Anthropic switched to HTML artifacts from Markdown to speed up internal work...

https://messiahssplendidjournals.lowescouponn.com/what-are-live-artifacts-and-what-changed-in-april-2026

Anthropic switched to HTML artifacts from Markdown to speed up internal work like planning, code reviews, and reports. HTML cuts output costs to just $0.08 per file and loads content 5x faster, which boosts productivity