What are the best alternatives to langsmith?

The top alternatives to langsmith are PostHog, SafetyBench Eval, Langfuse, ranked by real usage data on Unfragile.

Are there free alternatives to langsmith?

Yes, 19 free alternatives to langsmith exist, including PostHog, SafetyBench Eval, Langfuse.

20 alternatives ranked by real usage data. langsmith scores 27/100 — 20 tools score higher.

Client library to connect to the LangSmith Observability and Evaluation Platform.

20 alternatives

19 free options

20 score higher

Open-source product analytics with LLM observability — traces, costs, evals unified with product metrics.