langchain-ai/langchain
The agent engineering platform.
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README & documentation
Source previewRead the project’s overview, installation instructions and usage examples. The original README is the source of truth.
The agent engineering platform. LangChain is a framework for building agents and LLM-powered applications. It helps you chain together interoperable components and third-party integrations to simplify AI application development — all while future-proofing decisions as the underlying technology evolves. If you're looking for more advanced customization or agent orchestration, check out LangGraph, our framework for building controllable agent workflows. For an equivalent JS/TS library, check out LangChain.js.…
Read the full README ↗ · Preview checked 2026-10-29T05:26:48.033Z
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What this repository does
The agent engineering platform.
Repository facts
- Owner
- langchain-ai
- Primary language
- Python
- Stars
- 148,808
- Forks
- 25,011
- Open issues + pull requests
- 713
- License
- MIT
- Archived
- No
- Default branch
- master
- Created
- 2022-10-17T02:58:36.000Z
- Last push
- 2026-11-01T09:10:04.000Z
Topics and intended use
Owner-supplied topics: agents, ai, ai-agents, anthropic, chatgpt, deepagents, enterprise, framework, gemini, generative-ai, langchain, langgraph, llm, multiagent, open-source, openai, pydantic, python, rag, typescript
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Source and freshness
Source: GitHub. Metadata observed 2026-11-01T12:17:40.351Z. Daily imports are snapshots, not real-time monitoring.
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