[Release] langchain-ai/langchain langchain-anthropic==1.5.6: langchain-anthropic==1.5.6

langchain-anthropic version 1.5.6 was released with three key fixes: normalization of `tool_search_tool_result` blocks, correction of model profile data for Fable 5, Sonnet 5, and Opus 4.1 models, and general release updates. This patch release addresses tool handling and model configuration issues in the Anthropic integration for LangChain.

Key Points

• •Released langchain-anthropic==1.5.6 as a patch update from 1.5.5
• •Fixed normalization of `tool_search_tool_result` blocks to ensure proper tool result handling
• •Corrected model profile data for three Anthropic models: Fable 5, Sonnet 5, and Opus 4.1
• •Patch focuses on tool integration and model configuration accuracy
• •Changes improve compatibility and reliability of Anthropic model interactions in LangChain

Concepts