[Release] langchain-ai/langchain langchain-openrouter==0.2.0: langchain-openrouter==0.2.0

langchain-openrouter version 0.2.0 introduces the `app_categories` field for marketplace attribution and updates model profile data across multiple iterations. The release includes dependency bumps for langchain-core (minimum 1.2.21), schema validation improvements, and CI/CD optimizations. Key changes focus on enhancing model profile management, fixing missing ModelProfile fields, and improving the development workflow.

Key Points

• •Added `app_categories` field to OpenRouter integration for better marketplace attribution and categorization
• •Bumped minimum langchain-core dependency to version 1.2.21 for compatibility
• •Implemented schema drift detection with warnings for missing ModelProfile fields
• •Refreshed model profile data multiple times throughout the release cycle to ensure accuracy
• •Updated OpenRouter URL and title references for consistency
• •Optimized CI/CD pipeline by suppressing pytest streaming output and avoiding unnecessary dependency installations
• •Introduced new Makefile target for improved model profile field management
• •Enhanced ModelProfile schema with additional required fields

Workflow Diagram

Concepts