v0 by Vercel

v0 is Vercel's AI tool for generating web UI from plain-language prompts. You describe a component or full page, like a pricing table or a dashboard layout, and it returns working React code styled with Tailwind CSS and shadcn/ui components. It runs as a chat-style interface where you can iterate on the output, asking for changes to layout, styling, or behavior, and it regenerates the code accordingly. Generated projects can be previewed live, copied into an existing codebase, or deployed directly to Vercel.

It's aimed at frontend developers, designers who code, and product teams who want to skip the blank-file stage of building an interface. Rather than writing boilerplate for common patterns (forms, tables, navigation, cards), you get a working starting point in seconds and then refine it by hand or with further prompts. Because it targets the React/Tailwind/shadcn stack specifically, the output tends to be closer to what a team actually ships than more generic AI code generators, and it integrates cleanly with Next.js projects.

What sets v0 apart from general-purpose coding assistants is its narrow focus on UI generation with an instant visual preview, plus its tight integration with Vercel's deployment pipeline. It has also expanded beyond static component generation into building full interactive apps and connecting to APIs and databases, positioning it as a fast prototyping tool that can grow into a more complete app builder rather than staying limited to one-off snippets.