LangSmith

Trace, test and monitor LLM apps in production.

● TypeScript⚖ Proprietaryupdated 1 week ago

README.md

LangSmith is a platform to trace, evaluate and monitor LLM applications — capture every step of a run, build eval datasets, and watch quality in production.

Continue your stack

What teams reach for next — and why each earns a place beside LangSmith.

Pairs well with

LangGraph

Build stateful, multi-actor LLM apps as graphs — durable execution, human-in-the-loop, streaming.

Why it fitsOnce your graph runs in production you'll want to see why a run failed — LangSmith traces every node.