Quillbot ships its own AI detector alongside its paraphraser. The Humanizer produces text it consistently passes as human.
Quillbot is best known for paraphrasing, but its AI detector is increasingly used in classrooms and content shops as a free second-opinion checker. Ironically, Quillbot's own paraphraser often doesn't bypass its own detector — the paraphrased text retains too many AI-like structural patterns.

Quillbot AI detector showing humanized text classified as human
Quillbot's paraphraser swaps words and lightly reorders clauses, but it doesn't change the broader structural fingerprint of AI text. The Humanizer rewrites at the sentence-structure level — that's what's needed to drop the detector score, not just synonym swaps.
Paste your AI-generated draft into The Humanizer, click Humanize, copy the output, and run it through Quillbot's AI detector. For longer texts, enable Supercharged mode for better consistency across paragraphs.
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