langchain==1.4.2

langchain-ai/langchain Releases Developers & Open Source 09/19/2026, 01:31 Score 8/10

Summary

Changes since langchain==1.4.1 release(langchain): 1.4.2 ( #40621 ) fix(langchain): preserve model-generated tool calls in HITL tool call edits and add notice to ToolMessage ( #40463 )

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