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

https://online-wiki.win/index.php/What%E2%80%99s_a_Realistic_Example_of_an_HTML_Artifact_Report_That_Swaps_Only_the_JSON_Block%3F

Anthropic switched to HTML artifacts for internal planning, code reviews, design systems, and reports because HTML cuts rendering latency by 5x compared to Markdown