AI scanner: how universities can check for AI text

Statistical analysis for academic work

AI scanner for university Start analysis

Our AI scanner and detector for AI texts checks online how closely your text resembles ChatGPT, Claude, Gemini and other LLMs.

Every year, 10,000+ students, authors and universities trust corrected.eu
Result in about 3 minutes by email: PDF file and online view
100 % anonymous · nothing passed on to universities or libraries
Combo bundle + plagiarism for €0.39 instead of €0.58 (33 % off)
Price examples
Term paper 10 standard pages
€2.90
Bachelor's thesis 45 standard pages
€13.05
Dissertation 100 standard pages
€29.00
All common language models ChatGPT, Gemini, DeepSeek and more
In-depth analysis multi-level and pattern-based
Structured report PDF with passage marking
GDPR-compliant 100 % anonymous, nothing passed on

Submit your work for the AI check and mark pages

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PDF, DOCX, TXT, ODT, RTF · max. 100 MB

Upload securely and anonymously, with no registration at all. Hosting and processing take place entirely in Germany, all SSL-secured. Your upload is deleted automatically and irrevocably after 7 days.

How meaningful is your result? How to read the scan properly A percentage above zero does not automatically mean plagiarism: quotations, the reference list and false alarms push the number up. Here we explain what the number means in an individual case. Meaning & interpretation →
Features

What our AI scanner analyses

Multi-level analysis for precise detection

Multi-level analysis

Our system analyses texts on several levels at the same time: linguistic, statistical and pattern-based, for reliable results.

Passage marking

Conspicuous passages are highlighted in colour directly in the document. You can see at a glance where machine influence was detected.

Probability value

For the whole text and for individual sections you receive a clear percentage probability.

PDF report

The full report contains an overall rating, a section analysis, detected patterns and recommendations.

How does an AI scan work at university?

The AI scan works in several steps. First the text is split into sections. Each section is then examined on three levels of analysis: statistical (perplexity, burstiness), linguistic (sentence patterns, phraseology) and pattern-based (trained classifiers for known AI models). The individual results of the AI scan are combined into an overall finding.

The result is not binary, not a simple "yes" or "no", but a nuanced probability value with passage marking. That way you can judge for yourself how strong the machine influence is and in which parts of the text it shows.

Which uses is it suitable for?

The tool, often called an AI detector, is used in very different contexts. In education, teachers and universities use it to spot generated content in academic work and exams. In business, marketing teams and content managers check whether texts from service providers were written independently. In the media, editorial teams make sure that submitted articles contain no machine-generated passages.

Authors use the tool as a precaution too: if you want to be sure that texts you wrote yourself are not wrongly classed as machine-generated, you have them checked beforehand. For texts that started from AI-generated text, a check before you submit makes particular sense.

Understanding what the result tells you

AI scanner: what the percentage values really mean

After the scan the question remains what the value means. This scale answers it: it marks the line between the usual range and a critical AI share.

The scanner shows a spectrum from green to red. Red begins at 50 per cent; everything below is an assessment and not proof.

You can find a more detailed discussion under Meaning, limits and interpretation.

AI scanner vs. detector: what is the difference?

Both terms describe the same method. Some users speak of a "scanner", others of a "detector" or "detection tool". Our service is available under all of these terms and works identically, whichever name you use.

Limits of AI detection

No detection tool in the world can promise absolute certainty. Heavily revised texts, very short texts (under 100 words) and texts in rare languages give less reliable results. Our report communicates these limits openly and avoids exaggerated claims of certainty.

Models detected by the AI scanner

  • ChatGPT (GPT-6 Astra and GPT-6 Luna)
  • Claude Opus 5.5 & Haiku 5.5 (Anthropic)
  • Google Gemini 4 Argon & Gemini 3.8 Flash
  • Meta Llama
  • Mistral & Mixtral
  • DeepL Write & Quillbot
  • Other open-source LLMs
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What our customers say View all reviews →

Helpful combo scan

„Helpful combo scan. I ordered the plagiarism + AI scan and was able to correct several citations, and on the repeat scan the result came out at 0%.“

Silas, customer review (source: Trustami)

Accurate results from the plagiarism and AI scan

„I have absolutely nothing to complain about. The results are satisfactory and completely comprehensible. Both the plagiarism and the AI scan gave accurate results. Although a technical error occurred during my second scan, I was helped promptly, even on a Saturday. All in all I am very satisfied and can warmly recommend the service!“

Charlotte, customer review (source: Trustami)

Combo scan in 2 minutes

„The combo scan arrived by email in 2 minutes, great!“

J., customer review (source: Trustami)
FAQ

Frequently asked questions

How much does the AI scan cost?

The check costs from €0.29 per page (250 words). The combo bundle with the plagiarism check costs from €0.39 per page.

How quickly do I get the result?

The result is usually ready within 30 minutes.

Which file formats are accepted?

We accept DOCX, PDF and TXT. The text should be at least 100 words long for a reliable analysis.

What happens to my document?

Your document is used only for the analysis and then deleted in line with GDPR. Nothing is passed on to third parties.

Does the check also detect Claude texts?

Yes. Our system is trained on all common LLMs, including Claude Opus 5.5 and Haiku 5.5 from Anthropic.

Is the result admissible in court?

The result is a well-founded statement of probability. It is suitable as an indication but does not replace a forensic expert opinion.

What is the difference from the AI detector?

None. Both terms describe the same method. We offer the service under different names because users search for it in different ways.

Can I check several texts at once?

Yes. Several files can be uploaded in one order. The price is calculated per document by page count.

Does the check also work in English?

Yes. Besides German, we also analyse English-language texts reliably.

Are paraphrased texts detected?

Often, yes. Deep patterns remain even after paraphrasing. Heavily revised texts are harder to detect, however.

What sets you apart from free tools?

We combine several algorithms, deliver a structured PDF report and handle your data in line with GDPR. Free tools do not offer that.

Do you offer business access for universities?

Yes. For regular or large orders we offer business terms. Contact us for a quote.

Scan your AI text now

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Result in 30 minutes at most
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