Anthropic is acquiring @stainlessapi, an SDK and MCP server platform that has powered every Anthropic SDK since the earliest days of our API. Read more: anthropic.com/news/anthropic…

found the DSPy / GEPA corner at the Anthropic booth with @tarunsachdeva and @thomastjoshi

Join us on Dec. 1 for an evening of Q&A on agentic product engineering, co-hosted with @browsercompany and @clay. ​​​We’ll dive into topics like ​where agents outperform deterministic code, managing latency and cost limits, and prototyping without over-architecting.

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

Less invites, more ships. Dia is now open to everyone on macOS. Download now: 🔗 in bio

The @browsercompany just signed a merger agreement to be acquired. We will remain independent. Our focus is Dia. I’ve written and rewritten this post more times than I’d like to admit, but what I keep coming back to is simple: the work continues, and we’re grateful for this moment. The work continues because when I stop by the coffee shop near our office, nobody is using Dia yet. Our “internet computer” vision hasn’t been realized. Dia hasn’t yet changed how you work on a Tuesday morning. This deal is about giving us the resources, distribution, and monetization muscle to get there. At the same time, it feels disingenuous not to pause and briefly celebrate this milestone. It reflects our team’s craftsmanship and relentlessness, the support of our coaches, board members, and advisors, and the incredible effort from our deal team: Ryan Purcell from Gunderson, Nancy Peretsman and Leah Schwartz from Allen & Co., and Clare, Abby, Eissra, Rebecca, Cory, Nash, and Hursh from The Browser Company. Most of all, we’re grateful for what this means for Dia. It means we can hire faster, ship faster, and bring Dia to more people. We can now invest in cross-platform support and secure syncing, train custom AI models designed specifically for Dia, and turn ambitious ideas about “computer use” and “memory” into reality. To everyone who’s filed a bug, sent feedback, or shared a kind word: thank you. We haven’t always gotten it right, but we’ve always cared deeply. That will never change. Dia isn’t going anywhere. We’ll be here for the long haul, with the same team just a new partner helping us push further. We’ll take a breath this weekend, and then get back to work. Big launch next month. In the meantime...

The @browsercompany just signed a merger agreement to be acquired. We will remain independent. Our focus is Dia. I’ve written and rewritten this post more times than I’d like to admit, but what I keep coming back to is simple: the work continues, and we’re grateful for this moment. The work continues because when I stop by the coffee shop near our office, nobody is using Dia yet. Our “internet computer” vision hasn’t been realized. Dia hasn’t yet changed how you work on a Tuesday morning. This deal is about giving us the resources, distribution, and monetization muscle to get there. At the same time, it feels disingenuous not to pause and briefly celebrate this milestone. It reflects our team’s craftsmanship and relentlessness, the support of our coaches, board members, and advisors, and the incredible effort from our deal team: Ryan Purcell from Gunderson, Nancy Peretsman and Leah Schwartz from Allen & Co., and Clare, Abby, Eissra, Rebecca, Cory, Nash, and Hursh from The Browser Company. Most of all, we’re grateful for what this means for Dia. It means we can hire faster, ship faster, and bring Dia to more people. We can now invest in cross-platform support and secure syncing, train custom AI models designed specifically for Dia, and turn ambitious ideas about “computer use” and “memory” into reality. To everyone who’s filed a bug, sent feedback, or shared a kind word: thank you. We haven’t always gotten it right, but we’ve always cared deeply. That will never change. Dia isn’t going anywhere. We’ll be here for the long haul, with the same team just a new partner helping us push further. We’ll take a breath this weekend, and then get back to work. Big launch next month. In the meantime...

