LangChain Core 1.4.6 adds tracing metadata and fixes tool call streaming
New version tracks package versions in traces and normalizes OpenAI tool calls.
Deep Dive
LangChain released langchain-core v1.4.6, adding package version tracking to tracing metadata, fixing normalization of v1 streamed tool calls for OpenAI, and bumping mypy to 2.1 with unified type-check config across the monorepo.
Key Points
- Adds package version tracking to tracing metadata for better debugging (PR #35295)
- Fixes normalization of v1 streamed tool calls for OpenAI integration (PR #35983)
- Bumps mypy to 2.1 and unifies type-check config across the monorepo (PR #36470)
Why It Matters
Minor release that improves observability and fixes streaming tool calls for LangChain-based agent applications.