[Release] langchain-ai/langchain langchain==1.3.11: langchain==1.3.11

LangChain v1.3.11 is a patch release that fixes tool handling for OpenAI-compatible models by conditionally setting strict=True only when appropriate in ProviderStrategy. The release includes dependency updates for pydantic-settings, vcrpy, and langsmith, along with improved documentation for summarization prompt contracts.

Key Points

• •Fixed ProviderStrategy to only apply strict=True constraint on tools for OpenAI-compatible models, preventing incompatibility with other providers
• •Upgraded pydantic-settings from 2.12.0 to 2.14.2 for improved configuration management
• •Updated langsmith from 0.8.9 to 0.8.18 for enhanced tracing and monitoring capabilities
• •Bumped vcrpy from 8.1.1 to 8.2.1 for better HTTP request recording in tests
• •Added documentation for summarization prompt contract to clarify expected input/output formats
• •Maintains backward compatibility while fixing provider-specific tool configuration issues

Workflow Diagram

Concepts