Builder.io connects design and code with AI. Visual Copilot converts Figma designs into clean, framework-aware code (React, Vue, Svelte, Angular and more) using design tokens and existing components; Fusion goes further, letting teams build full apps and UIs visually on top of real repositories with git-based workflows; and Publish provides a headless, 'agentic' CMS where marketers ship pages, A/B tests and personalization via prompts without engineering tickets.
Where design systems meet AI codegen
Unlike prompt-only app builders, Builder.io grounds generation in a team's actual design system and production code, mapping Figma components to code components so output matches existing conventions. The platform exposes content and codegen through APIs and SDKs for every major framework, plus MCP connectors for agent extensibility. Customers include enterprise brands like J.Crew, Everlane and Harry's.
Company background
Founded by CEO Steve Sewell, Builder.io has raised over $60M, including a $14M Series A led by Greylock (2021) and a $20M Series B led by M12, Microsoft's venture fund (April 2024). Its open-source Mitosis project compiles components to multiple frameworks.