Using Claude Code: The Unreasonable Effectiveness of HTML This is now also on the [Claude Blog](https://claude.com/blog/using-claude-code-the-unreasonable-effectiveness-of-html). Markdown has become the dominant file format used by agents to communicate with us. It’s simple, p…↗

New Anthropic research: Natural Language Autoencoders. Models like Claude talk in words but think in numbers. The numbers—called activations—encode Claude’s thoughts, but not in a language we can read. Here, we train Claude to translate its activations into human-readable text…↗

Introducing GPT-Realtime-2 in the API: our most intelligent voice model yet, bringing GPT-5-class reasoning to voice agents. Voice agents are now real-time collaborators that can listen, reason, and solve complex problems as conversations unfold. Now available in the API along…↗

Codex now works directly in Chrome on macOS and Windows. It’s even better at working with apps and sites in Chrome, and now works in parallel across tabs in the background without taking over your browser. To get started, install the Chrome plugin in the Codex app. https://t.c…↗

Virtually nobody is pricing in what's coming in AI. I wrote an essay series on the AGI strategic picture: from the trendlines in deep learning and counting the OOMs, to the international situation and The Project. SITUATIONAL AWARENESS: The Decade Ahead https://t.co/8NWDkTprj5↗

New Anthropic research: Teaching Claude why. Last year we reported that, under certain experimental conditions, Claude 4 would blackmail users. Since then, we’ve completely eliminated this behavior. How?↗

Just gonna leave this here. https://t.co/EOI980j9e9 https://t.co/HxbCl2Izcz↗

React Doctor v2 is here Your agent writes bad React code, this catches it Works with Next.js, Vite, React Native. Fix your app in minutes npx react-doctor@latest https://t.co/SEFExJ2EWU↗

The next biggest moat in AI It's pretty obvious to everyone that everything in AI is converging. Companies I couldn't have imagined competing with each other are today. The application layer is collapsing into infrastructure, infrastructure companies are moving up into workflow…↗

Learning on the Shop floor Years ago I wrote about my [apprenticeship in Germany](https://tobi.lutke.com/blogs/news/11280301-the-apprentice-programmer). I dropped out of school at 16 and went to work at a Siemens subsidiary, where the most interesting people sat in the basement…↗

Introducing zero-native Build native desktop + mobile apps with web UI and Zig → Tiny binaries, low memory usage → Selectable web engines (WKWebView, WebKitGTK, WebView2, Chromium/CEF) → Next.js, Vue, Svelte, Vite, React → macOS, Linux, Windows, iOS, Android https://t.co/gMBin…↗

Last week we shipped 50+ Claude Code reliability fixes. This week it's 60+ more. Smoother long-running sessions, a more efficient agent loop, auth that works in more environments, and terminal fixes: 🧵↗

Agent Harness Engineering A coding agent is the model plus everything built around it. Harness engineering treats that scaffolding as a living artifact, tightening it every time the agent makes a mistake. Simply put: whenever an agent fails, you engineer a permanent solution s…↗

Introducing the Printing Press, a CLI-factory and a CLI-library. Built with @trevin. 🏭🖨📚 Most APIs suck for agents. Most MCPs suck for agents. Most official CLIs suck for agents. They waste tokens and time. @steipete started making his own because of this. 📚 A Library of a…↗

Peekaboo 3.0 is live. Biggest release since 2.0. ⚡ Action-first macOS computer use 👁️ Unified screenshot + UI detection 🧩 Cleaner JSON across CLI + MCP 🛠️ Better snapshots I started this last year, but the models just weren’t good enough. Now they are. https://t.co/0wvhR0NW…↗

a little project i've been hacking on: https://t.co/zTuwWy44ly bugs expected. more topics soon.↗

Whenever I investigate a bug, I let codex recreate the exact state in an emphemeral crabbox, verify the bug, fix it, verify the fix. No messy state because local system might be polluted, and no slowdown because I run 10 sessions in parallel. https://t.co/SEj2XRpaD1 https://t.c…↗

Codex 0.130.0 is released. Highlights: - Added `codex remote-control` as a simpler entrypoint for starting a headless, remotely controllable app-server. - Plugin details now show bundled hooks; plugin sharing exposes link metadata and discoverability controls. - App-server clie…↗

The more I replace plans with prototypes, the better the outputs Who'd have thought that low fidelity prototypes were better than walls of spec Oh yeah, the entire industry for 20 years Stop going against decades of knowledge because someone in SF shipped it as a 'mode'↗

Multiple security vulnerabilities affecting React Server Components and Next.js have been disclosed. We strongly recommend updating your applications immediately. Cloudflare WAF managed rules already mitigate the disclosed denial-of-service vulnerabilities, and we are investiga…↗