Paste up to 2,000 words and get an instant estimate of how likely your text is to read as ChatGPT, Claude, or Gemini output. Free, no account, and your text is never stored.
0 / 2,000 words
How it works
Drop in an essay, article, email, or any passage up to 2,000 words. No account and no card required.
The detector checks the statistical tells of AI writing: formulaic transitions, hedging phrases, and overly formal vocabulary, weighted by how densely they appear.
You see an AI probability, the exact patterns found, and, if the text is flagged, a one-click path to humanize it for free.
AI models write with fingerprints. They lean on the same formulaic transitions ("Furthermore", "Moreover", "Consequently"), pad sentences with hedging ("It is important to note that..."), and reach for formal vocabulary where a person would use a plain word. Our detector scans your text against a curated rule set of these patterns, the same rules that power our humanizer engine, and weights each hit by severity and by how densely the patterns appear per 100 words.
That density-based score becomes the AI probability you see. Because the check is pure pattern analysis, it runs instantly, works offline from any AI model, and never sends your text anywhere for processing. It also means the report is explainable: you see exactly which phrases triggered the score, not just a number.
No AI detector is definitive. Not this one, not GPTZero, not Turnitin. Every detector, statistical or model-based, produces false positives on clean human writing and false negatives on carefully edited AI text. Treat any score, anywhere, as an estimate of risk rather than proof of authorship.
What our score is good for: a fast, free first read on whether your text carries the obvious tells that commercial detectors lock onto. If it comes back flagged here, it will very likely get flagged by stricter tools too, and that is the moment to humanize it before you submit anything.
FAQ
It runs a pattern-based analysis: your text is scanned against a curated rule set of hallmark AI writing tells, such as formulaic transitions like Furthermore and Moreover, hedging phrases like It is important to note, and overly formal vocabulary. Each hit is weighted by severity and by how densely the patterns appear per 100 words, and that density becomes the AI probability you see. The check runs instantly and does not call any AI model.
More free tools
The same engine behind this detector powers our humanizer. Paste your flagged text and watch the score drop, free for your first 500 words.
No card required. Free to try.