7 LLM eval tools compared: which one for what
Original title: LLM eval tools compared, which one for what (7 picks)
The author compares 7 LLM eval tools in two groups: code libraries and trace-storing platforms. promptfoo handles YAML-based prompt regression tests and red-teaming, DeepEval fits pytest and CI, Ragas scores retrieval quality, Langfuse and Arize Phoenix offer open-source tracing, LangSmith pairs with LangChain/LangGraph, and Braintrust is a commercial platform with a free tier. The author advises hand-labeling a few dozen examples from real traffic before trusting any automated metric.
The author sorts 7 LLM eval tools into code libraries and platforms by use case, and suggests hand-labeled samples before trusting automated metrics.
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