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lm-evaluation-harness vs DeepEval: catalog facts
lm-evaluation-harness	DeepEval
Free Free and open source.	Free The framework is free and open source.
Windows, macOS, Linux, Command line	Command line
Hundreds of benchmark tasks in one tool New tasks defined through YAML templates	Treats LLM output checks like unit tests Very active development with a large user base
Command-line and Python only, no graphical interface Running large benchmarks needs substantial compute	Aimed at developers comfortable with Python code Evaluations that rely on a judge model may need API access to one
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License not stated
No account needed	Not stated if an account is needed
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.