CopilotKit

CopilotKit is an open-source framework for embedding AI copilots directly into your own application. Rather than bolting a separate chat widget onto a product, it provides a set of React components and hooks that let any agent framework or model drive an in-app experience — chat, generative UI, an interactive canvas, shared application state, and human-in-the-loop workflows. The goal is to let a developer turn their existing app into an AI-native one without rebuilding it from scratch. What makes CopilotKit distinctive is its focus on the application layer. The components it ships — chat UI, backend tool rendering, generative UI, shared state, human-in-the-loop approval, and self-learning — are the building blocks teams repeatedly rebuild when adding an AI assistant to a product. CopilotKit standardizes them and connects them to whichever agent backend you already use, so the copilot can actually take actions inside your app rather than just talk about them. Shared state is especially powerful: the copilot can read and modify the application's state as it works. The framework is model- and agent-agnostic, so it composes with popular agent runtimes rather than competing with them. It has attracted a large developer community (tens of thousands of GitHub stars) and is used by teams that want to ship production copilots with less bespoke UI engineering. For organizations building AI features into customer-facing products, it removes a large amount of repetitive glue code. CopilotKit is aimed at product and engineering teams who want to embed a capable, in-app AI copilot — one that can render UI, share state, and act within the application — built on top of whatever models and agent frameworks they already trust.