Chainlit

Chainlit is an open-source Python framework designed to simplify the creation of interactive user interfaces for Large Language Model (LLM) applications. It enables developers to build ChatGPT-like UIs with minimal frontend code, offering features such as chat lifecycle hooks, UI actions, real-time message streaming, and integrations with popular LLM libraries like LangChain and LlamaIndex. The library is actively maintained with frequent releases, currently at version 2.11.0.