CopilotKit Releases OpenIntelligentUI, an Open-Source Alternative to ChatGPT Intelligent UI

• CopilotKit released OpenIntelligentUI, an open-source (MIT) implementation of ChatGPT's Intelligent UI that converts user queries into explanations, comparisons, or working tools.
• The project achieved 3.6k GitHub stars, 397 forks, and ranked #5 on GitHub Trending and #3 on Trendshift for TypeScript repositories.
• An agent named Jev selects the response format for each turn, routing basic tables to A2UI and complex visualizations like charts, maps, and calculators to Open Generative UI.
• The system uses a Python Deep Agent backend and a Next.js frontend, streaming custom HTML/CSS/JavaScript into isolated iframes via the generateSandboxedUi tool.

Architecture and Functionality

• Three primary modes: Understand (step-by-step mechanisms), Compare (side-by-side trade-offs), and Make a tool (interactive controls like bill splitters or 3D models).
• Visualization routing is deterministic; if a provider fails, the system surfaces the error rather than silently switching to a different model or router.
• Custom UI parameters follow a specific order: initialHeight, placeholderMessages, css, html, jsFunctions, and jsExpressions.

Setup and Requirements

• Requires Node.js 22+, pnpm 9+, Python 3.12+, and uv for local execution.
• Users must provide their own OPENAI_API_KEY for the chat-latest model and TYPESAFE_API_KEY for the Jev agent.
• API keys are stored only in browser memory and are not persisted to storage or included in chat state checkpoints.