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

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

Anthropic switched to HTML artifacts for internal planning, code reviews, design systems, and reports because it slashes output costs to just $0.08 per document. HTML also loads 5 times faster than Markdown, making collaboration smoother for their team