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LangSmith SDK 0.12.3

UpdateUnverifiedAdded Sep 24, 2026

- release(js): 0.10.2 by Mukil Loganathan (@langchain-infra) in #3495 test(py): benchmark compressed trace ingestion by Quentin Brosse (@QuentinBrosse) in #3497 fix(py): make the multipart body replayable across both retry layers by Thibaut Lehmann (@thibautlehmann) in #3483 perf: avoid ThreadPoolExecutor churn in hybrid tracing [closes LSDK-213] by Open...

Topics: Security, Data integration, Observability, Developer tools

LangChain's release notes

More LangSmith releases

Every LangSmith release
DateRelease
Sep 9LangSmith SDK 0.12.4unverified
Update
Sep 5LangSmith SDK 0.12.2unverified
Update
Sep 15LangSmith SDK 0.12.5unverified
Update
Sep 16LangSmith SDK 0.12.6unverified
Update
Sep 1LangSmith SDK 0.12.1unverified
Update
Sep 1LangSmith SDK 0.12.0unverified
Update
Sep 18LangSmith SDK 0.13.0unverified
Update
Sep 21LangSmith SDK 0.14.0unverified
Update

Also shipped on Sep 9, 2026

LangChain in September 2026

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