Anthropic switched to HTML artifacts for planning, code reviews, design...
https://touch-wiki.win/index.php/Is_Anthropic_Really_Debating_Whether_to_Make_HTML_the_Default_in_Claude_Code%3F
Anthropic switched to HTML artifacts for planning, code reviews, design systems, and reports because it cuts rendering latency by 5x compared to Markdown. This speed boost helps teams move faster and collaborate without delays. Plus, with 4