Anthropic switched to HTML artifacts because they make internal planning, code...

https://www.mikegingerich.com/blog/anthropic-adopts-html-over-markdown-for-workflows/

Anthropic switched to HTML artifacts because they make internal planning, code reviews, design systems, and reports clearer and easier to navigate. With 4.4 million views across teams, HTML cuts loading times by 5 times compared to Markdown