GPTZero
Detect AI-generated content with 99%+ accuracy
GPTZero is the leading AI detection tool that identifies AI-generated content from ChatGPT, GPT-4, Gemini, and Claude using advanced seven-layer detection technology with perplexity and burstiness analysis — trusted by over 8 million users including educators, journalists, and organizations worldwide.
With GPTZero, you can analyze text at sentence, paragraph, and document levels using specialized algorithms trained on human and AI-generated content, access detailed writing reports with video replay features, and integrate detection capabilities through Chrome extensions, APIs, and LMS platforms.
This makes it ideal for educators detecting AI use in student work, content creators verifying originality, hiring managers screening authentic responses, and organizations maintaining content integrity and academic standards.
Pricing:
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- Basic Plan: Free - 10,000 words/month, 7 scans per hour, GPTZero dashboard access, Origin Chrome extension, basic AI detection.
- Essential Plan: $14.99/month ($8.33/month annually) - 150,000 words/month, premium AI detection models, batch file scanning (10 files), no plagiarism scanning.
- Premium Plan: $23.99/month ($12.99/month annually) - 300,000 words/month, plagiarism scanning, writing feedback, all Essential features, team collaboration.
- Professional Plan: $45.99/month ($24.99/month annually)- 500,000 words/month, advanced features, API access, organizational tools, priority support.
Tool Summary
| Value Rating | ★★★★★ (5/5) |
| Price Tier | Freemium |
| Cost | $ (1/5) |
| Category | AI Plagiarism Detection Tools |
Features
- Seven-layer AI detection model using perplexity and burstiness analysis for maximum accuracy
- Multi-model compatibility detecting content from ChatGPT, GPT-4, Gemini, Claude, and LLaMA models
- Human Writing Reports with video replay showing real-time writing process verification
- Sentence-level highlighting identifying specific AI-generated portions within mixed content
- Chrome extension "Origin" enabling one-click page scanning and real-time detection
- Plagiarism detection checking content originality across billions of sources (Premium+)
- LMS integrations with Canvas, Moodle, Google Classroom, and Microsoft Word
- Batch file processing for analyzing multiple documents simultaneously
- API access for custom integrations and automated workflows
Common Use Cases
- Educational Institutions: Detect AI use in student assignments while promoting responsible AI adoption
- Content Publishers: Verify authenticity of submitted articles, blogs, and editorial content
- Hiring and Recruitment: Screen job applications and interview responses for genuine human writing
- Academic Research: Ensure research paper integrity and verify citation authenticity
- Legal and Compliance: Authenticate documents and detect AI-generated content in legal proceedings
- Social Media Platforms: Identify and flag AI-generated posts, comments, and disinformation campaigns
Pros ✅
- Industry-leading accuracy with independent benchmarking showing best-in-class performance
- Comprehensive detection coverage across all major AI language models and platforms
- Educational focus specifically fine-tuned for student writing and academic prose
- Transparent results providing detailed explanations rather than just numerical scores
- Strong integration ecosystem with major educational and productivity platforms
- Excellent free tier offering 10,000 words monthly without credit card requirement
- Student-founded mission focused on responsible AI adoption rather than punitive measures
- Continuous improvement with regular updates and model refinements based on latest AI research
Cons ❌
- Primarily English-focused with limited accuracy for non-English content analysis
- Potential false positives especially with formal or procedural writing styles
- Premium features required for plagiarism detection and advanced reporting capabilities
- Processing time limitations with hourly scan restrictions on free and basic plans
- Document length sensitivity with accuracy improving for longer text samples
- Mixed content challenges occasionally struggles with heavily edited or paraphrased AI content
- Subscription costs can accumulate for organizations requiring high-volume scanning
Affiliate Disclosure
This site contains affiliate links. If you click on one and make a purchase, I may earn a small commission at no additional cost to you. As an affiliate, I only recommend products and services I genuinely use or believe in. This disclosure is in accordance with the Federal Trade Commission's guidelines on endorsements and testimonials.
This site contains affiliate links. If you click on one and make a purchase, I may earn a small commission at no additional cost to you. As an affiliate, I only recommend products and services I genuinely use or believe in. This disclosure is in accordance with the Federal Trade Commission's guidelines on endorsements and testimonials.