LangChain 中文文档

外观

要安装 LangChain 包：

bash
pip install -U langchain
# Requires Python 3.10+
bash
uv add langchain
# Requires Python 3.10+
bash
npm install langchain @langchain/core
# Requires Node.js 22+
bash
pnpm add langchain @langchain/core
# Requires Node.js 22+
bash
yarn add langchain @langchain/core
# Requires Node.js 22+
bash
bun add langchain @langchain/core
# Requires Bun v1.0.0+

LangChain 提供对数百个 LLM 和数千个其他集成的集成。这些集成位于独立的提供商包中。

bash
# Installing the OpenAI integration
pip install -U langchain-openai

# Installing the Anthropic integration
pip install -U langchain-anthropic
bash
# Installing the OpenAI integration
uv add langchain-openai

# Installing the Anthropic integration
uv add langchain-anthropic
bash
# Installing the OpenAI integration
npm install @langchain/openai
# Installing the Anthropic integration
npm install @langchain/anthropic
bash
# Installing the OpenAI integration
pnpm install @langchain/openai
# Installing the Anthropic integration
pnpm install @langchain/anthropic
bash
# Installing the OpenAI integration
yarn add @langchain/openai
# Installing the Anthropic integration
yarn add @langchain/anthropic
bash
# Installing the OpenAI integration
bun add @langchain/openai
# Installing the Anthropic integration
bun add @langchain/anthropic

TIP

查看集成标签页以获取可用集成的完整列表。

现在你已经安装好了 LangChain，可以按照快速入门指南开始使用。

TIP

设置 LangSmith 追踪，以调试你的第一个 LangChain 应用程序。按照追踪快速入门开始使用。我们还建议你设置 LangSmith Engine，它可以监控你的追踪、检测问题并提出修复方案。