V0 is a generative user interface system developed by Vercel Labs, powered by AI. It creates React code compatible with Shadcn UI and Tailwind CSS based on text prompts. Users can choose from three AI-generated interface options, customize them, and copy-paste the code for their projects. V0 was trained on a mix of custom code, open-source, and synthetic datasets, and user-generated prompts may be used for further improvement. The tool is currently in a Private Alpha phase, with plans to expand support for different UI libraries and design systems. User data can be deleted upon request, and commercial use is subject to Vercel's terms.