[Release] langchain-ai/langchain langchain-anthropic==1.4.0: langchain-anthropic==1.4.0

langchain-anthropic version 1.4.0 introduces prompt caching middleware for system messages and tool definitions, delegates cache_control parameters to Anthropic's top-level configuration, and includes dependency updates. This release enhances caching efficiency for Anthropic integrations in LangChain by providing explicit control over cached content and streamlining parameter handling.

Key Points

• •New AnthropicPromptCachingMiddleware enables explicit caching of system messages and tool definitions to reduce API costs
• •cache_control kwarg is now delegated to Anthropic's top-level parameters for cleaner API integration
• •Model profile data refreshed to ensure compatibility with latest Anthropic models
• •Dependency upgrade: orjson bumped from 3.11.5 to 3.11.6 for improved performance and security
• •Prompt caching middleware allows developers to optimize token usage by caching frequently-used system prompts and tool schemas
• •Simplified parameter passing reduces boilerplate code when configuring Anthropic cache settings

Workflow Diagram

Concepts