Anthropic switched to HTML artifacts because they cut output costs by $0.08 per...

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

Anthropic switched to HTML artifacts because they cut output costs by $0.08 per use and handle 4.4 million views smoothly. HTML makes internal planning, code reviews, design systems, and reports clearer and easier to navigate