alt Hacker NewsWhy use A2UI instead of Streaming MDX?
It seems models are really good at outputing MDX, it's Markdown + JSX after all. You just tell model which Components exist (e.g. Column, Row, Card, Form), show it some examples and it does really good job, even smaller/older models.
OpenAI's new GPT-6 Intelligent UI uses streaming MDX with custom inline language for React style hooks.
I think two of the big things I'm seeing here are:
1) A2UI is purely JSON, while MDX embedding JSX creates some security issues.
2) A2UI is a protocol that's implemented natively for the platform, while MDX is ultimately bound to some JS runtime.