VIBE CHECK: CLAUDE 4 OPUS

Summary from the TLDR Founders newsletter

Anthropic's new Claude 4 Opus crushes coding tasks and does something no other AI can - it edits your writing honestly instead of telling you everything is great. While it's not replacing ChatGPT for daily tasks, Opus one-shotted complex pull requests and built a 3D weather game in 15 minutes. The real standout is its honesty as an editor - it actually tells you when your writing sucks and why, keeping multiple writing principles in mind even with tons of context.