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// Build agent apps

langchainjs[email protected]

The agent engineering platform

Open source Maintained For developers

Official site ↗ GitHub ↗

IN ONE PARAGRAPH

langchainjs is the agent engineering platform.

Good for: Developers and teams who want to build agent apps.

01How to start

  1. 1Read the official quick-start (link above).
  2. 2Install from the official package registry: npm install langchain
  3. 3Try it on a small example before wiring it into a project.

npm: langchain

02Alternatives & comparison

Compare side by side →
langchain The agent engineering platform. ★ 148k autogen A programming framework for agentic AI ★ 62k crewAI Framework for orchestrating role-playing, autonomous AI agents. By fostering collaborative intelligence, CrewAI empowers agents to work together seamlessly, tackling complex tasks. ★ 60k llama_index LlamaIndex is the document processing platform for AI ★ 53k langgraph Build resilient agents. ★ 44k
Versions, why it is listed, for AI to read

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Data updated: AI software & hot ranks · Software profiles & needs · Official software downloads(UTC+8)