AI detectors try to estimate whether text was written by a human or generated by an AI model. They do this by analyzing patterns such as predictability, sentence variation, vocabulary style, token probability, and machine-learning classification scores. However, AI detection is not perfect. It should be treated as a signal, not as final proof. How Do AI Detectors Work? A Complete Guide to the Science Behind AI Text Detection AI detectors estimate whether text looks machine-generated, but they cannot prove authorship with 100% certainty. Introduction Artificial intelligence has changed how people write. Tools such as ChatGPT, Claude, Gemini, Grok, and other writing assistants can generate essays, blog posts, emails, scripts, product descriptions, and summaries in seconds. As AI-generated text becomes common, many schools, publishers, businesses, and content platforms want to know whether a piece of writing was written by a person...
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