ChatGPT’s Atlas browser was sunset today. Perplexity’s Comet browser is in zombie mode. When we started @browsercompany nobody cared about browsers, then everyone did (copying Dia), then everyone bailed. Yet I’ve never felt more confident browser : AI :: phone : smartphones.

Hot take… isn’t it kinda crazy that nobody is really using AI Agents? I don’t mean software engineers or AI early adopters. I mean “college friends talking about it in group chat,” the feeling you got when everyone started using Instagram or TikTok. These frontier AI models are *insane* (as are the harnesses & tool calls & the like). And every large tech co has an AI agents platform, not to mention all the YC startups doing vertical agents. Yet all of your friends and family outside of tech — who spend all day staring at their iPhones and get paid to work in browser tabs — don’t really care or find themselves using any AI agents yet. Yes ChatGPT, Claude, etc. are extremely popular… but if you look at the engagement data the vast majority of people are still using these aI chat tools like a glorified Google + Grammarly. That’s why the AGI labs are all pushing desktop apps for Codex, Cowork, etc. so hard to non-technical ppl. And yes exceptions for lawyers and customer service but even those have some asterisks and exceptions to rule. Look I’m not saying the ChatGPT moment for AI Agents is not coming… it most definitely is! Remember we pivoted from Arc to Dia precisely because we believe computing is going to be radically reimagined around these AI primitives. No doubt. But that’s my point: it’s just so surprising it hasn’t happened yet because all of the tech you’d need is there. Again if you stop for a second and think about it… for all the press and money and hype and models and crazy ARR numbers… this “AI Agent” moment does not *feel* like the other breakthrough tech moments we’ve lived through (e.g. think the shift to Stories via Snapchat & Instagram, or shift to on-demand via Uber/Airbnb/Doordash). Which is a long way of saying: if you can figure out the answer to “why” most people don’t care about AI agents yet (and have no enduring interest in using them) — especially since the models and harnesses are here and ready — the answer to that question will allow you to capture a lot of marketshare and make a lot of money in 2027. Theoretically, the tech is ready for AI Agents to totally transform how we work and live our lives… but alas the general public dgaf… that’s the generational puzzle to solve for the next 12 months for anyone not working on the models themselves.

Now you can swipe between Profiles AND AI Context Windows in @diabrowser !! We took the best from @arcinternet's Spaces – refined them even more – & added a dedicated AI harness/model/agent/memory to each It's more fluid context switching (between both Tabs & AI) live in Dia:

Finally decided to give @diabrowser a try after being a die hard Arc user for the last couple of years I just got my first "brief" (basically a daily report) after connecting my tools and lets just say that was the biggest wow effect I had in an AI product for a long time

Looking for a temp office space from September through end of year. We're renovating @browsercompany HQ, and need space for ~15-20 people + a handful of phone booths. Ideally in Brooklyn or Lower Manhattan. In addition to rent will build 1 Dia feature for you as a thank you!!

We’ve quietly been testing @diabrowser for Windows with hundreds of people. Now ready to open it up more broadly! We’ll also be updating on Windows progress every Wednesday. More info on all of the above here 👇

On my mind: “What happens if everything goes right” So easy to be doom & gloom & feel like world is falling apart. But I feel more optimistic daily. “What happens if everything goes right” w/ AI tools, precision medicine, death of old Rep/Dem parties, etc. Vibes are changing!

TIL: Noguchi proposed turning a New York City block into “Play Mountain” — steps of all sizes, a water slide for summer, sledding for winter… all in the middle of the city. Robert Moses nixed it. Bring it back @NYCMayor!

We’re gonna look back on this period as the “we all got too drunk in college / started drinking for the first time” era of AI. AI is going to upend how the economy works, what labor does, how we learn, etc. But a lot of us are going overboard & actually making our work worse.

Windows (for @diabrowser) is way ahead of schedule: from features supported to craft details & visual polish. A fun thing about Season 2 of the @browsercompany is we get to NOT make the same mistakes twice (such as underinvesting in Windows). LIVE DEMO from today:

We'll be shipping like crazy this Winter. @brahmgardner and @gem_ray are leading a crew obsessing over every crevice and detail of Dia browser. It's going to be the tightest, smoothest piece of software the @browsercompany has ever shipped.

New prototyping role just opened @browsercompany. TL;DR - we're getting pitched new APIs, models, etc. all the time, and want someone to be on the frontlines of de-risking what makes most sense for @diabrowser. Working closely with me! DM or email josh@thebrowser.company

Here's what @browsercompany's AI eng & ML teams are working on for @diabrowser right now: (This is a pitch to come work for us; info at end) 🤖 COMPUTER USE – we've built our own bespoke APIs on top of Chromium to optimize latency, accuracy, and cost of computer-using agents. Demo attached. Big breakthroughs here in recent weeks. 🛡️ ON-DEVICE MODELS – we've built our own custom infra to run everything from encoder-only models to full LLMs on device. It's cross-platform, supports LoRa adapters, and optimized for the GPU. This system preserves privacy and enables fast inference times. 🧠 MEMORY – with your permission, Dia automatically tailors your AI experiences to you, personally, based on the tabs you open while browsing normally every day. We're also bringing vertical memory to specific features. ♻️ DATA FLYWHEELS – our Fall/Winter P0 is to double-down on training custom models based on implicit signals from daily use of Dia. Dia should get smarter and more useful the more people use it. Whether via RL, auto-generated prompts, or otherwise. If this work sounds interesting to you please visit our jobs page or email careers@thebrowser.company. Hiring nearly every related role -- from ML engineers to people prototyping with AI and context/prompt writers -- everyone encouraged to apply!!

An update on our new AI browser, Dia: We just wrapped alpha testing with thousands of college students. Felt like the perfect moment to share a raw @browsercompany update on what’s been going on (including demos). So much to catch you up on…