Langchain Core

<div align="center">
<a href="https://www.langchain.com/">
<picture>
<source media="(prefers-color-scheme: light)" srcset=".github/images/logo-light.svg">
<source media="(prefers-color-scheme: dark)" srcset=".github/images/logo-dark.svg">

</picture>
</a>
</div>

<div align="center">
<h3>The agent engineering platform.</h3>
</div>

<div align="center">
<a href="https://opensource.org/licenses/MIT" target="_blank"></a>
<a href="https://pypistats.org/packages/langchain" target="_blank"></a>
<a href="https://pypi.org/project/langchain/#history" target="_blank"></a>
<a href="https://vscode.dev/redirect?url=vscode://ms-vscode-remote.remote-containers/cloneInVolume?url=https://github.com/langchain-ai/langchain" target="_blank"></a>
<a href="https://codespaces.new/langchain-ai/langchain" target="_blank"></a>
<a href="https://codspeed.io/langchain-ai/langchain" target="_blank"></a>
<a href="https://x.com/langchain" target="_blank"></a>
</div>

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.

pip install langchain

If you're looking for more advanced customization or agent orchestration, check out LangGraph, our framework for building controllable agent workflows.

---

Documentation:

docs.langchain.com – Comprehensive documentation, including conceptual overviews and guides

reference.langchain.com/python – API reference docs for LangChain packages

Chat LangChain – Chat with the LangChain documentation and get answers to your questions

Discussions: Visit the LangChain Forum to connect with the community and share all of your technical questions, ideas, and feedback.

> [!NOTE]
> Looking for the JS/TS library? Check out [LangChain.js](https://githu

... [truncated — view full README on GitHub]