Anthropic switched to HTML artifacts because they cut rendering 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 rendering latency by 5x compared to Markdown, making reviews and planning way faster. With 4.4 million views across teams, the clear structure helps everyone find info quickly