晚上好，辛苦一天了，放松一下吧。
LangChain is a development platform built around a large language model, providing three core products, LangChain Framework, LangGraph Workflow Orchestration and LangSmith Monitoring and Evaluation, to help developers build, deploy and optimize AI applications such as intelligent agents, lowering the threshold of development and improving application performance.
CopilotKit is an AI Intelligent Body development framework that helps developers quickly add interactive AI co-pilot functionality to web or mobile apps. It supports a wide range of AI models and protocols, provides flexible solutions from pre-built components to deep customization, eliminates the need to build AI underpinnings from scratch, and has been adopted by many developers and enterprises.