[Release] langchain-ai/langchain langchain-core==1.3.2: langchain-core==1.3.2

LangChain Core v1.3.2 introduces content-block-centric streaming (v2), a new streaming architecture that improves how content blocks are handled during streaming operations. This release builds on v1.3.1 with enhanced streaming capabilities for better performance and developer experience. The update focuses on refining the core streaming mechanisms used throughout the LangChain framework.

Key Points

• •Content-block-centric streaming (v2) replaces previous streaming approach with block-level granularity
• •Improved streaming architecture enables better handling of structured content during real-time operations
• •Enhanced performance for streaming-based LLM interactions and agent responses
• •Backward compatibility maintained from v1.3.1 to v1.3.2
• •Streaming now operates at content block level rather than token or message level
• •Better support for complex content structures in streaming scenarios
• •Core library update that impacts all downstream LangChain packages

Workflow Diagram

Concepts