The Chat SDK is a free, open-source template for building powerful chatbot applications. It powers incredible applications across the web and is now available as a production-ready template, built on Next.js App Router with the AI SDK at its core. This allows users to use any AI model and provider throughout their application, leveraging strong foundations such as message persistence, authentication, multimodal support, and shareable chats. The Chat SDK differentiates itself with features like generative UI, customizable artifacts, and in-browser code execution, enabling dynamic, interactive interfaces, specialized components tailored to specific use cases, and seamless code execution directly in the browser. With extensive documentation covering everything from project setup to customization instructions, the Chat SDK provides a solid foundation for building incredible chat applications.