langchain==1.2.10
A silent patch just fixed a major issue for thousands of AI developers...
Deep Dive
LangChain has released version 1.2.10, a minor but critical patch. The update primarily fixes a bug in token counting for partial message sequences, which could have led to inaccurate billing and context window management for developers. The release also includes 51 dependency updates across the project and renames an internal constant from `_SUPPORTED_PROVIDERS` to `_BUILTIN_PROVIDERS`. This is a maintenance release following version 1.2.9.
Why It Matters
Accurate token counting is essential for cost control and preventing context overflow in production AI applications.