HTML Is the New Markdown: How Anthropic's Claude Code Team Reframed AI Output
Markdown won the LLM format war by being simple, portable, and predating agents. But Claude Code's engineering lead just argued the era is ending: agents now produce 200-line plans, code reviews, and reports that are unreadable as plain prose. His proposed default — generate HTML, not Markdown — has been adopted by Simon Willison within hours. We unpack the thesis, the 20-example gallery, the cost math, and the workflows people are already using.