useful at 10,000+ markdown files in your personal brain or company brain
how a simple llm wiki compares to gbrain second brains are getting popular fast, they're one of the main enablers for ai and agents right now. the context you give an agent is what makes it good two frameworks I've been using are the LLM Wiki and Gbrain. here's how they compare, and how to use both underneath they're the same idea, karpathy's llm wiki: you compile raw sources into linked markdown pages your agent reads, instead of redoing RAG from scratch every time both ingest your sources, build a graph out of them, and answer with citations, so the real question is what's actually different an LLM wiki is just markdown and your agent: > it reads your sources and writes linked pages > you ask a question and it reads those pages to answer > you keep it healthy with a lint pass > there's no database, just files, and one user it works well, and karpathy even points out where it starts to break down: > the synthesis drifts after a lot of updates > the context cost grows as the wiki gets big > a wrong claim can harden into fact over time gbrain is that same wiki with an engine built for those exact problems: > better retrieval, vector plus graph plus a reranker, instead of the agent reading pages > it runs on postgres, so it scales past what you could ever read yourself > a 24/7 loop enriches and fixes the wiki on its own, so there's no manual lint > every answer comes with sources and an honest note on what it doesn't know yet > it's multi-user, with access scoped per person and team when to reach for each: > use an llm wiki for smaller projects, to gather and store the context an agent will use later on. when it grows up, you can ingest it straight into gbrain > use gbrain for the consistent, shared things, a company brain or a client brain, especially once more people are involved so it's not wiki vs brain, it's the same wiki run by you on a small project, versus the same wiki run by an engine at scale for a team start simple, then move to gbrain when you outgrow the files
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I just donated to Scott Wiener's campaign. Last weekend clarified the November race better than any op-ed could. Connie Chan has built a strange horseshoe coalition: conservatives who want San Francisco frozen in amber, cars, unaffordable housing and all, and a radical fringe that would rather perform than govern. Two very different aesthetics, one clear allergy to real progress. But beyond politics, Chan has shown a character problem. As a supervisor, she opposed police funding. Then, when her own neighborhood became ground zero for elderly Asian residents being robbed, she ran to London Breed, literally in tears, accusing her of starving the Richmond of police officers. The lack of self-awareness and accountability was stunning. Now, I've been critical of Scott before, particularly on public safety. His policies, particularly his support of prop 47, have had real flaws in my opinion. But unlike Chan, he's delivered meaningful legislation on housing, affordability, and public transit: things that actually shape how San Francisco functions. And last weekend, he showed something harder to register: character. Faced with genuinely hostile behavior, he didn't lose his composure or cave to the moment. He calmly removed himself from the situation, then came back to reaffirm his support for the very community that had confronted him. That's the kind of steadiness and moral compass sorely missing from a Congress that has grown increasingly servile to the President. Vote for @Scott_Wiener!
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Introducing Memory Stargraph, an AI memory Visualizer for GBrain 👏 Memory Stargraph is a local web service for exploring a GBrain knowledge base through an interactive star-cloud entity graph. I built it because my local agent clusters now share the same GBrain-backed memory infrastructure across multiple hosts and agent runtimes. Instead of each agent carrying more context forever, they can rely on a shared, evolving knowledge graph that stays compact, searchable, and useful over time. Memory Stargraph makes that shared memory visible. You can see what agents have created in GBrain, inspect entities, explore relationships, create new nodes, connect them, modify links, attach media, and follow the map as it loads new neighborhoods on demand. It is part debugging tool, part knowledge browser, and part “wait, the agents remembered all this?” moment. It’s also surprisingly mesmerizing. Many thanks to @garrytan for his GBrain work, and I am very happy to be among the serious users of #GBrain#! If you’re interested in setting it up for your own agents: #AI# #AIAgents# #KnowledgeGraph# #LocalAI# #OpenSource# #BuildInPublic# #Codex# #OpenClaw#
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Supervisor Jackie Fielder spent 104 days on PAID leave — the longest any SF Supervisor has ever taken — collecting over $50k while hiding from an ethics investigation into her crypto PUMP-and-DUMP and a probe into her office leaking a memo to sabotage the RESET fentanyl center. While she was gone, drug markets spread and overdose deaths continued in District 9… We are demanding she resign by 5pm Friday. If she refuses, we serve the Notice of Intention to recall Monday. She is not fit to return. Jackie please do what’s best for yourself and the district and resign.
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This is a mini documentary I did about the Homeless crisis in San Francisco’s Tenderloin neighborhood in partnership with @DiscoveryInst1 @DiscoveryCWP please share.
Easily the best AI series available CS 153 at Stanford. Lectures from Jensen Huang, Satya Nadella, Sam Altman
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Build power and datacenters
The worst-case scenario for the United States is becoming increasingly realistic, and I will briefly explain why. @quxiaoyin raised many valid points, and I agree with her. First of all: -China certainly does not place such strong emphasis on open source because it cares so deeply about humanism, but because it is a strategy to attract many users, gain market share, put pressure on US models, and also because the models are increasingly being trained on Huawei hardware (think of DeepSeek 4), allowing China to host the entire stack domestically. -But the underlying logic is far more important: The United States is still building too few data centers to meet future demand. @ChrisGillett wrote an outstanding analysis on this, which I shared a week ago. In short, based on SemiAnalysis data, demand is greater than what is currently being built in terms of data centers. -Even more importantly, however, the United States lacks sufficient energy and grid capacity. This is a problem that will become much more severe in the near future. China, by contrast, is addressing the issue through a massive expansion of its energy supply. Solar capacity: in 2025 alone, China installed as much solar capacity as the United States did in 10 to 15 years. China is also building 36 nuclear power plants, significantly more than the United States, and is installing them faster. -In addition, China is managing to become more independent through Huawei chips, even though the country still lags far behind NVIDIA. But here, China is betting on quantity rather than quality. In short: China is a real threat in the AI race, and the situation for the United States is becoming increasingly precarious. This is also the main reason why China is to be kept away from SOTA LLMs at all costs, so as not to jeopardize the lead under any circumstances.
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New rule: Anyone who is about to write a "all workers will be replaced by machines" essay needs to first read On Machinery by David Ricardo (yes, that David Ricardo), because he probably wrote your essay...in 1817.
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So PSA for anyone who wants to build this A *fantastic* starting point is Hermes + Gbrain You can message it on Slack It has ALL company knowledge Can be invoked in parallel Can use Hermes to code OR have it drive Claude Code or Codex You can connect everything to it But also Your data remains yours You can swap models, personality, and add custom features whenever you want I'm sure @Teknium and @garrytan would agree
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