LangChain

agent-frameworkStable

The agent engineering platform.

About LangChain

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. model = init_chat_model("openai:gpt-5.4") result = model.invoke("Hello, world!") ``` If you're looking for more advanced customization or agent orchestration, check out LangGraph, our framework for building controllable agent workflows.

Read the full README on GitHub →

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LangChain growth signals this week

• Gained 561 stars in the last 7 days
• 112x the median weekly star growth of its category

Growth score: 41/100 week of 2026-07-20

Signal history

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Frequently asked questions

Is LangChain still maintained?

Yes — actively maintained. The last push was on 2026-07-19, with 3,698 contributors.

Is LangChain growing?

It is stable this week, with a growth score of 41/100. See the weekly history above.

What are the best LangChain alternatives?

Closest by category and size in our data: microsoft/markitdown, MetaGPT, io.github.ruvnet/claude-flow — full list with live signals above.

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Tracked since 2026-06-10 · data as of 2026-07-19 · 437 open issues · 1,303 releases