Anthropic switched to HTML artifacts because they load 5 times faster than...

https://www.slideserve.com/aaron_ward92/what-s-a-practical-html-artifact-layout-for-a-code-review-with-3-findings

Anthropic switched to HTML artifacts because they load 5 times faster than Markdown, making internal planning, code reviews, design systems, and reports much snappier. This speed boost means teams spend less time waiting and more time building