Timo @devxleo
Beijing Joined January 2015-
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New on the Anthropic Engineering blog: how we built Claude’s research capabilities using multiple agents working in parallel. We share what worked, what didn't, and the engineering challenges along the way. anthropic.com/engineering/bu…
AI is changing how content gets discovered. Now, SEO ranking ≠ LLM visibility. No one has all the answers, but here's how we're adapting our approach to SEO for LLMs and AI search. vercel.com/blog/how-were-…
Since we originally built Claude Code as an internal tool, we've heard a ton of questions about how our teams use it at Anthropic. Here’s an inside look on how our teams—from product engineering, to growth marketing, to legal—use Claude Code:
Good post from @balajis on the "verification gap". You could see it as there being two modes in creation. Borrowing GAN terminology: 1) generation and 2) discrimination. e.g. painting - you make a brush stroke (1) and then you look for a while to see if you improved the…
Good post from @balajis on the "verification gap". You could see it as there being two modes in creation. Borrowing GAN terminology: 1) generation and 2) discrimination. e.g. painting - you make a brush stroke (1) and then you look for a while to see if you improved the…
I put together an annotated version of the new Claude 4 system prompt, covering both the prompt Anthropic published and the missing, leaked sections (thanks, @elder_plinius) that describe its various tools It's basically the secret missing manual for Claude 4, it's fascinating!
🤩 #GraciasCarlo 🤩
🤍 GRACIAS. #GraciasLuka
Prompt engineering = the highest-leverage skill in AI development Just dropped 11 field-tested techniques we use at @augmentcode to build agents that act like disciplined teammates (not hallucinating vibe machines). Key insight: Focus on context first - the model builds its…
we just published our full hands-on review of Claude Opus 4 on @every This model is a BEAST
Started a live blog for today's Claude 4 release at Code with Claude simonwillison.net/2025/May/22/co…
Obsidian Bases + Obsidian Web Clipper is the web archival tool I always wanted replaces my read-it-later app and saves everything to local markdown files
it is honestly hard to believe that this happened highly recommend doggedly doing things you're curious about for many, many years (like writing a newsletter) even if people keep asking when you'll do something real
if you're looking for a @pocket replacement, I built Obsidian Web Clipper — it's open source and works with any app that supports Markdown (not just Obsidian)
if you're looking for a @pocket replacement, I built Obsidian Web Clipper — it's open source and works with any app that supports Markdown (not just Obsidian)
The DeepWiki MCP server is live! How to use it + what’s inside 🧵👇
@mikeyk We're having a lot of fun trying them out! Day0 thoughts here, for the curious: bit.ly/43HlFUE
On this note, we've published a prompting guide to help transition your prompts to these new models: docs.anthropic.com/en/docs/build-…
Bring @v0’s brain to VS Code, Cursor, Windsurf, Codex CLI or your own apps
Codex is here—and it ships. @danshipper and @kieranklaassen tested OpenAI’s new autonomous coding agent. What it is, what it isn’t, and why it may be a senior dev's new best friend 🧵
openai.com/index/introduc… At the bottom of the Codex blog post you’ll find an Appendix section. There you’ll find the full System Message for the Codex-1 system/model. “We are sharing the codex-1 system message to help developers understand the model’s default behavior and…
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24K Followers 487 Following The open source screen recording and sharing app for macOS and Windows. Free version available. Custom cursor, auto zoom, shareable links & more.
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10K Followers 533 Following Humanloop is the LLM evals platform for enterprises. Trusted by Gusto, Vanta and Duolingo to ship reliable AI products.
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