Anuj Abrol

@thedanigrant @matthewrubright Congrats on the great run Dani! I hope you are able to get healthy soon 🙏🏼

Couldn’t be more excited to see @matthewrubright stepping in as the new CEO of Jam! He’s an incredible leader and has been running the ship for the past few months while I’ve been dealing with a severe autoimmune issue, and today we’re making that official as I’m stepping away to focus on recovering. It’s been the adventure of a lifetime to get to build Jam with this insanely brilliant and goofy team and with all of you - the hundreds of thousands of Jammers in 175+ countries changing the world through software. When we started Jam, I never imagined that someone would create the 15 millionth Jam (!!!) or that our product would be used more than 85,000 times a day (often by autonomous AIs, no less) to fix issues fast and get back to what matters, building the future 💜 Watch this team. They are amazing :) I’ll be cheering loudly from the sidelines, big things ahead for Jam! 🍓🚀

You can vibe-code software, but you can’t vibecode a relationship. Affirm CEO @mlevchin explains that while AI makes software cheaper and faster to build, creating real, cash-flow-producing businesses still depends on trust, partners, and scale that can’t be automated: "AI changes everything - but it doesn't change that much." “We make cash-flow-producing assets known as Affirm loans. There are about 40 million of them made every quarter, and growing quickly. It’s difficult to roll out of bed and say, ‘let’s vibecode that,’ because, while you can vibecode some of the code, getting to our scale requires convincing an enormous number of partners to process tens of billions of dollars of loans." "Those relationships are not vibecoded.”

@WillManidis at the top of his game. What’s baffling to me about this discussion is that we somehow assume that this end game is worth having, is the solution to the ontological problem. The world’s greatest founder tweets about how success and wealth don’t bring happiness. But somehow everyone just nods at this, then wants to get back to this business of the end game, the Tower of Babel. To get theirs. There’s nothing inherently wrong with building this tower - the people railing against progress don’t really have a compelling alternative to offer - but there’s a reason every religion in the world eschews the mindless pursuit of worldly riches and glory. There are two great tragedies in a human life - not getting what you want, and getting what you want. And that’s just the point of it. In the end, there is only the mid game. The greatest people I’ve met seem to deeply understand this.

@AntaresNuclear Let’s go Antares team!

The Department of Energy has formally approved our Preliminary Documented Safety Analysis (PDSA) for the Mark-0 reactor—our first demonstration reactor, scheduled to go live before July 4, 2026. Mark-0 will validate fueling operations, reactor controls, and core physics. This demonstration is a critical step toward generating electricity from advanced microreactors. Mark-0 uses a full-scale core and the same facility and fuel that will support our next reactor test in 2027. The PDSA defines the preliminary safety basis for the reactor, facility, and planned operations, demonstrating that our approach meets DOE expectations at this stage. This approval validates our safety case and establishes a clear pathway to final acceptance as we prepare for fabrication, assembly, and installation. Mark-0 will be tested at Idaho National Laboratory in Building 793—now the Reactors and Critical Experiments facility—a site with deep nuclear history. Decades ago, this building housed ML-1, the Army’s first mobile nuclear reactor. Today, it supports the next generation of deployable nuclear power. We find the historical relevance fitting and inspiring, as Antares develops a similar-scale microreactor to meet Army operational and installation needs. Since 2024, we’ve worked to establish this facility as an enduring testbed, enabling rapid progress without the need for groundbreaking construction. We’re grateful for our partners at DOE and INL, and for leaders like Congressman Mike Simpson who continue to support the American nuclear renaissance.

@celinehalioua Congrats Celine!

our dog longevity drug LOY-002 has earned FDA safety approval we now have 2 of 3 major sections of our New Animal Drug Application complete (!) if (when) we earn FDA manufacturing approval, Loyal will launch the *first FDA-approved lifespan extension drug*

@bonatsos @generalcatalyst Congrats Niko, onwards!

After 15 wonderful years @generalcatalyst I am moving on to new adventures. The best days for GC are ahead! Super grateful to every single one of my teammates that I had the fortune to work with over the years. I learned a lot. Very thankful to our limited partners too for their long-term support. Equally importantly, it's been the privilege of a lifetime to work with so many inspiring tech startup founders from the very early days.

imagine if google hadn’t flinched & kept boston dynamics which they had bought for cheap in 2013, you’d basically have: - perception layer (search, maps, vision) - cognition layer (deepmind) - embodiment layer (bd robots & waymo) - distribution (android, chrome, cloud) - capital + patience google bought boston dynamics then immediately got spooked by their own employees. humanoid robots + military history + viral videos = instant evil robot discourse. google mid 2010s was peak moral theater.

