agent-html-kit Matches Markdown Token Costs

The compelling idea is not that HTML replaces Markdown, but that reusable rendering primitives make rich agent output economically viable.

• –The kit reduced a weekly report from 7,204 freeform HTML tokens to 726, versus 883 for Markdown.
• –Architecture diagrams and drag-and-drop boards gained interactivity without paying freeform HTML’s large generation overhead.
• –A second agent implemented plans successfully across all formats, though freeform HTML consumed substantially more context and cost.
• –The approach works best for recurring document types; unsupported layouts still incur the full cost of custom HTML.
• –The benchmark is directional, using one model, three runs per cell, and a deliberately polished freeform HTML baseline.