What are the best alternatives to Langfuse?

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

Are there free alternatives to Langfuse?

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

20 alternatives ranked by real usage data. Langfuse scores 22/100 — 20 tools score higher.

An open-source LLM engineering platform for tracing, evaluation, prompt management, and metrics. [#opensource](https://github.com/langfuse/langfuse)

20 alternatives

19 free options

20 score higher

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