AI ToolsGuru
Libraries/Python

LangChain

Build context-aware reasoning applications powered by language models.

Python
AI & Machine Learning
MIT
v0.3.7
Open source
Trending
GitHub Docs Website
Stars
94.0K
Forks
15.3K
Downloads
200.0M
Maintainer
LangChain

Installation

Install on any operating system — Windows, macOS, or Linux.

Pick your OS tab below and copy the command for your preferred package manager. We cover language tools (pip, npm, cargo, gem, Maven, NuGet, …) and OS-level managers like winget / choco on Windows, brew on macOS, and apt / dnf / pacman / apk on Linux.

  1. Open a terminal (PowerShell on Windows, Terminal on macOS/Linux).
  2. Make sure the relevant runtime is installed (e.g. Node.js, Python, Rust).
  3. Click the copy icon on a command below, paste, and run.
pip
pip install langchain
pip3
pip3 install langchain
conda
conda install -c conda-forge langchain

Tags

#llm
#rag
#agents

Quick start

After installing, head to the official documentation for a guided quick start. Most projects include a getting-started orexamples section with copy-pasteable code.

Browse the source on GitHub for issues, releases, and contribution guidelines.