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AI Detector

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Human-likeMixedAI-like

Let’s check this text!

Paste an essay, article, email or assignment (at least 80 words) — or upload a Word, PDF or text file. Every sentence is scored and highlighted.

AI pattern report
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Free AI detector with sentence-level evidence

Paste an essay, article, assignment, email or any other text of 80 words or more and get a clear likelihood that it was written or heavily assisted by AI — as a percentage with a confidence range, not a bare verdict. Every sentence is scored and highlighted in your original text (human-like, mixed or AI-like), and clicking one explains which patterns influenced the result. The report lists the signals behind the score, stays honest about uncertainty, and lets you hand the text straight to the Humanizer if you want it to read more naturally. Works in 70+ languages.

  1. 1

    Add the text

    Paste at least 80 words, upload a Word, PDF or text file, or drop the file on the editor. Longer passages give a more reliable result.

  2. 2

    Analyze

    The document is checked for rhythm, vocabulary, structure and formulaic phrasing, then each sentence is scored on its own so you can see exactly where the patterns are.

  3. 3

    Review the evidence

    Read the likelihood and confidence, click highlighted sentences for reasons, then copy or download the report — or open the Humanizer with one click.

A range, not a verdict

Results show a likelihood with a confidence band and the method used, so you can weigh them properly. No detector can prove authorship; this one tells you how sure it is.

Sentence highlights

Human-like, mixed and AI-like sentences are colour-coded inside your text, with a popover that explains the two strongest signals for each one.

Transparent signals

The report lists what influenced the score — sentence variety, word choice, predictability, formulaic openers — each with its own value.

Fix it next door

When a text reads AI-like, the Humanize button sends it to the Humanizer with the language preserved, so you can rewrite it in your own voice.

Frequently asked questions

Is the AI detector free?
Yes. Guests and free accounts get a daily word allowance; Pro removes the limits and uses the strongest verification models through no-data-retention providers.
How accurate is it?
It is a probability estimate that combines document-level and sentence-level analysis. Short, edited or very formal texts are harder to judge, which is why the report shows a range and a confidence level instead of a single yes/no.
Why do I need 80 words?
Below roughly 80 words there is too little writing to measure rhythm and variety reliably, so the result would be guesswork.
Can I use this as proof?
No. Treat the result as guidance to start a conversation or a closer review, never as evidence on its own.
Is my text stored?
Your text stays in your own browser between visits. Requests are processed in memory, never stored on our servers, and not used to train models.

AI detection is probabilistic. Use the result as guidance, not as proof of who wrote a text.