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langchain-ai/langchain

★ 149,362PythonMIT98

The agent engineering platform.

What it is

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.

When to use it

Reach for langchain when you want an LLM to plan, call tools, browse, or coordinate with other agents instead of answering a single prompt — it's written in Python and fits stacks tagged ai-agents, ai, anthropic, chatgpt.

Category
AI Agents
Also in
LLM & Inference
Stars
149,362
Forks
25,108
Last push
today
Created
2022-10-17
Open issues
730
Website
docs.langchain.com/langchain
#ai-agents#ai#anthropic#chatgpt#deepagents#enterprise#framework#gemini#generative-ai#langchain#langgraph#llm#multiagent#openai

Quick start

$ git clone https://github.com/langchain-ai/langchain.git

Hand it to your AI

Read https://ideas.asveas.com/r/langchain-ai/langchain.md and help me add langchain-ai/langchain to my project. Explain the setup steps for my stack and show the minimal code to get it working.
AI AgentsMarkdown .mdOpen on GitHub ↵

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FAQ

What is langchain?

langchain-ai/langchain is an agent framework on GitHub: The agent engineering platform. LangChain is a framework for building agents and LLM-powered applications.

When should I use langchain?

Reach for langchain when you want an LLM to plan, call tools, browse, or coordinate with other agents instead of answering a single prompt — it's written in Python and fits stacks tagged ai-agents, ai, anthropic, chatgpt.

What are the best alternatives to langchain?

Popular alternatives in AI Agents: Significant-Gravitas/AutoGPT (188k★), browser-use/browser-use (121k★), heygen-com/hyperframes (82.8k★), crewAIInc/crewAI (60.8k★), langchain-ai/langgraph (44.8k★).

Is langchain actively maintained?

langchain-ai/langchain looks very actively maintained: the last push was today (2026-11-11), with 149,362 stars and 730 open issues.

What license does langchain use?

langchain-ai/langchain is published under the MIT license. Check the repository's LICENSE file before commercial use.