OpenUI: open-source generative UI standard uses a streaming language that saves up to 67% tokens vs JSON
tom_doerr · x · 2026-10-25
tomdoerr spotlights OpenUI (thesysdev/openui, 13.7k stars, MIT), a full-stack framework-agnostic generative UI framework positioned as the open standard for generative UI. Its core, OpenUI Lang, is a compact streaming-first language for model-generated structured UI that consumes up to 67% fewer tokens than JSON. It ships first-party runtimes for React, Vue, Svelte and Angular, built-in component libraries (charts, forms, tables, layouts), and ready-to-use chat interfaces. The project notes it has no official cryptocurrency or token.
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