@rmcentush Elite ball knowledge

i think about this a lot

@packyM 1 presenter + 5 essays!

@nujabrol now we have one too many obamas

fixed it.

@julianweisser 🙏🏽

Accidentally opened a Google Sheet for an SPV I ran over 5 years ago. Messaged about 50 prospective backers. 9 ended up investing. In hindsight, that was a good hit rate (~18%). Half a decade later, it’s as clear as ever that it will be a generational company.

So well done - awesome work @julianweisser!

@JasonrShuman Congrats Jason!

15 months ago I met Meltem at a VCs wedding in Turkey. A couple of weeks ago she thought we were getting dinner with an LP of ours… She even asked for a briefing on the way. Instead she became my fiancée. #Engaged

@AntaresNuclear Go Antares team! To infinity and beyond! ⚛️

6 months in Huntsville → our first full-scale prototype built and tested. Full-scale components. Real temperatures. Real pressures. Real data shaping the reactor we’ll take critical in 2026.

@gauravahuja Congrats Gaurav, looks beautiful!

We are releasing a book today. Artifacts: A visual history of technology from 1965 to the Present. 59 years. 296 breakthrough moments. 403 images. A clean chronology of the innovations that built the modern world. From microprocessors to mobile to AI. Technology is the greatest story of human optimism. It is the belief that fragile ideas can become world changing platforms. Artifacts is that story, in print. A curated gallery of modern computing that fits on your desk. Proud to share it. Link in comments.

@celinehalioua @strandbrown 💗

Della passed away this weekend after three amazing years with us She was gentle, sweet, loving, brave, hilarious, and everything in between - truly an angel on this earth

@jaltma Nothing better than unbounded conversations while enjoying nature 🏌🏼‍♂️

A beautiful little ode to golf ⛳️ I just started playing last year and I'm little embarrassed to admit it because it's associated with a lot of things I don't like (clubbiness, exclusivity, privilege, etc) But the game itself is beautiful and I agree with everything he said.

@david__booth @a16z @eriktorenberg Congrats David!!! Let's get that flywheel going

