QuillBot is a paraphraser. Bypasso is an AI humanizer. They might sound similar, but only one actually bypasses AI detection tools like GPTZero, Turnitin, and Originality.ai.
Bypasso wins for AI detection bypass. It achieves a 92% bypass rate vs QuillBot's 25%. QuillBot is a great paraphraser, but it was never designed to beat AI detectors — and it doesn't.
QuillBot replaces words with synonyms. AI detectors don't look at individual words — they analyze statistical patterns across entire texts. The "AI fingerprint" remains even after paraphrasing.
QuillBot's output maintains the same low perplexity (predictable word choices) as the original AI text. Bypasso specifically raises perplexity to 70-100, matching human writing patterns.
Paraphrasing keeps the same uniform sentence structure. Bypasso adds natural burstiness — mixing short and long sentences — which is a hallmark of human writing.
Turnitin has specifically trained its detection system to identify text processed by QuillBot and other paraphrasers. Using QuillBot can actually make your text more suspicious.
Stop using paraphrasers and start using a real AI humanizer. Try Bypasso free with 500 words.
Try Bypasso Free →No credit card required • 500 words free