AI Checker — Detect AI Writing & Plagiarism
Detect ChatGPT, Gemini, Claude and plagiarism in your academic paper. Sentence-by-sentence AI analysis plus 70B+ source plagiarism scan. PDF report in 15 minutes from just $0.29/page.
What Is an AI Checker?
An AI checker is a tool that combines two complementary forms of academic text analysis: AI writing detection and plagiarism detection. The AI detection component analyses statistical properties of text — specifically perplexity (predictability of word choices) and burstiness (sentence length variation) — to identify content generated by ChatGPT (OpenAI), Claude (Anthropic), Gemini (Google), or other large language models. The plagiarism component compares text against a database of existing sources to identify copied, paraphrased, or self-plagiarised content.
Our AI checker is powered by PlagAware, the professional detection engine used by universities across Europe. It checks against 70+ billion sources including academic journals, theses, and websites, and scores every sentence individually on a 25–75 AI scale. Research published in Science Advances (Liang et al., 2024) confirms that leading AI detectors of this class achieve above 90% accuracy on unedited AI-generated text.
What the AI Checker Analyses
- AI authorship: ChatGPT, Claude, Gemini, Llama & more
- Plagiarism: 70B+ sources, including academic journals
- Sentence-level AI score (25 = human, 75 = AI)
- Paraphrase & self-plagiarism detection
- Colour-coded PDF report delivered in 15 minutes
How the AI Checker Works
Three steps to your AI detection and plagiarism report, delivered to your inbox within 15 minutes.
Upload Your File
Upload your paper as PDF, DOCX, DOC, or TXT — up to 50 MB. We extract the text automatically and calculate the number of standard pages.
AI Checker Scans Your Text
Our AI checker analyzes every sentence for AI-generated patterns. It also runs a full plagiarism scan against 70+ billion sources including websites, journals, and academic papers.
Report by Email
You receive a detailed PDF report by email — with all matches highlighted by color, percentage score, and direct links to every original source.
What Is an AI Checker?
An AI checker is a tool that analyzes your text to determine whether it was written by a human or generated by artificial intelligence. It identifies content from models like ChatGPT, Gemini, Claude, and other large language models with sentence-level precision.
Our AI checker goes beyond simple detection. It also includes a full plagiarism scan powered by PlagAware, searching over 70 billion sources for copied content, paraphrases, and self-plagiarism. This makes it the most complete academic integrity tool available.
You receive a comprehensive PDF report in as little as 15 minutes. Every sentence gets its own AI probability score, and every plagiarism match links directly to the original source.
What the AI Checker Detects
Our AI checker identifies AI-generated text and three types of plagiarism. Each finding is highlighted in a different color in your PDF report.
Direct Plagiarism
Text copied word-for-word from another source without citation. Highlighted in red in the report with a direct link to the original source.
Paraphrase Plagiarism
Ideas taken from a source and reworded without proper citation. Highlighted in yellow — the structure matches even when exact wording differs.
Synonym & Self-Plagiarism
Replacing key words with synonyms to disguise copied text, or reusing your own previously submitted work without disclosure. Highlighted in orange.
Choose Your Scan
Plagiarism check, AI detection, or both — select the right package for your paper.
Plagiarism Scan
Plagiarism check with 70B+ sources
Min. order $0.90 (3 pages)
- 70B+ sources searched
- Results in 15 minutes
- PDF report with source links
- Paraphrases & synonyms detected
Combo: Plagiarism + AI
Plagiarism check and AI detection together
Min. order $1.17 (3 pages)
- Everything from Plagiarism Scan
- AI detection sentence by sentence
- Detects ChatGPT, Gemini & more
- Best value per page
AI Scan
AI content detection sentence by sentence
Min. order $0.90 (3 pages)
- Checks every sentence individually
- Scale: 25 (human) to 75 (AI)
- Results in 15 minutes
- All major LLMs detected
SSL encrypted · GDPR compliant
Why Choose Our AI Checker?
We combine AI detection with university-grade plagiarism checking in one tool, accessible to every student from just $0.29 per page.
University-Grade Software
We use PlagAware — the same detection engine trusted by 11+ universities. Your professors use this exact standard.
70+ Billion Sources
Free tools check ~1 million sources. We check 70 billion — websites, academic journals, student repositories, and published books.
Results in 15 Minutes
Most scans are delivered by email within 15 minutes of upload — fast enough to make corrections before your deadline.
GDPR-Compliant & Secure
Your document is processed securely in Europe and never stored in any database. SSL-encrypted. Your work stays yours — always.
AI Checker — Frequently Asked Questions
Everything you need to know about our AI checker and plagiarism detection service.
An AI checker detects text generated by artificial intelligence models like ChatGPT, Gemini, or Claude. Our AI checker analyzes every sentence individually and assigns a confidence score. It also includes a full plagiarism scan against 70+ billion sources, making it a complete academic integrity solution.
In most cases, your plagiarism report arrives by email within 15 minutes of uploading your file. For very long documents (200+ pages), it may take a bit longer. You will receive a PDF report that you can open immediately and, if needed, share with your academic supervisor.
An AI Scan costs $0.29 per standard page (1,800 characters including spaces). The minimum charge is $0.90. The Combo package (AI + Plagiarism Scan) costs $0.39/page, saving 33% compared to booking each scan individually. Use code ai-checker10 for an additional 10% off.
No registration is required. You simply upload your file, choose your scan type, enter your email address, and pay — all without creating an account. Your report is sent directly to the email address you provide.
We accept PDF, DOCX, DOC, and TXT files up to 50 MB in size. For best results, export your document directly from your word processor. Scanned PDFs without selectable text (non-OCR) cannot be processed. If you are unsure, we recommend exporting as DOCX or PDF with text layers.
Absolutely. Your uploaded document is used exclusively for the plagiarism check and is not stored in any external database or shared with third parties. All data is processed in compliance with GDPR. For full details, please read our Privacy Policy.
Ready to Check Your Paper?
Professional plagiarism check and AI detection — from €0.29/page, results in 15 minutes.
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