Free online AI Content Detector tool — results appear instantly in your browser. No signup required.
AI Content Detector estimates how likely a piece of text was written by an AI model versus a human. It uses simple statistical signals such as sentence-length variation (burstiness), vocabulary diversity and repetitive patterns. The result is a helpful heuristic for editors and educators; it is not a definitive proof of AI authorship. All analysis runs locally in your browser, so the text you check is never sent to any external AI detection service. The tool returns AI-like and human-like percentage scores together with a short explanation of the metrics used. Treat the score as one signal among many when assessing content originality. Human writing can sometimes look statistical, and sophisticated AI output can mimic human patterns, so professional judgment remains essential.