Know your AI score before you send.
Paste any passage and get its AI-probability against a real detection model — then humanize it in the same place to bring the score down.
About AI detection
How accurate is the AI detector?
It scores your text against a real detection model and reports an AI-probability percentage. No detector is perfect, so treat the score as a strong signal and re-check after you humanize.
What can it detect?
Text from ChatGPT, Claude, Gemini, Llama and other models. Paste any passage to get a human-vs-AI probability.
Is detection included?
Yes — AI detection is part of Pro, alongside unlimited humanizations and longer text. Both plans start with a 3-day free trial.
Do you store what I check?
No. We never write your text to our servers — only an anonymous hash for abuse limits.
Guides to the detectors you'll face
Each detector flags text differently. These guides explain what each one measures and how to verify your score first.
How to pass GPTZero
What GPTZero measures (perplexity and burstiness), why it flags AI text, and a workflow to humanize your writing and verify the score before anyone else checks it.
Turnitin AI detection, explained
How Turnitin's AI writing detection works inside the Similarity Report, why it flags text, what its false-positive caveats mean, and how to humanize and verify your writing.
How to pass Copyleaks AI detection
How the Copyleaks AI Content Detector works, why it flags text, where it's used (enterprises, LMS platforms), and a verify-first workflow to humanize your writing.
How to pass Originality.ai
How Originality.ai scores content for publishers and agencies, why freelance and marketing copy gets flagged, and how to humanize your text and verify the score first.
How to pass ZeroGPT
What ZeroGPT is, how its free AI detection works, why scores swing, and how to humanize your text and verify the result against real detection signals.
How to pass Winston AI
How Winston AI detects machine writing (including OCR on scanned documents), who uses it, and a humanize-and-verify workflow that holds up.
Check, humanize, verify
Detection and humanizing in one place — with a 3-day free trial.