[Release] langchain-ai/langchain langchain==1.3.13: langchain==1.3.13

LangChain v1.3.13 release introduces support for Meta models through a new `meta` extra package, adds explicit prompt caching for OpenAI models to improve performance and reduce costs, and includes dependency updates. This minor release enhances integration capabilities with Meta's language models and optimizes OpenAI API usage patterns.

Key Points

• •New `meta` extra enables langchain-meta package integration for Meta model support
• •init_chat_model() function now supports Meta models as a chat model option
• •OpenAI integration adds explicit prompt caching feature for improved performance
• •Prompt caching reduces redundant API calls and associated costs for OpenAI models
• •Dependency lockfiles refreshed to maintain security and compatibility
• •Minor version bump (1.3.12 → 1.3.13) indicates backward-compatible changes
• •Meta model support expands LangChain's LLM provider ecosystem
• •Caching mechanism optimizes token usage for repeated prompt patterns

Workflow Diagram

Concepts