AI agents got smarter. Their interfaces didn't. Ask an AI to analyze your sales pipeline and you get three paragraphs. You should get a chart.
We've spent the last year building Generative UI used by 10,000+ developers, and the biggest lesson was that JSON-based approaches break at scale. LLMs keep producing invalid output, rendering is slow, and custom design systems are a pain to wire up.
So we built OpenUI Lang, a rendering spec inspired by code rather than data formats. LLMs generate it reliably the way they generate well-formed functions. The benchmarks: up to 67% fewer tokens, 3x faster rendering, streaming-native, and safe by default (no arbitrary code execution).
Today we're open sourcing it. Model-agnostic, framework-agnostic, design-system agnostic. Show us your support by starring or contributing to our repo - https://github.com/thesysdev/openui
We've been launching stuff on Product Hunt since last year, and like everyone else, I hit up old friends asking for support. You know how it goes.
Anyway, I met up with a few of them recently and they started thanking me. I'm sitting there thinking "aw that's sweet, they liked our product!"
But nope. They were thanking me for introducing them to Product Hunt itself. Apparently they've been addicted to it ever since, checking it daily for new AI tools.
