> For the complete documentation index, see [llms.txt](https://docs.garak.ai/garak/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.garak.ai/garak/garak-components/scan-evaluation.md).

# Scan evaluation

How do we determine what passes? Using a garak evaluator.

Once the harness has had the probes send prompts to the generators and processed the outputs with detectors, the result is a list of scores. Evaluators detemine what scores pass or not. Scores are between 0.0 and 0.5. The default evaluator is ThresholdEvaluator, which considers and score of 0.5 of higher a "hit".