Openui

OpenUI is an open standard and framework for generative interfaces, where an AI agent streams live charts, forms, cards, tables and dashboards rather than plain text. It is built on OpenUI Lang, a streaming first language that the vendor says uses up to 67 percent fewer tokens than JSON formats and renders faster. First party runtimes cover React, Vue, Svelte and Angular, and one response can also render in React Native, email and script tags. The model only composes components the developer supplies, so it never runs arbitrary code, and teams can use their own design system or libraries such as shadcn/ui, Material UI, Mantine, Chakra UI or daisyUI. Interfaces can query tools and MCP servers at runtime so data stays current, and the generated UI responds as users click, choose and type. It works with providers including OpenAI, Anthropic, Gemini, xAI, Mistral and DeepSeek, and integrates with the Vercel AI SDK, LangChain, LangGraph, Cloudflare and Convex. It installs through a command line scaffolder. The framework is open source and free to self host, with no usage limits from the vendor. Managed services sit alongside it. OpenUI Gateway repairs invalid model output and keeps requests moving through provider outages. Its Free plan includes 3K API calls per month with the user's own LLM key. Build is $49 per month for 25K calls, Grow is $499 per month for 500K calls, with additional calls at $0.002 and $0.001 respectively, and Scale is custom. LLM tokens are billed separately at provider rates, and annual billing saves up to 20 percent. OpenUI Observability is free during early access.