ok some personal news: 1. I'm joining @a16z! 2. my family and I are moving back to San Francisco 🇺🇸 👋 I’m joining a16z as a Partner and Head of Ecosystem. Excited to be teaming up with @eriktorenberg for a second round, continuing what has become my life’s work. I'll be focused on expanding and reinforcing the multitude of networks spanning our firm; building pipelines for emerging talent, customer networks; products and communities that help founders, operators and investors connect and build together. Feeling charged up, time to build. Some thoughts on why + what 👇 1- "Preferential Attachment" is how startups win. It starts with @pmarca, in conversation with John Collison and Charlie Songhurst on "Cheeky Pint": "…a startup needs to get into a loop where it’s accruing more and more resources as it goes… qualified executives, technical employees, future downstream financing, positive brand momentum, public perception, customers, revenue, ability to throw weight in the government… all of these resources you need to succeed as a business. You’re either a snowball rolling down the hill, picking up resources, gaining size and scope and scale, power, credibility as you go... or you’re not – you’re stuck at the top of the hill as a snowflake, and you’re just not going anywhere." "…the question becomes how do you get started? ...to the point where the next resource that you need is more likely to attach to your thing, as opposed to somebody else. That’s the mechanical process that drives the power law. Economists call it preferential attachment.” Startups win when everything in their world starts to preferentially attach to them. That attachment doesn’t always come naturally... when a company is early in its life, or when a person is early in their career, there’s a trust and credibility hurdle that must be overcome. Friends or supporters could help catalyze an attachment by staking some of their reputation and/or capital, for example a young person with no assets trying to buy a house might ask a trusted friend, family or community member to “co-sign” their mortgage. Raising from a top-tier VC is another such “co-sign.” As Marc continues… “…a top VC is a bridge loan of credibility at a point in time where a startup deserves credibility but doesn’t have it yet. This is then harvested in the form of personnel, customers, brand.” More and more, we see that the Series A and/or B round lead (or absence thereof) is the strongest leading indicator of the ultimate outcome. One bet I’m willing to take is that as everything around us becomes “technology” and earlier stage VC continues to institutionalize, this will only become more true. 2- VC has traditionally done “preferential attachment” non-scalably. Venture capital firms win through building personal trust, hands-on partnership between GPs and their founders. GP “value add” comes via their ability to allocate personal time and attention, make introductions into their personal network, maintain a sense of intimacy with the company and context around the challenges it’s trying to overcome. This has always been the job of the VC. Some do it better than others. But intimacy doesn’t scale. Each new investment divides partner attention further. You can add headcount, platform functions, but traditional ‘services’ approaches hit diminishing returns to scale. Moreover, it doesn’t help you with all of the follow-on preferential attachment that has to relentlessly compound in the snowball’s trip down the hill; nearly as much as you’d like. As a result, venture can feel like the opposite of a network-effect business: the bigger the portfolio, the more dilute your attention, and the weaker VC’s incremental value-add on helping any particular snowflake attach to the snowball. 3- It doesn't it need to be that way. For years I’ve been obsessed with this idea of “turning VC into a network effect business.” One of my early career inflection points was joining AngelList in 2014, where I first saw how software could turn networks into infrastructure—removing friction from company formation, capital raising, hiring, and distribution. This became a thread that would weave throughout my subsequent decade and ultimately led to my teaming up with Erik the first time in 2017, himself fresh out of a similar formative experience at Product Hunt. The insight: VC firms need to think like networked product builders, not just service providers. Instead of dividing attention across n+1 companies, you build systems where value compounds... where founders connect to other founders; where operators can access expertise across the portfolio & broader firm's network; where any "ask" becomes a rallying point for those who share an interest in the topic. Every company you back expands that network, every talented individual who joins becomes another n^2 on it's value as a whole. This is what unlocks scalable preferential attachment. A strong brand signals credibility. A large network provides resources. But each on its own is not enough. The combination—a brand that attracts top talent into a network that makes them more successful, creates a compounding loop that helps drive power law outcomes. The result: a shift from diminishing returns to compounding value. Intimacy and direct relationships with GPs remain central. But those GPs now have a very long lever with which to help founders move the world, and can focus their time/attention on the really critical decisions that founders are facing. A16z is one among very few who have managed to cross this chasm—delivering intimacy and exclusivity on the front end (direct relationships between vertical fund GPs and founders), AND network power on the back—operating a platform that institutionalizes access to resources at a scale few yet understand. 4- We are building the F1 pit crew of venture. Big VC is like Formula 1. Hyper-competitive. Big budgets. Media & brand-driven. Top teams need to win hearts and minds, as well as races. GPs are the drivers—instinctive, highly attuned to the conditions on the road, thinking about what lies around the next bend. The greats go on to become household names, and go on generational winning streaks: Lewis Hamilton, Michael Schumacher… Don Valentine, Marc Andreessen. But when Hamilton stands on the F1 podium, it’s easy to miss the work that went on behind the scenes to get him there. Races are won or lost years in advance by teams who design the right chassis, hire the right engineers, drill their pit crews, build cult-like fanbases to keep the sponsor dollars flowing. VC is the same. The GP has to win the deal. It’s easy to glamorize the Partner who get to stand by the founder ringing the NYSE bell. But at the best firms there’s an invisible engine behind them, a “Pit Crew” that must execute immediately and flawlessly, every time. Adrian Newey didn’t win any races — but his arrival as CTO at Red Bull transformed them from a cash-burning midfield team into a generational, world-champion franchise. And the generational VC firms of the next decade won’t just have the best drivers; they’ll also make deliberate, thoughtful investments in the machines they drive. I believe a16z is the most effective preferential attachment machine in the world—but we're going to make it even better. If “marketing” is the top-down vector of storytelling, “ecosystem” is the bottom-up vector of trust. While marketing expands brand and visibility, helps shape the conversation; ecosystem creates the rooms and networks in which those conversations take place. Ecosystem is the hidden operating system of venture. It’s an understanding that today’s senior product manager is tomorrow’s founder; today’s founder becomes tomorrow’s angel investor or advisor. It’s about building the infrastructure to support those 5-10 year journeys as they play out. When the two are in sync, you get the compounding engine that made Silicon Valley what it is: a dense network of people who believe in the same future—willing, and able to build it together. I’m stoked to come back to SF and help make it happen. We’ll be launching new communities, opportunities soon… for now, if you’re exploring—or in the very early stages of starting a new company, drop me a DM or email via dbooth@a16z.com ++ follow @david__booth for more updates, opportunities to get involved. See you soon! 🫡

@andrew__reed Innovation is life

My view driving to work, beautiful Monday