Detect AI Writing in Academic Papers with Confidence
Before your university runs its check, run yours. The best way to detect AI writing before submission is to use a professional tool that analyses every sentence and reports whether it was written by ChatGPT, Claude, Gemini, Llama or another LLM. Results in 15 minutes · from $0.29/page.
How Universities Are Responding to AI Writing
The rapid adoption of AI writing tools has prompted significant policy changes across academic institutions worldwide.
Updated Integrity Policies
Most universities now explicitly address AI use in their academic integrity policies. Many classify undisclosed AI text generation as academic misconduct, alongside plagiarism and fabrication. Running a check to detect AI writing in your own paper before submission has become standard practice for careful students.
Dedicated AI Detection Tools
Institutions are investing in tools to detect AI writing that go beyond traditional plagiarism checking. These tools analyse statistical text properties — the same approach used by our PlagAware-powered detector.
Proactive Student Responsibility
Even in institutions with permissive AI policies, demonstrating original thinking and independent writing remains the core expectation. Using a tool to detect AI writing in your paper helps you verify that it meets this standard before anyone else does.
How to Detect AI Writing in 3 Steps
Upload Your Document
Submit your academic paper as .docx, .pdf, or .txt. Files are processed on German servers and never added to any public database. No account required.
AI Writing Analysis
The PlagAware engine analyses each sentence for perplexity, burstiness and token distributions. This is how we detect AI writing regardless of which model was used to generate the text — ChatGPT, Claude, Gemini or anything else.
Actionable Report
Receive a PDF within 15 minutes with every sentence scored from 25 (human) to 75 (AI). The report makes it easy to detect AI writing at the sentence level — flagged passages are highlighted so you can revise them before submitting.
All Major AI Writing Tools Detected
Students use a wide range of AI tools to assist with academic writing. Our service can detect AI writing from any major language model — not just ChatGPT — because the underlying statistical detection approach works across all model families.
- ChatGPT (GPT-3.5, GPT-4, GPT-4o)
- Claude (Anthropic — all versions)
- Google Gemini (Pro and Ultra)
- Meta Llama (2 and 3)
- Mistral, Phi, Falcon and emerging models
Not sure which model was used? That does not matter — the tool can detect AI writing regardless of the source model, making it reliable even when the model is unknown.
AI writing — common indicators
Overuse of "comprehensive"
AI models frequently describe topics as "comprehensive", "multifaceted" or "nuanced" — an affectation rare in genuine student writing.
Perfect paragraph structure
Every AI paragraph has a topic sentence, supporting sentences, and a conclusion sentence. This machine-regular structure is statistically unusual in human writing.
No grammatical errors
Human writers make minor, natural errors. Flawless grammar throughout a long document — particularly for non-native speakers — is a notable AI signal.
The AI Writing Detection Score: 25 to 75
Every sentence in your document receives an individual score placing it on the spectrum from human to AI-generated.
25–35: Human Writing
Indicates authentic human writing with high perplexity and natural burstiness. Original arguments, personal observations and genuine student voice — nothing flagged when you detect AI writing at this score range.
40–55: Ambiguous Zone
May indicate AI-assisted writing, heavily formal academic prose, or non-native English academic style. Review these sentences in context.
65–75: AI Writing Detected
Strong AI-generation signals. When you detect AI writing at this score range, these sentences warrant revision before academic submission. The report highlights them clearly for easy identification.
Detect AI Writing — Transparent Pricing
Pay per page. No subscription. Minimum order $0.90.
Plagiarism Scan
Source comparison only
- 70+ billion sources
- Results in 15 minutes
- PDF with matched sources
- PlagAware powered
Combo: Plagiarism + AI
Most complete integrity check
- Plagiarism check included
- AI writing detection
- All major LLMs covered
- Best price per page
AI Scan
AI writing detection only
- ChatGPT, Claude, Gemini
- Score 25–75 per sentence
- Results in 15 minutes
- Email delivery
Detect AI Writing — Frequently Asked Questions
Institutions use dedicated AI detection tools that analyse the statistical properties of text — primarily perplexity and burstiness. These tools are different from plagiarism checkers: they do not compare text against a database but analyse the intrinsic patterns of the writing itself. Our PlagAware-powered tool uses the same approach at the sentence level.
Using our tool to detect AI writing before submission helps you identify and correct any AI-generated sections. However, compliance also depends on your institution's specific policies regarding AI use. Some institutions permit AI for certain tasks with disclosure; others prohibit it entirely. Always consult your institution's policy.
Academic institutions have adopted widely varying approaches. Some prohibit all AI use in assessed work. Some permit AI for research and editing but not for generating text. Some require disclosure of AI use. Policies are evolving rapidly. The safest approach is to check your institution's policy and, if in doubt, run a detection check on your paper.
Light paraphrasing — replacing a few words with synonyms — does not reliably remove AI detection signals. The statistical patterns used to detect AI writing (perplexity, burstiness, sentence structure) are properties of the whole sentence, not just individual word choices. Substantial rewriting can reduce AI scores, but most superficially paraphrased AI text remains detectable.
Our report scores each sentence from 25 (human) to 75 (AI-generated). A small number of high-scoring sentences in an otherwise human paper is often addressable by revising those specific passages. A large proportion of high-scoring sentences across the whole document indicates more substantial AI use that warrants comprehensive revision.
Detect AI Writing in Your Paper Before You Submit
Upload your document now to detect AI writing sentence by sentence — a complete analysis delivered in 15 minutes.
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