Free AI Detector &
Plagiarism Checker
Plagly.ai is a FREE plagiarism and AI content detection tool that helps you keep your work 100% original and trustworthy. Instantly check for copied or AI-generated text, analyze writing style, and get detailed insights to protect content integrity. Perfect for students and teachers, writers, and professionals, Plagly.ai makes it easy to verify originality, avoid accidental plagiarism, and publish authentic content with confidence.
Try AI Detection Free
No signup neededTrusted by educators, writers, and teams worldwide
AI Detection, Plagiarism Detection & Analytics. Go beyond basic checkers
Sentence-level signals, source matches, and confidence scores—clearly visualized. Learn more about how our detection works.
Our advanced detection algorithms provide comprehensive analysis of content authenticity through multiple layers of verification. Unlike basic plagiarism checkers, Plagly.ai combines sophisticated AI detection models with extensive database matching to identify both AI-generated content and traditional plagiarism. Our platform analyzes linguistic patterns, semantic structures, and contextual markers to deliver detailed reports that help maintain academic integrity and content originality across educational institutions, publishing houses, and enterprise environments.
Detect AI Content & Humanize It
Ensure that your text is indistinguishable from human writing while retaining its original meaning with our AI Detector and Humanizer tool.
Our AI detection technology identifies content generated by ChatGPT, GPT-5.5, Claude Opus 4.6, Gemini 3.1, and other major language models with 99% accuracy. Once detected, our humanization engine transforms AI-generated text into natural, human-like writing that maintains the original message while improving readability, flow, and authenticity. This powerful combination helps content creators, students, and professionals ensure their work meets the highest standards of originality and natural expression.
Try AI Text HumanizerDetect Content From Any AI Model
Purpose-built detectors tuned for today's leading models. Pick the AI you want to catch.
Plagiarism Detection
Uncover uniqueness using our efficient plagiarism detector. Guarantee the originality of your content with our advanced detection technology!
Plagiarism DetectionAI Chat with Document
Get answers to all your questions, conduct deep research, and create unique content—all grounded in the information inside your documents.
- Chat with PDF, DOC, or TXT files
- Backed by real-time data
- Built in Prompt Improver
Why Choose Plagly.ai for Content Verification?
Advanced AI Detection Technology
Plagly.ai employs state-of-the-art machine learning algorithms specifically trained to identify AI-generated content from the most popular language models including OpenAI's GPT series, Google's Gemini, Anthropic's Claude, and Meta's LLaMA. Our detection system analyzes multiple linguistic features including sentence structure, vocabulary patterns, semantic coherence, and stylistic markers that distinguish AI-generated text from human writing. Learn more about our technology.
The accuracy of our AI detection reaches 99% across various content types, making it the most reliable solution for educational institutions, publishing houses, and enterprise environments where content authenticity is paramount. Our algorithms are continuously updated to stay ahead of evolving AI models and detection evasion techniques.
Comprehensive Plagiarism Detection
Beyond AI detection, Plagly.ai provides extensive plagiarism checking capabilities that scan billions of web pages, academic databases, and published works to identify potential instances of copied content. Our database includes academic journals, books, websites, and other sources to ensure comprehensive coverage across all domains of knowledge. View our pricing plans for unlimited access.
Our plagiarism detection engine provides detailed reports showing exact matches, similarity percentages, and source citations, enabling users to understand the extent of any potential issues and take appropriate corrective action. This feature is essential for maintaining academic integrity and ensuring original content creation. View our pricing plans.
Industry-Leading Accuracy and Reliability
Plagly.ai has been independently tested and verified by academic researchers and industry experts, consistently achieving the highest accuracy rates in content authenticity detection. Our false positive rate remains below 0.4%, ensuring that legitimate human-written content is not incorrectly flagged as AI-generated.
The platform processes over 200 million documents annually, demonstrating its scalability and reliability across diverse use cases. Our technology has been adopted by leading universities, publishing companies, and enterprise clients who require the highest standards of content verification.
User-Friendly Interface and Detailed Reporting
Plagly.ai combines powerful detection capabilities with an intuitive user interface that makes content verification accessible to users of all technical levels. Our detailed reports provide clear visualizations of detection results, including sentence-level analysis, confidence scores, and actionable recommendations for content improvement.
The platform supports various file formats including PDF, Word documents, and plain text, making it easy to analyze content from multiple sources. Our API integration capabilities allow seamless integration with existing workflows and content management systems.
Trusted by Leading Organizations Worldwide
Plagly.ai serves thousands of users across educational institutions, publishing companies, content agencies, and enterprise organizations. Our platform helps maintain the highest standards of content authenticity and academic integrity in an era where AI-generated content is increasingly prevalent.
From students ensuring their academic work meets originality requirements to enterprises protecting their brand reputation through authentic content creation, Plagly.ai provides the tools and insights needed to navigate the evolving landscape of content creation and verification.
Advanced Plagiarism and AI Detection
Advanced graph-based models that set new standards in accuracy and reliability
Revolutionary AI Detection Technology
Graph-based models that capture complex relationships in text structure and semantics
Multi-model detection covering ChatGPT, GPT-5.5, Claude Opus 4.6, Gemini 3.1, and Llama 4
Academic collaboration with researchers and industry experts
7 AI Experts Review Your Document Together
Our Agentic Council puts your work through a rigorous multi-expert review — like having 7 professors debate your paper in real-time.
Expert Panel
Live Debate
Multi-Pass Analysis
Each expert does an initial scan, then a deep investigation. Issues others miss get caught.
Real Expert Debate
Agents challenge each other's findings. Disagreements are resolved through evidence, not averaging.
Professional Report
Get an executive summary, weighted scores, fact-checks, and actionable recommendations.
Starting at $6.99/mo
Choose Your Plan
Start with our free plan or upgrade for more features
Free
Basic analysis with limited words
- 800 words per month
- Basic plagiarism check
- AI content detection
- Reference analysis
Basic
Standard analysis for regular users
- 50.0K words per month
- All Free features
- Comprehensive analysis
- Priority support
Pro
Advanced analysis for professionals
- 200.0K words per month
- All Basic features
- Advanced AI models
- Bulk processing
- advanced features
Frequently Asked Questions
Everything you need to know about Plagly.ai, accuracy, and pricing.
We flag statistical AI-watermark patterns
During analysis, Plagly surfaces the low-entropy statistical signature that token-level watermarks (Claude's August 2026 mark, Google SynthID) amplify — an honest indicator, not vendor verification. You can also strip or rewrite watermarked text with our dedicated tool.
Open the AI Watermark Detector & Remover