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

https://johnathankvdj950.wpsuo.com/markdown-vs-html-for-short-conversations-why-does-markdown-still-win

Anthropic switched to HTML artifacts for internal planning, code reviews, design systems, and reports because it cuts costs and boosts performance. They saw output costs drop to just $0.08 per use, and pages now load 5 times faster than with Markdown