Anthropic switched to HTML artifacts for planning, code reviews, design...

https://alexisqoem867.trexgame.net/how-do-i-keep-html-artifacts-readable-for-people-who-hate-front-end-stuff

Anthropic switched to HTML artifacts for planning, code reviews, design systems, and reports because HTML cuts rendering latency by 5x compared to Markdown. This means teams see updates instantly, improving collaboration and speeding decisions