langchain-core

langchain-ai/langchain

Core Python package in the LangChain ecosystemready

langchain-core is the core package that provides LangChain's common abstractions and fundamental execution components, serving as the foundation for developing LLM applications and agents. Since both developers using LangChain itself and those maintaining higher-level packages and integration libraries depend on this package, its releases directly impact API compatibility and overall ecosystem stability.

langchainlangchain-corepythonllmagentsframework

Choose version

1.6.45d ago

langchain-core==1.6.4

Original

Key point

The langchain-core 1.6.4 release deprecates the chat message history API and updates key dependency versions.

Details

Key Changes

Deprecation: The chat message history API has been deprecated. It is scheduled for removal in future versions, so alternative features should be considered.

Dependency Updates

anyio: Version updated from 4.12.0 to 4.14.2.
soupsieve: Version updated from 2.8.4 to 2.9.

langchain-core releases | AI Briefing