How AI detectors decide what reads as AI

AI detectors don't read your text the way a teacher does. They look for statistical patterns: how predictable each next word is, how evenly sentence length varies, and how often common phrasings repeat.

Why scores differ between tools

Each detector is trained on different examples and tuned to a different balance between false alarms and misses. The same paragraph can score 20% on one tool and 70% on another. A score is a signal to look closer, not a verdict.

Reading a sentence-level result

Sentence highlights show where the patterns are strongest. Short, generic sentences often score higher than they deserve, and a single strong sentence can pull up the whole score.

What to do with a high score

Read the highlighted sentences out loud. Rewrite the ones that sound generic in your own words, add specifics only you would know, and check the score again.