Would you pivot away from a product with millions of users? That’s exactly what @browsercompany did with @arcinternet. The internet backlash was intense, but cofounders Josh (@joshm) and Hursh (@hursh) saw that AI was about to make the web something you talk to, not just click into. The best home for a powerful AI assistant was the thing that's already between you and the internet—the browser. And they realized they couldn’t just duct-tape it on to Arc. One year of heads-down work later, the team launched @diabrowser in beta, and people are raving about it. Dia is a sleek, fast, browser with AI at its core—it gets better with every tab you open, becoming more and more helpful with time. And even though it’s still early, Josh and Hursh’s big pivot looks like one for the ages. This week on @every’s AI & I, Josh and Hursh joined me for their first full-length podcast about their pivot from Arc to Dia. We talk through their decision-making process, the very public backlash the company faced, and the grit it took to stay the course. We get into: The personal toll of their decision to pivot a beloved product like Arc “I think it's safe to say last year sucked. It really did,” Josh admitted. Hursh agreed that “some days you just wake up and you have to play the part of getting through the day.” The challenge of the “novelty tax” limited Arc New products get to “change one thing and have that…be the thing you talk about,” said Josh. Arc was too new on too many fronts for mass adoption. Dia is intentionally simple—it has the same vibes that Arc had but in a much cleaner package. Arc Search was the turning point They built Arc Search as a side project. Josh tweeted it on a Sunday before boarding a flight. It exploded more than anything they'd ever made—and showed them the future wasn't about tabs, it was about AI understanding intent. Dia’s memory feature went from impossible to magical overnight Dia’s core promise is that the browser learns from the way you use it. But after nine months of struggling to build memory into Dia, the team shelved the feature—until six weeks before launch, when Hursh had a hunch that the technology was finally there. They got it working “pretty much overnight.” Skills are the real unlock People are creating their own AI apps inside Dia. Someone made one to learn how to play a guitar from YouTube videos. Josh calls it "handmade software"—letting non-coders build tools for themselves. They shipped Dia expecting to get roasted. Instead, people loved it "People saw what we saw," Josh said, still surprised. A year of hell taught them one thing: When your bones tell you something, listen—even when the world says you're wrong. This is a must-watch for anyone interested in building the future—and what it takes to bet on your instincts, especially when everyone else thinks you're crazy. Watch below! Timestamps: 1. Introduction: 00:01:13 2. The story of how I might’ve been the CEO of The Browser Company: 00:02:47 3. The moment Josh and Hursh knew they had to walk away from Arc: 00:09:42 4. How to handle the weight of the unknown in a pivot: 00:17:08 5. The prototype-driven culture that kept The Browser Company alive: 00:23:31 6. Why having a product loved by millions of users isn’t enough :00:25:42 7. The architectural decisions underlying how Dia was built: 00:33:29 8. How Dia almost shipped without its best feature: 00:47:12 9. The best ways people are using Dia in the wild: 00:51:18 10. How Josh and Hursh think about competing with incumbents: 01:07:55 11. How romanticism informs the product decisions behind Dia: 01:17:04

The “Skills” system is wild. I set up custom workflows—like a daily digest of design trends, automatic research summaries, and even quick shopping comparisons. It’s like having a personal research team built into my browser. 3/7

I wrote about the design of Dia. - How did the @browsercompany design team rally around the idea to make a ‘boring’ web browser? - What purpose does the design serve? - Where is Dia’s design going next?

Last week @diabrowser launched in beta Here's a preview of what's next A new prototype we're testing & thinking about Should we add this to Dia?

Meet Dia. Now available for Arc members.

Personal update: I joined @browsercompany as a prompt engineer to help build @diabrowser Super excited about what we are building and can’t wait to bring it to the world

A new chapter begins today... I'm joining @browsercompany as GM of platform!

Hey all, I’m excited to announce that Arc is now natively available on Windows Arm64 devices as of TODAY!! 🥳 Go hit that download button from arc.net and as always, please let us know if you have any issues 🙏🏼

Exclusive: Braintrust, which helps Airtable, Brex, Notion and Stripe build AI products, has raised $36M in a Series A led by a16z. The one-year-old startup offering LLM evaluations and monitoring is now valued at about $150M, a source tells @Forbes. forbes.com/sites/alexkonrad/…

Last Friday, we promised changes to @browsercompany's security. One week later, here's action: ✅ Arc's 🆕 Bug Bounty Program is live ✅ Arc's 🆕 Security Bulletin is live ✅ We redesigned internal security processes Much more to come, details in thread 👇