Simon Willison on anthropic
The most convincing story about capabilities of the new model so far is Nicholas Carlini from Anthropic talking about Opus 4.6 and Building a C compiler with a team of parallel Claudes - Anthropic's …
Hidden AI instructions reveal how Anthropic controls Claude 4
On Sunday, independent AI researcher Simon Willison published a detailed analysis of Anthropic's newly released system prompts for Claude 4's Opus 4 and Sonnet 4 models, offering insights into …
Claude 4: Anthropic’s Hidden AI System Prompts Explained
Aug 7, 2025 · On Sunday, independent researcher Simon Willison published a deep dive into Anthropic’s system prompts for its latest Claude 4 variants—Opus 4 and Sonnet 4.
Hidden AI instructions reveal how Anthropic controls Claude 4
May 27, 2025 · On Sunday, independent AI researcher Simon Willison published a detailed analysis of Anthropic’s newly released system prompts for Claude 4’s Opus 4 and Sonnet 4 models, offering …
Simon Willison’s Weblog - vuink.com
May 25, 2025 · Anthropic publish most of the system prompts for their chat models as part of their release notes. They recently shared the new prompts for both Claude Opus 4 and Claude Sonnet 4. I …
Simon Willison’s Weblog
Don’t “Trust the Process” (via) Jenny Wen, Design Lead at Anthropic (and previously Director of Design at Figma) gave a provocative keynote at Hatch Conference in Berlin last September.
Claude’s Hidden Superpowers: Simon Willison Unzips Anthropic ...
Oct 17, 2025 · What happens when Simon Willison asks Claude’s code interpreter to zip its own “skills” folder? 🤯 Turns out, Claude happily spills a treasure trove of tools — from editing Word, Excel,...