Pytest-style open-source framework for testing LLM apps
DeepEval lets you write unit tests for language-model applications the way you would for ordinary code. You define test cases, choose metrics such as answer relevancy or faithfulness, and run them in CI.
It covers RAG pipelines, chatbots and agents, and works with any model. A companion cloud, Confident AI, stores results and tracks regressions.
It is a practical way to stop prompt changes from quietly breaking things. Python developers will feel at home right away.
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