Anthropic switched to HTML artifacts because they cut review latency by 5x...

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 cut review latency by 5x compared to Markdown. With 4.4 million views a month, faster feedback means teams catch issues sooner and ship features quicker