AI Content Detector: free online tool
AI Content Detector scores text for how likely it is to be AI-generated and highlights individual sentences. It combines a language-model classifier with statistical measures such as burstiness.
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How to use AI Content Detector
- Open AI Content Detector and paste your text or upload a PDF.
- Run the analysis.
- Review the overall score and the sentence heatmap.
What you can do
- Overall AI probability and per-sentence heatmap
- Burstiness and predictability measures
- Private in-browser mode or a stronger Advanced AI ensemble
Two ways to run AI Content Detector
In your browser
Stylometric checks plus a small neural classifier running on your device.
Advanced AI
Adds Binoculars and transformer detectors on our private GPU server for higher accuracy.
Privacy and where your file is processed
In your browser mode the text never leaves your device (the small classifier model is downloaded from a public CDN the first time; your text is not). Advanced AI mode: needs a free account, runs on our own private GPU server (not a cloud AI provider), is never used for training or shared with third parties, and the upload and result are deleted automatically after processing.
Free usage limits
Free to use. In your browser: no account, no file-size limit and no usage limit. Advanced AI mode (our private GPU server): free account with 150 credits a month (1 credit per page for OCR and PDF to Word), files up to 50 MB and 100 pages. There is no paid tier.
Frequently asked questions
How reliable are AI detectors?
Not fully. Every detector produces false positives and false negatives, especially on formal or non-native writing. Treat the score as one signal, never as proof.
Is my text uploaded?
Not in browser mode. In Advanced AI mode it goes to our own GPU server as a temporary job and is deleted after processing.