AI Detection for Theses & Dissertations

Check your thesis for AI-generated content

PaperScan analyzes your bachelor's thesis, master's thesis, or dissertation chapter by chapter — detecting the sandwich pattern where the introduction and conclusion are written independently but the core chapters are AI-generated.

Detection model optimized for English academic writing

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GDPR-compliant
Auto-deleted after analysis
Servers in Germany
⭐ Recommended · Bachelor's thesis
Standard Plan
19,99
Up to 100 pages · Bachelor's thesis
  • Overall AI score with rating
  • Chapter-by-chapter analysis
  • Sandwich pattern detection
  • Concrete improvement suggestions
  • Grammar & spelling check
  • Style break detection
  • PDF report download
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Premium Plan
29,99
Up to 250 pages · Master's thesis, dissertation
Choose Premium

One-time payment · no subscription · GDPR-compliant

The sandwich pattern — and why supervisors know it

In theses, AI use tends to follow a predictable profile: the introduction and conclusion sound authentic — but the literature review, methodology, and analysis chapters give it away.

Experienced supervisors and examiners know: the most intellectually demanding sections of a thesis are the literature review, the methodology, and the analysis. These are where a student's independent thinking should be most visible — and they are precisely the chapters that reveal AI authorship when it is present.

AI-generated text in a literature review sounds academically correct but lacks critical engagement. Sources are cited but not put in dialogue with each other. Arguments are described rather than developed. The writing is smooth — and oddly flat.

Which chapters are most commonly flagged?

  • Literature Review: AI summarizes theories accurately — but without the critical positioning and original synthesis examiners expect.
  • Methodology: Generic formulations like "a qualitative approach was adopted" with no specific connection to the research question.
  • Analysis / Results: Style break from the introduction — more uniform sentence length, less first-person voice, weaker argumentation.
  • What PaperScan detects: Each chapter scored individually — the score progression makes the sandwich pattern immediately visible.

Optimized for English academic writing

PaperScan's English detection model has been specifically calibrated for the conventions of English thesis writing — including the stylistic differences between AI-generated academic prose and genuine scholarly writing in English.

Example Analysis · Bachelor's Thesis (72 pages)
1. Introduction
14
2. Literature Review
74
3. Methodology
80
4. Findings & Analysis
58
5. Discussion
41
6. Conclusion
17
⚠ Sandwich pattern detected — Score 61 Introduction and conclusion written independently. Chapters 2–4 show strong AI patterns. Classic selective AI use profile for theses.
Results in 3 steps
01

Upload your PDF

Upload your thesis as a PDF — Standard up to 100 pages, Premium up to 250 pages. Drag & drop or select file. No account needed.

02

Choose a plan & pay

Standard (€19.99) for bachelor's theses up to 100 pages — Premium (€29.99) for master's theses and dissertations up to 250 pages. One-time payment.

03

Download your report

PDF report with AI score per chapter, detected style breaks, concrete improvement suggestions, and grammar check. Ready in approx. 3–8 minutes.

Frequently asked questions about thesis AI detection

Does PaperScan reliably detect the sandwich pattern?

Yes — this is one of PaperScan's core strengths. Chapter-by-chapter analysis makes the typical score profile visible: low for introduction and conclusion, high for literature review and methodology. Style breaks between chapters are explicitly flagged in the report.

What is the difference between Standard and Premium plan?

Both plans include the full report — chapter-by-chapter analysis, improvement suggestions, grammar check, and style break detection. The only difference is the maximum page count: Standard up to 100 pages (typical bachelor's thesis), Premium up to 250 pages (master's thesis, dissertation).

How long does the analysis of a thesis take?

Bachelor's thesis (50–80 pages): approx. 3–6 minutes. Master's thesis (80–150 pages): approx. 6–10 minutes. You receive a direct link to your report after payment — the page doesn't need to stay open.

Is PaperScan's detection model actually optimized for English?

Yes. PaperScan uses a dedicated detection pipeline for English academic texts. It has been specifically calibrated for the conventions of English thesis and dissertation writing — separate from the German-language model.

Is my thesis kept confidential?

Yes. Your file is automatically deleted after analysis and stays on the server for a maximum of 24 hours. No account required, no personal data stored. Server location: Germany. Fully GDPR-compliant.

Does Standard plan cover master's theses too?

If your master's thesis is under 100 pages, yes. Many master's theses fall between 60–120 pages — check your PDF page count before uploading. After upload, PaperScan automatically recommends the right plan for your document.

Check your thesis for AI now

Upload your PDF — your full report is ready in 3–8 minutes. One-time payment, no subscription.

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⭐ Standard · up to 100 pages · €19.99  |  Premium · up to 250 pages · €29.99