[Release] langchain-ai/langchain langchain-openrouter==0.2.1: langchain-openrouter==0.2.1

langchain-openrouter version 0.2.1 was released with a critical fix for passing attribution headers through httpx default_headers instead of the previous method. The release includes updated model profile data and a dependency bump for the requests library from 2.32.5 to 2.33.0. This patch addresses header handling in the OpenRouter integration for LangChain.

Key Points

• •Fixed attribution header passing mechanism using httpx `default_headers` parameter
• •Updated model profile data to reflect current OpenRouter model availability
• •Upgraded requests library dependency from 2.32.5 to 2.33.0 for improved stability
• •Patch release (0.2.1) indicates a bug fix rather than new features
• •OpenRouter integration now properly handles HTTP headers for API attribution
• •Dependency management ensures compatibility with latest request handling libraries

Workflow Diagram

Concepts