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release notes
Published 1/16/2026
Changes since langchain==1.2.4
release(langchain): 1.2.5 (#34772) fix(langchain): add metadata configuration to summarization model invocation (#34763) feat(langchain): update summarization prompt (#34754) chore: add tests for agent name metadata when streaming (#34764) Revert "metadata" metadata
The agent engineering platform
https://docs.langchain.com/langchain/