GH Repository · langchain-ai
langchain
The agent engineering platform.
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agent-frameworkPythonopen-sourcelanggraphaiagentstypescriptdeepagentsmultiagentanthropicchatgptlangchainpydanticopenaiai-agentsllmpythonframeworkraggenerative-aigeminienterprise
LangChain is an open-source agent engineering platform for building applications on top of large language models, available in Python and TypeScript. It positions itself as a framework for agents, with related projects in its ecosystem including LangGraph and DeepAgents.
Reach for it when you want a mature, MIT-licensed framework for assembling LLM-powered agents and RAG pipelines rather than building orchestration from scratch.
Use it to
- Build multi-agent LLM applications
- Assemble RAG pipelines over your data
- Integrate providers like OpenAI, Anthropic, and Gemini
- Prototype chat and agent workflows in Python or TypeScript
- Adopt agent engineering practices in enterprise settings
For Developers building LLM agents and AI applications
- Role
- agent-framework
- Language
- Python
- Licence
- MIT
- Forks
- 24,458
- Open issues
- 401
- Last push
- 2026-09-15
- Latest release
- langchain==0.1.20 · 2024-05-10
topicsagent-frameworkllmpythontypescriptragmultiagent