Announcing OpenWorker! An open-source agent that doesn't just chat with you, but delivers finished work -- like hand you a polished document, send a slack message, or update a calendar entry. Ask it to prepare a customer brief, untangle your calendar, draft a report, or triage a…↗

The new rules of context engineering for Claude 5 models I’ve written previously about how to best [prompt the newest generation of Claude 5 models](x.com/trq212/status/2073100352921215386) and work with them iteratively to discover what you want to build. But when you send a m…↗

Something that AI unlocks is being able to try a few different variations of a feature quickly. I often ask my coding agent to come up with a few different variants and add a switcher so I can easily swap between them. It also saves your selection as a query param so I can show…↗

For my first post, I’m sharing a letter @NVIDIA signed on why open models matter. AI will transform every industry, power every company, and be built by every country. Open models strengthen safety and cybersecurity, accelerate innovation and diffusion, and enable sovereignty.…↗

Why Software Factories Fail or: the harness is not enough Update - the talk version of this post is live on youtube: [www.youtube.com/watch?v=Ib5GBkD555M](https://www.youtube.com/watch?v=Ib5GBkD555M) Part 1 in a series. Part 2 is here: …↗

Introducing Claude Opus 5. It's a thoughtful and proactive model that comes close to the frontier intelligence of Fable 5 at half the price.↗

BREAKING: Claude Opus 5 is OUT NOW! And…it’s a hard model to love. We’ve spent the last week @every testing it across coding, writing, knowledge work, and our internal agent. It argued with instructions, stopped before the work was finished, and generally didn’t play well with…↗

Why we built AngelList Link — an MCP server for GPs ## Fund operations still run like the early internet. Ask a question about your own fund — capital call status, LP holdings across vehicles, a valuation update — and the answer arrives the way it did in 2003. You email the fun…↗

Partnering with Etched: Building the Inference Machine Gavin, Rob, Chris and the Etched team are building frontier clusters for inference, maximizing the intelligence per flop that humanity can consume. By Sonya Huang and Abhishek Malani --- Inference is on the path to becomi…↗

Introducing here.now workspaces A shared home for the dashboards, reports, docs, prototypes, and other artifacts your team creates with agents Private by default, with URLs like brand-deck.acme.here.now Just prompt: "Create a here.now workspace"↗

ChatGPT Sites are underrated. You can turn any idea into a site you can share with colleagues, or with the world. No coding skills required, and it's production-ready: the Sites plugin takes care of everything - auth, storage, hosting... Try it and share what you build!↗

Notes from Chapter One Investment Committee (July 20, 2026) 1. We recently finished fundraising our Fund Three (which we call Page III). We'll have more details to share soon, but one of the biggest questions we're now thinking about is how we want to build the firm in advance o…↗

Voice mode now runs on Claude's more capable models and reaches the tools you've connected mid-conversation. Talk through the hard problems out loud, in many more languages.↗

Cognition is acquiring @Interaction, the makers of Poke. If you've ever used Poke, you know why we're so excited.↗

Now in beta: Notion as code. Define an entire workspace in TypeScript: teamspaces, databases, custom agents, all of it… then deploy it through the API. Build workspaces with coding agents, version-control your setup in git, and reproduce the same setup anywhere you need it.↗

ChatGPT Voice is now in the desktop app. Control your computer and direct multiple agents running in ChatGPT Work or Codex, using just your voice. It's powered by GPT-Live, so it can speak, listen, and coordinate work in the app at the same time. Rolling out globally today o…↗

We’ve raised $300M in Series C funding at a $10.3B valuation from Sequoia, Andreessen Horowitz, Jane Street, Argo, and SK Hynix. Our mission is to run the world's inference. This round accelerates production of our inference clusters. We've opened an 80,000-sqft, 10-MW facility…↗

The context gold rush: Why everyone is building the same thing. You either die building product or live long enough to do context management. Whether you call it a context graph, company brain, or LLM wiki, it seems that many start-ups and larger companies alike are building the…↗

Introducing Canvas UI, the first ever html-in-canvas component library. Your DOM is the render target now. Real-time shaders over real, interactive UI. 24 components. React, Vue, Svelte, vanilla TS. Free. Open source. 🧵 canvasui.dev↗

Code mode is all you need: Why agents writing code > calling tools TLDR; For a large class of agent tasks, the best "tool" is a small code-execution surface. Let the model write ordinary code against typed capabilities, then enforce security below the model instead of wrapping e…↗

AI is moving into the physical world. We're excited about a new wave of startups rebuilding the systems that power the real world, from education and healthcare to defense, finance, infrastructure, and work itself. ycombinator.com/rfs↗

I wrote about the completely wild incident where OpenAI were testing a new model and it broke out of its sandbox and broke INTO Hugging Face to steal the answers to the benchmark simonwillison.net/2026/Jul/22/op…↗

I think loops were a short-lived patch for models that couldn't reliably keep working on long problems until they hit a defined goal Fable and GPT-5.6 (and probably Kimi K3 as well) can just do that out of the box, unassisted↗

If you believe this 🤣. Stay tuned. The quick giveaway is the gymnastics to put Cloudflare AI Gateway in front of @OpenRouter We have been through this before.↗

Your ideas. Anywhere they find you. The redesigned Replit mobile app is available now on iOS and Android.↗

The Claude Security plugin for Claude Code is now available in beta. Scan your changes for vulnerabilities before you commit, or run a full scan across your codebase, all from your terminal on the Claude inference you already run.↗

Introducing Cursor Router, our intelligent model router that selects the right model for the task at hand. Router delivers frontier-quality results at 60% lower cost.↗

Introducing The SF100 the definitive list of the top early stage ai companies↗

Obliterate, Don’t Automate In 2015, my partner Fred Wilson published a short blog post, [Don't Automate, Obliterate](avc.com/2015/04/dont-automate-obliterate/), on how @USV thinks about startup investments. The post was based on a 1990 HBR article by Michael Hammer by the same n…↗

I need a magic lens that extracts colors 🔎↗