DeepEval
LLM and agent evaluation framework that feels like unit testing with pytest.
Open source
Best for Python teams that want to treat LLM/agent evaluation as a first-class testing discipline—with pytest-style assertions, CI integration, and built-in metrics.
Selection advice
Choose DeepEval when your team treats LLM quality like software quality—with reproducible tests, CI gates, and metric-driven iteration.
Best for
- pytest integration
- CI/CD evals
- regression testing
- agent testing
Not ideal for
- teams not using Python
- projects that need a managed cloud platform only
Core concepts
test casesmetricsassertionsCI/CDpytest
Minimal implementation shape
Write a pytest-like test case with DeepEval metrics (faithfulness, relevancy, etc.), run it in CI, and fail the build when quality thresholds aren't met.