QuillBot AI detector is generally regarded as having high accuracy in distinguishing AI-generated text from human-written text. It uses advanced techniques that analyze writing patterns such as sentence structure, word choice, perplexity, and burstiness to detect AI content. Independent tests show an accuracy rate around 80% , with the detector performing well on clear AI-generated content and refined AI text. However, it is not foolproof and can sometimes produce false positives , especially with complex or highly sophisticated AI text or unique human writing styles. It is often recommended to use QuillBot's AI detector alongside other tools for the best verification results. Overall, QuillBot's AI detector is a solid and accessible tool, constantly updated to improve detection quality, but like any AI detector, it has limits and should be interpreted carefully.
