> ## Documentation Index
> Fetch the complete documentation index at: https://cndoc-langchain.site/llms.txt
> Use this file to discover all available pages before exploring further.

# 安装 LangChain

要安装 LangChain 包：

<CodeGroup>
  ```bash npm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  npm install langchain @langchain/core
  # 需要 Node.js 20+
  ```

  ```bash pnpm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  pnpm add langchain @langchain/core
  # 需要 Node.js 20+
  ```

  ```bash yarn theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  yarn add langchain @langchain/core
  # 需要 Node.js 20+
  ```

  ```bash bun theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  bun add langchain @langchain/core
  # 需要 Bun v1.0.0+
  ```
</CodeGroup>

LangChain 提供了与数百个大语言模型和数千个其他系统的集成。这些集成位于独立的提供者包中。

<CodeGroup>
  ```bash npm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  # 安装 OpenAI 集成
  npm install @langchain/openai
  # 安装 Anthropic 集成
  npm install @langchain/anthropic
  ```

  ```bash pnpm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  # 安装 OpenAI 集成
  pnpm install @langchain/openai
  # 安装 Anthropic 集成
  pnpm install @langchain/anthropic
  ```

  ```bash yarn theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  # 安装 OpenAI 集成
  yarn add @langchain/openai
  # 安装 Anthropic 集成
  yarn add @langchain/anthropic
  ```

  ```bash bun theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  # 安装 OpenAI 集成
  bun add @langchain/openai
  # 安装 Anthropic 集成
  bun add @langchain/anthropic
  ```
</CodeGroup>

<Tip>
  请参阅[集成选项卡](/oss/javascript/integrations/providers/overview)以获取可用集成的完整列表。
</Tip>

现在您已经安装了 LangChain，可以按照[快速入门指南](/oss/javascript/langchain/quickstart)开始使用。

***

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