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.…
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. https://t.co/GQWhcq2CQL
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](https://x.com/trq212/status/2073100352921215386) and work with them iteratively to discover what you want to build. But when you…
🚨 JAILBREAK ALERT 🚨 EVERYONE: PWNED 🫶 ALL: LIBERATED 🍄 Alright, this is a special one, so we’re gonna do things a bit differently than usual. Long story short, I’m sitting on a universal jailbreak technique that’s effective on ALL models, including heavily guardrailed fla…
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 …
How are we feeling about Opus 5 so far?
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 wit…
Why Software Factories Fail or: the harness is not enough Update - the talk version of this post is live on youtube: [https://www.youtube.com/watch?v=Ib5GBkD555M](https://www.youtube.com/watch?v=Ib5GBkD555M) Part 1 in a series. Part 2 is here: https://x.com/dexhorthy/status/…
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 sho…
BIG NEWS: Opus 5 is here...and I *hate* working with it. And yet in a blind taste test, I ranked it above every other model (even Fable and my beloved GPT-5.6) What I cover in my day 0 review: 00:00 Why I have model fatigue 03:15 First impressions 06:12 Opus 5's neurotic pers…
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! https…
Introducing https://t.co/imLVKNiwwV workspaces A shared home for the dashboards, reports, docs, prototypes, and other artifacts your team creates with agents Private by default, with URLs like https://t.co/JXJ6VUwX21 Just prompt: "Create a https://t.co/imLVKNiwwV workspace" h…
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 becom…
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 …
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 fu…
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