OpenUI

lastmod 2026-03-30created 2026-03-301 edits

An open standard framework for generative UI

About

• A full-stack framework for LLM-based UI generation: includes a UI generation language, runtime, components, and even a chat interface
• OpenUI Lang: a language for UI generation; up to 67% fewer tokens and up to 3x faster than Vercel's json-render
• React runtime: renders progressively token by token and provides a base component set including charts, forms, and tables
• Library-based prompt generation: controls the model so it outputs only allowed components
• App scaffolding and automatic system prompt generation with npx @openuidev/cli
• Playground provided: test in real time at openui.com/playground
• Agent Skill integration: supports generating and debugging OpenUI Lang-based apps in Claude Code, Copilot, etc.

See also

• UI
• GAN

Favorite site

• Github - thesysdev/openui
• OpenUI - An open standard framework for generative UI | GeekNews