QuillBotAI Pro
Catch AI text instantly. 100% free
What it does
Free AI content detector by QuillBotAI Pro. Scans ChatGPT, GPT-4o, GPT-5, Gemini Pro & Claude 3.5 with 99.8% AIDEF-benchmark accuracy. Sentence-level heatmap, perplexity + burstiness scoring, built-in humanizer bypass. No signup.
Free AI content detector with a sentence-level heatmap. Fair to non-native English writers, catches humanized text, zero data retention. No sign-up.
Paste your text and instantly see what's AI-generated, human-written, or AI-refined — with a sentence-by-sentence breakdown and honest confidence scores. No sign-up, no word limit. An AI content detector — also called an AI checker — reads a piece of text and estimates how likely a machine wrote it. It hunts for the patterns large language models leave behind and works out whether the writer leaned on a tool like ChatGPT, GPT-5, Claude or Gemini. Most detectors also over-flag non-native English writers as a side effect of how they work — QuillBotAI Pro is built specifically to correct for that. It is not a plagiarism checker. Plagiarism tools ask whether text was copied from somewhere else.…from quillbotai.pro
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