AI Plagiarism Checker: One Tool for Both Plagiarism & AI Detection
The Combo scan compares your paper against about 70 billion public sources, according to PlagAware, and assesses AI-typical phrasing. Neither check proves authorship. Save 33%, with results in about 15 minutes from $0.39/page.
This multifaceted issue requires careful consideration of...
Illustrative example, not an actual report. Source overlap and AI typicality are distinct, non-additive metrics.
Plagiarism Checking and AI Detection Address Different Risks
They're not the same tool. Running only one leaves a significant gap in your pre-submission check.
Plagiarism Check
Compares your text against known sources
- Detects verbatim copying from websites
- May find matching paraphrased passages
- Checks about 70 billion public sources
- Finds reuse of publicly available prior text
- Does not assess AI typicality
AI Detection
Analyses the statistical properties of text
- Assesses AI-typical phrasing
- Sentence-by-sentence scores
- No source match needed
- Assesses newly generated phrasing
- Does not identify source of copied text
Combo Plan: Both checks for $0.39/page
Save 33% vs ordering separately. One combined report.
How the AI Plagiarism Checker Works
Upload Your Paper
Submit .docx, .pdf, .txt or other formats. Files up to 50 MB. No registration required. Processed on German servers.
Dual Analysis Runs
The AI plagiarism checker runs both checks in parallel: plagiarism matching against about 70 billion public sources and AI detection analysis on every sentence.
Combined Report by Email
In about 15 minutes, receive a combined PDF report covering matched plagiarism sources and per-sentence AI scores (0 to 100). One document, two integrity checks.
AI Models and Detection Limits
The detector assesses AI-typical phrasing rather than identifying a particular model. Detection is not guaranteed for every model, version, or edited passage.
PCO has no model-specific validation for particular AI model versions.
ChatGPT & GPT-4
ChatGPT output may contain AI-typical expressions. The score does not identify an OpenAI model or version.
Claude & Gemini
Claude and Gemini output may contain AI-typical expressions, but detection is not guaranteed for every version.
Llama, Mistral & Others
Text from open-weight models can show AI-typical phrasing. See the LLM detector for detection limits.
What Your Report Shows
The Combo report delivers two types of findings in one document:
The plagiarism section shows passages matching publicly available sources, with source links. Reuse of your own work can be found only if the earlier text is publicly accessible.
PlagAware measures AI typicality from 0 to 100 for each sentence, with 50 neutral. Lower values indicate less AI-typical phrasing; higher values indicate more AI-typical phrasing. The score is not an authorship probability or proof of AI use.
- Plagiarism matches with source links
- Per-sentence AI scores (0 to 100)
- Colour-coded highlighting throughout
- Delivered by email in about 15 minutes
"The results indicate a significant correlation between..."
"This multifaceted issue requires careful consideration of..."
Illustrative example, not an actual report. Source overlap and AI typicality are separate, non-additive metrics.
Two Distinct Checks | One Price
No subscription. Pay per page. Minimum order $0.90.
Plagiarism Scan
Plagiarism check only
- About 70 billion public sources
- Results in 15 minutes
- PDF report with sources
- No AI detection
Combo: Plagiarism + AI
Public source matching and AI typicality.
- About 70 billion public sources, plagiarism check
- Sentence-level AI detection
- AI-typical phrasing analysis
- Combined report in 15 minutes
AI Scan
AI detection only
- AI-typical phrasing analysis
- Scores from 0 to 100 per sentence
- Results in 15 minutes
- No plagiarism check
AI Plagiarism Checker. Frequently Asked Questions
An AI plagiarism checker combines two distinct checks: a traditional plagiarism scan (comparing text against a database of sources to find copied passages) and an AI detection scan (assessing sentence-level AI-typical phrasing without proving authorship). Our Combo plan runs both at the same time and delivers a combined report.
They address different risks. Plagiarism checking finds source matches, while AI detection assesses language patterns. Neither a 0% similarity score nor low AI typicality proves originality. Use both reports as pre-checks, not complete coverage.
The Combo plan costs $0.39 per page (1,800 characters including spaces). It's 33% cheaper than ordering the two scans separately (each at $0.29/page = $0.58 combined). The minimum order is $0.90. There's no subscription. You pay only for the pages you scan.
You'll receive a combined report covering source matches and sentence-level AI typicality from 0 to 100, with 50 neutral. The AI score is not an authorship probability. Delivery is usually in about 15 minutes.
The detector assesses AI-typical phrasing rather than identifying a particular model. Detection is not guaranteed for every model, version, or edited passage.
Check for Both Plagiarism and AI Text. In One Scan.
Upload your paper and receive a report on public source matches and AI typicality in about 15 minutes. Combo plan saves 33%.