The open standard for Generative UI
C1 by Thesys is a Generative UI API that augments LLMs to respond with interactive UI like charts, forms, cards, and more in real-time, instead of plain text. It integrates seamlessly with any LLM, framework, or MCP in just 2 lines of code. Ship rich, interactive AI apps 10x faster with 80% less UI overhead.
OpenUI's API-first architecture allows developers to integrate generative UI responses into any application. The platform supports multiple LLM providers (OpenAI, Anthropic, Google) and integrates with tools like n8n, enabling flexible deployment.
OpenUI offers tiered plans with included API calls (3K free, 25K at $49/mo, 500K at $499/mo) and transparent LLM token pricing with no markup. Users pay only for what they use and can optimize costs by selecting free models or bringing their own LLM keys.
OpenUI's Reports API enables AI apps to generate slides and reports as artifacts. Users get 100 pages free monthly, then $0.01 per page operation, allowing cost-effective automated document generation without separate reporting tools.
OpenUI's C1 Generative UI API enables AI apps to generate dynamic dashboards, forms, charts, slides, and reports. Users can render structured, visual responses that go beyond text, making data more actionable and user-friendly.
OpenUI provides pre-built generative UI components (dashboards, forms, charts, slides, reports) that AI can directly generate, eliminating manual component development and allowing teams to ship AI features faster.