GPTZero
Detect AI-generated content with 99%+ accuracy
GPTZero is the industry-leading AI content detection platform that identifies whether text was written by AI models including ChatGPT, Claude, Gemini, and others using a proprietary seven-layer detection model.
Built on perplexity and burstiness analysis, GPTZero offers best-in-class accuracy backed by independent benchmarking. The platform serves educators, publishers, and organizations with tools ranging from a Chrome extension to batch file uploads and LMS integrations for Canvas and Google Classroom.
GPTZero also provides a developer API with ready-to-use code in 17 programming languages, making it easy to integrate AI detection into any platform or workflow.
Pricing Plans:
- Free: $0 – 10,000 words/month, 3 advanced scans, Chrome extension with 5 AI highlights
- Premium: $12.99/month (billed annually) – 300,000 words/month, batch file uploads, full Chrome extension access
- Professional: $24.99/month (billed annually) – 500,000 words/month, up to 10M words overage, enterprise-grade security, LMS integration
- Enterprise/Team: Contact sales – shared team credits, unified billing, custom LMS integration
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, Claude, Gemini, and other AI models
- Chrome Extension: Highlight AI-generated content directly in your browser
- Batch File Upload: Scan multiple documents at once for efficient bulk analysis
- LMS Integration: Direct integration with Canvas and Google Classroom for educational institutions
- Developer API: Powerful API with ready-to-use code in 17 programming languages (Node.JS, Python, and more)
- Advanced Scans: Deep analysis mode for higher-confidence detection results
- Enterprise Security: SOC 2 compliance and enterprise-grade data handling
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 across all major AI language models including ChatGPT, Claude, and Gemini
- Generous free tier with 10,000 words/month for basic detection needs
- Developer API available with code samples in 17 languages—strong integration ecosystem
- Chrome extension provides real-time AI detection while browsing
- LMS integrations for Canvas and Google Classroom ideal for educational use
- Enterprise-grade security with team billing and shared credits
Cons ❌
- Primarily English-focused with limited accuracy for non-English content analysis
- Potential false positives especially with formal or procedural writing styles
- Advanced scans limited to 3 per month on free plan
- No MCP server integration available for AI development workflows
- Word limits on all plans—heavy users may need to monitor usage carefully