Langfuse

Langfuse is useful for teams that already run an LLM application and need to explain or improve its output. Trace observations help inspect individual model interactions, while datasets and experiments support repeatable evaluations of changes. The platform does not create a reliable benchmark automatically: test cases, metrics and review processes still need ownership. It is stronger as an engineering quality instrument than as an end-user AI assistant. Compare it using a real failing conversation, an evaluation dataset and the team's ability to act on results.