---
id: langchain-core
version: "1.5.4"
license: MIT
license_treatment: permissive
maintenance: active
---

# langchain-core — Building applications with LLMs through composability

License: permissive · Maintenance: active · Popularity: top 1,000 on PyPI

## Install

pip install langchain-core
uv add langchain-core
poetry add langchain-core

## Description

# 🦜🍎️ LangChain Core

[![PyPI - Version](https://img.shields.io/pypi/v/langchain-core?label=%20)](https://pypi.org/project/langchain-core/#history)
[![PyPI - License](https://img.shields.io/pypi/l/langchain-core)](https://opensource.org/licenses/MIT)
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[![Twitter](https://img.shields.io/twitter/url/https/twitter.com/langchain_oss.svg?style=social&label=Follow%20%40LangChain)](https://x.com/langchain_oss)

Looking for the JS/TS version? Check out [LangChain.js](https://github.com/langchain-ai/langchainjs).

To help you ship LangChain apps to production faster, check out [LangSmith](https://www.langchain.com/langsmith).
[LangSmith](https://www.langchain.com/langsmith) is a unified developer platform for building, testing, and monitoring LLM applications.

## Quick Install

```bash
uv add langchain-core
```

## 🤔 What is this?

LangChain Core contains the base abstractions that power the LangChain ecosystem.

These abstractions are designed to be as modular and simple as possible.

The benefit of having these abstractions is that any provider can implement the required...

## AI interpretation — verify before relying

LangChain Core provides the foundational abstractions and interfaces for building LLM applications, enabling modular composition of language model components across the LangChain ecosystem.

Verdict: Langchain-core is a production-stable, actively maintained foundation library for LLM application development. Zero known vulnerabilities, permissive MIT licensing, and low install friction make it a safe choice for teams building on the LangChain ecosystem.

[View on SkillFed](https://skillfed.io/packages/langchain-core) · [View on PyPI](https://pypi.org/project/langchain-core/)