April 20, 2026 Claude System Prompts as a Git Timeline: What Opus 4.7 Reveals About Anthropic's Priorities Claude System Prompt Opus 4.7 Anthropic Simon Willison
April 3, 2026 Simon Willison on Lenny's Podcast: 'Four Parallel Agents and I'm Done by 11 AM' Simon Willison Agentic Engineering Developer AI Agents
