Compare software

DeepEval vs Evidently: catalog facts
DeepEval	Evidently
Free The framework is free and open source.	Free Free and open source under the Apache 2.0 license.
Command line	Command line
Treats LLM output checks like unit tests Very active development with a large user base	Covers both LLM systems and classic ML models Checks for drift, hallucinations and data leaks
Aimed at developers comfortable with Python code Evaluations that rely on a judge model may need API access to one	Requires writing Python code to set up checks Some evaluations depend on access to a judge model
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.