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

1.6.618h ago

langchain-core langchain-core==1.6.6

Original

Key point

Release of langchain-core 1.6.6, including support for Claude Sonnet 5.5 compatibility and fixes to documentation examples.

Details

Anthropic Integration: Updated to support compatibility with the Claude Sonnet 5.5 model.
Documentation Improvements: Fixed docstring examples that could not be copied and run, ensuring they now work correctly.

langchain-core releases | AI Briefing