Anthropic switched to HTML artifacts for internal planning, code reviews,...
https://www.fastbookmarks.win/anthropic-switched-to-html-artifacts-from-markdown-for-internal-planning-code
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