[Release] langchain-ai/langchain langchain-openai==1.4.2: langchain-openai==1.4.2

langchain-openai version 1.4.2 is a patch release that addresses several critical issues with OpenAI integration. Key fixes include proper handling of context window exceeded errors, filtering of langchain-generated content block IDs, preservation of response text options, and redaction of MCP authorization headers. The release also includes dependency updates and refreshed model profile data.

Key Points

• •Handle `ContextWindowExceededError` gracefully to prevent crashes when token limits are exceeded
• •Filter langchain-generated content block IDs to avoid conflicts and ensure clean API responses
• •Preserve Response `text` options to maintain backward compatibility with existing implementations
• •Redact MCP `authorization` headers for improved security and preventing credential leaks
• •Bump minor and patch dependencies across 3 directories with 7 updates for improved stability
• •Refresh model profile data to ensure accurate model capabilities and pricing information
• •Maintain compatibility with OpenAI API changes and best practices

Workflow Diagram

Concepts