What do you want to build?

Quickly design and share full-stack prototypes. Free and open-source.

Flexible LLM support

Classy supports most AI providers, including OpenAI, Anthropic, and more. Easily add custom integrations and API keys.

Beautiful UIs

Render interactive React apps with popular libraries and component libraries. Customize Classy to fit your needs.

Share and collaborate

Share your projects with one click on Classy. Download code and export to your own projects.

Open-source AI prototyping and development

Classy is the first open-source AI prototyping and development platform. Develop new applications, UI components, and more using the latest generative AI models.

You can use our hosted service which offers free and paid tiers. For complete flexibility and privacy, you can also run it locally or deploy to your own infrastructure. Contributions and improvements are welcome.

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