Exolio

Exolio AI is a free AI text detection tool that gives an instant percentage score showing how likely any text is to be AI generated. Unlike other detectors it shows sentence-level highlighting so you can see exactly which parts flagged as AI written. Users can also correct false positives when genuine human writing gets wrongly flagged, and flag text that has been run through an AI humaniser so the model improves over time. Free for the first month, no sign-up needed for your first check.