ProviderStrategy

This release introduces several new features including gateway metadata extraction, OpenAI 3.0 SDK support, and explicit prompt caching. It also includes numerous bug fixes for streaming, tool calls, and error handling.

This release fixes an issue in `ProviderStrategy` regarding tool strictness for OpenAI models and updates several dependencies.

This patch release for langchain-openai primarily focuses on bug fixes related to response handling, tool strictness, and dependency updates for langsmith and vcrpy.

This release includes numerous performance improvements, dependency bumps, and feature additions like content-block-centric streaming (v2) and integration of stream_events(version='v3'). Several bug fixes address token counting, model recognition, and middleware configuration.

This release introduces support for OpenRouter and automatic server-side compaction in OpenAI, alongside several dependency updates and bug fixes related to model initialization and detector output.

This release introduces a strict mode for structured outputs in ProviderStrategy and adds an extras field to BaseTool, alongside fixes for multithreading race conditions and HuggingFace model initialization.

This release fixes parameter handling for temperature and tools in ChatOpenAI and introduces a strict flag for structured outputs.