AI Score is a percentage that reflects how likely a certain piece of text was produced by an AI model versus written by a human. A 0% score indicates that the material was very likely written by a human, whereas a score close to 100% suggests the opposite.
The score is computed through statistical pattern analysis of the text, including sentence predictability, vocabulary similarity, and structural repetition. These patterns are commonly found in output from AI models, and they can only be treated as a probability signal, not a definitive verdict, especially for short texts or writing by non-native English speakers. Read more in our blog post on How to Tell If Something Was Written by AI. Quetext's AI Detector provides a line-by-line breakdown alongside your overall score.