📄 中文摘要
LangChain.js 是一个用于构建大语言模型（LLM）驱动应用程序的框架。它提供了链、代理、检索和记忆等抽象，使得构建复杂的 AI 工作流变得简单。用户可以通过简单的安装命令快速开始使用该框架，并利用其功能构建简单的 AI 链。该框架的设计旨在降低开发门槛，帮助开发者快速实现 AI 应用的原型和功能。通过 LangChain.js，开发者能够高效地整合不同的 AI 组件，提升应用的智能化水平。
LangChain.js 提供免费 API — 如何在 JavaScript 中构建 AI 链
📄 English Summary
LangChain.js Has a Free API — Here's How to Build AI Chains in JavaScript
LangChain.js is a framework designed for building applications powered by large language models (LLMs). It offers abstractions for chains, agents, retrieval, and memory, simplifying the process of creating complex AI workflows. Users can quickly get started with a simple installation command and leverage its features to build straightforward AI chains. The framework is designed to lower the barrier to development, enabling developers to rapidly prototype and implement functionalities for AI applications. With LangChain.js, developers can efficiently integrate various AI components, enhancing the intelligence of their applications.