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Last update time : 2026-02-13 20:01:44

Sunpeak is an open-source framework for developing and testing AI chat applications

Sunpeak is a comprehensive framework designed to facilitate the development, testing, and deployment of ChatGPT Apps and MCP Apps. These applications are specifically designed to run within AI chat clients, such as ChatGPT and Claude, providing users with interactive and immersive experiences. The framework offers a range of tools and features to streamline the development process, including a local Apps SDK runtime simulator, typed React hooks, and pre-built UI components.

One of the key benefits of Sunpeak is its ability to support the development of deterministic, automated tests for LLM-driven interactive UIs and tool invocations. This is made possible through the integration of Vitest and Playwright, allowing developers to write and run tests without the need for a paid ChatGPT account. Additionally, the framework includes an MCP dev server with hot reload, enabling developers to quickly test and iterate on their applications. The inclusion of CLI tooling further enhances the development experience, providing a seamless and efficient way to manage and deploy applications.

The open-source nature of Sunpeak makes it an attractive option for developers looking to build and deploy AI chat applications. By providing a comprehensive set of tools and features, Sunpeak simplifies the development process, allowing developers to focus on creating innovative and engaging user experiences. With its robust feature set and ease of use, Sunpeak is poised to become a leading framework for building and deploying AI chat applications.

Pricing : Open Source

Web Address : sunpeak

Tags : Sunpeak open-source framework ChatGPT Apps MCP Apps AI chat clients React hooks UI components automated testing Vitest Playwright CLI tooling