langchain-anthropic==1.3.3
Summary
LangChain-Anthropic version 1.3.3 is a software release that includes several updates to how the library works with Anthropic's AI models. The updates add support for an "effort=max" parameter (which tells the AI to use maximum computational effort), fix an issue where extra spaces were being left at the end of AI responses, and introduce a new ContextOverflowError (an error that triggers when an AI receives too much text to process at once).
Solution / Mitigation
Update to langchain-anthropic version 1.3.3, which includes fixes for trailing whitespace in assistant messages and support for the effort="max" parameter.
Classification
Affected Vendors
Related Issues
Original source: https://github.com/langchain-ai/langchain/releases/tag/langchain-anthropic%3D%3D1.3.3
First tracked: February 15, 2026 at 07:00 AM
Classified by LLM (prompt v3) · confidence: 85%