How Do AI Detectors Work? Explained

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Aug 25, 2025, 4:21:42 AM (13 days ago) Aug 25

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Curious about how do AI detectors work? These tools scan writing for signs that reveal AI-generated patterns. They use behavioral analysis, semantics, statistics, stylometry, and even hidden watermarks to judge text.

Key criteria include burstiness (sentence variation), perplexity (word predictability), embeddings (mapping words as data), and classifiers (ML models trained on human vs AI writing).

Accuracy is high but not perfect. Tools like Originality AI and Turnitin claim 90%+, but paraphrasing can still trick them.

Why it matters: detectors help fact-check content, prevent plagiarism, speed moderation, and ensure compliance with laws. They face challenges like bias, false positives, and evolving AI models but remain essential for online trust.