QuillBot AI Detector is the detector designed for writers, not just for catching cheaters. Unlike other tools that simply flag your work and leave you stranded, QuillBot integrates its detection directly with its world-famous Paraphraser. This allows you to check your essay or article for accidental "AI patterns" and instantly rewrite those sections with a single click to ensure your work reads as 100% human.
If you are a student or freelancer, you know the fear of a "False Positive" (when a professor accuses you of using AI even though you didn't). QuillBot helps you verify your own work before submission. It is trained on the latest models (including GPT-4o, Claude 3.5, and Gemini) and provides a granular, sentence-by-sentence breakdown of what looks robotic and why.
Integrated Paraphraser: The killer feature. If a paragraph is flagged as AI, you don't need to open a new tab. You can highlight the text and click "Rephrase" to instantly humanize it using QuillBot’s advanced rewriting engine.
Granular Analysis: It doesn't just give a single score. It highlights specific sentences in Red (High Probability) and Yellow (Possible AI), helping you pinpoint exactly which parts of your writing need more personality.
Writing Pattern Recognition: It analyzes "Perplexity" and "Burstiness" to detect the distinct lack of variety found in machine-generated text, distinguishing between fully AI-written text and text that was merely AI-assisted.
Multi-Language Support: While most detectors are English-only, QuillBot supports detection in Spanish, French, and German, making it a vital tool for international students and bilingual writers.
QuillBot AI Detector is a powerful solution designed to help users with their needs. Explore the features below to see how it can benefit your workflow.
Optimized for performance and speed.
Trusted by thousands of users.
Grows with your needs.
Discover the capabilities of QuillBot AI Detector.
AI Detection & Rewriting
One-Click Paraphrasing
~1,200 Words per Scan
English, Spanish, French, German
GPT-4o, Claude, Gemini
Free & Premium ($9.95/mo)
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