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…↗

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 …↗

🚨 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…↗

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. https://t.co/k0CWAGjLdK↗

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 …↗

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. 🧵 https://t.co/Y5ZZDNxPUX https://t.co/zrHgmlH1Mg↗

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 facilit…↗

Cognition is acquiring @Interaction, the makers of Poke. If you've ever used Poke, you know why we're so excited. https://t.co/y3VwSnwsT3↗

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. ht…↗

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. https://t.co/QCIz6DnQnN https://t.co/lNmo4Z7U3p↗

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…↗

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↗

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 https://t.co/HGr5lFuAZA↗

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…↗