Get a decent-looking one-page site for a product or event up and running in an afternoon, with code you own.
Generate UI components from text descriptions.
v0 outputs React with Tailwind and shadcn/ui, so you get real components you can paste into a Next.js project and keep editing by hand. It's good at the standard landing page pieces (hero, feature grid, pricing table, FAQ) and you can ask for changes one section at a time. The result looks like something a designer touched, not a template.
Prompt-to-fullstack app in seconds.
Bolt builds and hosts the whole site from one prompt, including a contact form that actually does something. That's handy if you don't have a project set up yet. The code is harder to take over later, and it tends to redo parts of the page you were happy with.