AI Detector: Check if a Text Was Written by AI
Paste any text and see in seconds how much of it was written by AI such as ChatGPT, Gemini or Claude, and how much by a person. You get a clear percentage and every part of the text marked by color.
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We do not store your text: it goes to the detection engine only during the check, and the emailed report carries the result, not the text. We also send tips to improve your store, and you can unsubscribe with one click. 50 to 500 words, three free checks per day.
How does an AI detector work?
An AI detector uses a model trained on millions of human-written texts and texts generated by language models. It learns the subtle differences between them: word choice, repeated structures, sentence rhythm and the stock transitions that AI tends to use. It does not look for a single word; it reads the whole text and estimates the probability that each part was written by AI.
The tool splits your text into segments, judges each one on its own, then combines the results into one percentage. That is how it catches mixed text: a paragraph written by a person and finished by ChatGPT, or a human article with some paragraphs reworded by a paraphrasing tool.
| Result | What it means |
|---|---|
| AI-generated | Most of the text matches the patterns of language models. |
| Mixed | Some parts are human and some are AI-generated or AI-assisted; the highlighted text shows which. |
| Human | The text reads as written by a person. |
How accurate is the result?
The result is a probability estimate, not proof. Accuracy is highest on texts above 150 words and lower on very short, list-like or highly formal writing. Use it to spot where AI style shows up, then make the final call with a human review.
To check whether a text copies content published online, rather than who wrote it, use the plagiarism checker.
Frequently Asked Questions
Is this AI detector free?
Yes. Every visitor gets three free checks per day with no sign-up, each up to 500 words. We ask for your email so we can send you a copy of the report.
Which AI models can it detect?
The detection model is trained on text from the major language models, including ChatGPT, Gemini and Claude. It reads writing patterns rather than looking for a specific model, so it also flags text from other AI writing tools.
Can it wrongly flag human writing as AI?
Rarely, but it can happen, especially with very short or very formal text. That is why the result is shown as a probability estimate. Always add a human review before making any decision.
Do you store the text I check?
No. The text is sent to the detection engine only for the duration of the check. The emailed report contains the percentages and the verdict, not the text itself.
How long should the text be?
At least 50 words. Accuracy improves with length, and confidence is clearly higher above 150 words.
Does it work for Arabic text too?
Yes. The tool was built with Arabic content in mind and tested on Arabic texts of known origin before launch. It works with English and other languages as well.
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