Polygraf AI Content Detector: Advanced Plagiarism & ChatGPT Detector icon

Polygraf AI Content Detector: Advanced Plagiarism & ChatGPT Detector

by Polygraf Inc. · polygraf.ai · Workflow & Planning
Established publisherManifest V3 in_app
View in Chrome Web Store Data as of 16 Oct 2026

Get Free Polygraf AI content detector with plagiarism checker to identify ChatGPT, Gemini, Mistral, Llama, Grammarly.

Users
1,000
0 in 30 days
Rating
4.4 / 5
unchanged in 30 days
Ratings
26
0 in 30 days
Store rank
#24K
#20K among extensions
Version
1.9.7
updated 11 Aug 2026

Users

monthly, 2 years
01,5003,000May 2024Aug 2025Oct 2026
Latest, 16 Oct 2026: 1,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 2 years
01326May 2024Aug 2025Oct 2026
Latest, 16 Oct 2026: 26 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Polygraf AI Content Detector: Advanced Plagiarism & ChatGPT Detector

Get Free Polygraf AI content detector with plagiarism checker to identify top AI models. Get instant content verification with the Polygraf AI Content Detector, now with exciting new features in our year-end update! This extension will help you to identify AI-generated text in real time and humanize, summarize your text directly within the tool. Whether you're an editor, writer, student, marketeer, or just a curious browser, Polygraf AI Content Detector Chrome extension lets you check the authenticity of your digital content everywhere you work. Upgrade to use advanced features. We've introduced some major upgrades: Fresh New Design: A sleek interface to make your workflow seamless. Scan Anything, Anywhere: Highlight text and click our yellow Polygraf icon for instant detection—it's always right where you need it. Text Editing Magic: Edit and scan text in one space, no more tab-hopping! For Standard/Premium Plan Holders: Instant Summaries: Get quick summaries for any text. Humanizer (Beta): Transform AI-generated text into natural, human-like content, ensuring it's ready for any authenticity checks. Polygraf remains the world's most detailed AI Content Detector, capable of identifying content generated by top AI models and with greater than 98% accuracy. It's the only detector that can distinguish Grammarly-enhanced text from AI-generated content, providing unmatched accuracy for professionals and students alike. Easy Installation: Click 'Add to Chrome' Pin the Polygraf AI Detector to your extension bar Log in using Google or Sign up with your email Highlight text and click the extension icon to start detecting with our ChatGPT and Plagiarism checker. Key Features: AI Checker Free Version: Enjoy robust detection capabilities at no cost with the free version of our AI detector, including features like the ChatGPT detector and Grammarly detection with monthly renewing limited tokens. AI Detection: Add Polygraf Google Chrome extension in seconds and use Polygraf AI Detection to identify Human or AI-generated content in real-time, including a precise ChatGPT detector for pinpointing AI-created text, and a plagiarism checker for identifying unoriginal content. Polygraf accurately shows ChatGPT, Claude, Gemini, Llama, and other gen-AI AI Source Detection: Patent-pending Polygraf AI Content Detector will tell you whether the content was artificially generated, enhanced by Grammarly, or created by specific AI models like ChatGPT, functioning as an effective plagiarism detector as well. Writing Style Analysis: Evaluates text on 6 parameters: Perplexity: measures text complexity. (Higher tends to be Human) Readability: indicates sentence structure complexity. Vocabulary richness: reflects word diversity. (Higher tends to be AI, especially if altered by Grammarly) Syntactic tree depth: assesses text predictability. (Higher tends to be AI) Average sentence length: shows typical word count per sentence. (Higher tends to be AI) Average word length: represents the average length of words used. (Higher tends to be AI) Unmatched Accuracy: Boasts over 98% accuracy with a minimal false positive rate. Versatile LLM Detection: Recognizes content generated by top AI models. Detailed Reports: Generates comprehensive reports to verify the originality of your content, leveraging both ChatGPT checker and plagiarism checker functionalities. Deception Filter (Web interface only): Detects intentional and unintentional text modifications aimed at deceiving AI models, such as empty spaces between words, deliberate grammatical errors, or alterations by Grammarly. Copyright Detector (Web interface only): Detects the original source of the content, providing URLs and exact sentence or phrase matches from the source, acting as a powerful plagiarism detector. How It Works: Polygraf AI uses proprietary AI protocols extensively trained on human and AI-generated content. Our real-time AI text detector can identify nuanced patterns in text to distinguish between human and AI authorship, even for Grammarly-enhanced text. Real-time Detector: Verifies content origins in real-time across multiple models. Probability Assessment: Provides insights into the origin, trustworthiness, and whether content was human-written or AI-enhanced. Forensic Linguistic Analysis: Traces machine-generated text back to its original source material. Intuitive Interface: Features easy-to-use dashboards, direct source links, and clear similarity percentages. Premium Features: Unlock the full potential of Polygraf with a premium subscription: AI Source Detector: Identify which AI tool (e.g., ChatGPT) created the content. Copyright Detector: Protect your work by identifying the original copyright holder. AI Highlighter: See exactly which parts of your content are AI-generated. Advanced Plagiarism Detector: Check for deeper plagiarism issues (web only). Website AI Analysis: Instantly verify AI usage on websites. Why Choose Polygraf? The Best Detection Accuracy: Our AI Detector boasts an impressive >98% accuracy rate in internal tests, setting a benchmark in the industry. Polygraf is trusted by government agencies and businesses worldwide for its ChatGPT detector and plagiarism detector capabilities. Unique Features: Did you know that Polygraf is the only AI detector that can tell if the content was enhanced by Grammarly or created by generative AI models like ChatGPT? This can be critical, protecting you against misinformation, propaganda, and claims of academic misconduct & copyright infringement with our advanced plagiarism checker. Trust & Data Security: We don't train our models on your data. This means we never store your information, making Polygraf a trusted, 100% secure AI Detector. Our ChatGPT detector, Grammarly detection, and plagiarism checker functionalities ensure your content remains original and credible. By integrating a powerful ChatGPT detector, plagiarism detector, and Grammarly detection, Polygraf stands out as a compr…

Growth

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7 days0+0.0%00.00
30 days0+0.0%00.00
6 months0+0.0%00.00
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Chrome Web Store search rankings

Where Polygraf AI Content Detector: Advanced Plagiarism & ChatGPT Detector appears when people search the store, with the 30 day change
Search phrasePosition30 days
ai capabilities#28+5
identify#45+16
copyright#51+4

Version history

59 versions recorded
1.9.711 Aug 2026
1.9.527 Jul 2026
1.9.48 May 2026
1.9.35 May 2026
1.9.24 May 2026
1.9.123 Apr 2026
1.9.014 Apr 2026
1.8.310 Oct 2025

Details

Category
Workflow & Planning
First seen
2 May 2024
Size
638 KB
Languages
en
Pricing
in_app
Privacy policy
polygraf.ai
Support
polygraf.ai
Extension ID
cbngnnhgfljncoliddifmkgklphlojnf

Permissions and risk

Moderate riskimpact 2, likelihood 2
Permissions
storageidentitycontextMenus

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