Evidently API has changed. Read more about API updates and new Evidently Cloud.

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Evidently helps evaluate, test, and monitor data and AI-powered systems.

  • Evidently is an open-source Python library with over 25 million downloads. It provides 100+ evaluation metrics, a declarative testing API, and a lightweight visual interface to explore the results.
  • Evidently Cloud platform offers a complete toolkit for AI testing and observability. It includes tracing, synthetic data generation, dataset management, eval orchestration, alerting and a no-code interface for domain experts to collaborate on AI quality.

Our goal is to help teams build and maintain reliable, high-performing AI products: from predictive ML models to complex LLM-powered systems.

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Get started

Run your first evaluation in a couple of minutes.

LLM quickstart

Evaluate the quality of text outputs.

ML quickstart

Test tabular data quality and data drift.

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Feature overview

What you can do with Evidently.

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Evidently Platform

Key features of the AI observability platform.

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Evidently library

How the Python evaluation library works.

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Learn more

Metrics

Browse the catalogue of 100+ evaluations.

Cookbook

End-to-end code tutorials and examples.