AI Content Analysis Tool
What is GPTZero and how does it work?
GPTZero is a leading AI content detector that identifies whether text was generated by large language models (LLMs) such as ChatGPT, GPT-4/5, Gemini, Claude, and more. It analyzes text at sentence, paragraph, and document levels using a proprietary multi-component model (seven components) to predict AI authorship, and it provides an AI-detection score with highlighted phrases. It also offers features to confirm authenticity, such as video replay of the writing process and detailed reporting.
How accurate is GPTZero in detecting AI-generated text?
GPTZero has demonstrated high accuracy in independent benchmarks. Key points include:
- 99% accuracy in distinguishing AI-generated text from human writing in major evaluations.
- Ability to reliably detect “mixed” documents (where human and AI writing are combined) with about 96.5% accuracy.
- RAID benchmarks show strong performance with low false positives, and results improve when focusing on modern models like GPT-4.
- GPTZero emphasizes de-biasing for ESL writers, aiming to minimize false positives in that cohort.
Can GPTZero verify real human writing?
Yes. GPTZero supports video replay of the writing process and human writing verification to attest to authentic authorship. It also provides writing reports with granular insights into the composition process, helping stakeholders verify human-written content.
How do I use GPTZero’s AI detection tool?
Getting started is simple:
- Paste text or upload a document and press Scan.
- For scans over 10,000 characters, you’ll need to create a free account first.
- View results, including the estimated AI-generated percentage and highlighted phrases.
- You can also use the Chrome extension for Google Docs and the web to view AI-detection metrics on pages.
Which AI models can GPTZero detect?
GPTZero detects content from a wide range of AI models, including ChatGPT, GPT-4, GPT-5, Gemini, Claude, Llama, Deepseek, and other models built on similar architectures.
Which languages does GPTZero support?
GPTZero fully supports English, German, Portuguese, French, and Spanish with strong accuracy. It is used in many other languages across more than 100 countries.
What features does GPTZero offer beyond AI detection?
Beyond AI detection, GPTZero includes:
- Writing Replay (video proof of the writing process)
- Advanced AI Scan
- Plagiarism Checker
- Writing Feedback
- Video proof of the writing process
- AI Tutor (custom writing feedback)
- Grammar Checker
- Authorship Verification
- AI Grader
What integrations and platforms are supported?
GPTZero integrates directly with the tools you use daily, including:
- Chrome
- Google Docs
- Classroom
- Canvas
- Zapier
- API
It also supports LMS integration for classroom use.
Can GPTZero detect mixed human/AI writing?
Yes. GPTZero can identify mixed documents (where human and AI writing are combined) with high accuracy—about 96.5% in relevant evaluations.
What are the pricing plans and word quotas?
- PREMIUM: $12.99/month, billed annually (or $23.99 if billed monthly) with 300,000 words per month. Includes Advanced AI Scan, multilingual AI detection, and downloadable AI reports.
- PROFESSIONAL: $24.99/month, billed annually (or $45.99 monthly) with 500,000 words per month. Includes all Premium features plus up to 10 million words overage, scan up to 250 files at once, page-by-page scanning, and enterprise-grade LMS integration.
Additional features and plan details are available when choosing a plan.
Is there a free account or trial, and how do I get started?
Yes. You can get started for free. For scans over 10,000 characters, a free account is required first. The site offers a free onboarding path to begin using GPTZero.
Who is GPTZero for?
GPTZero is trusted in education for teachers and students and is used in thousands of colleges and institutions. It also serves publishers, recruiters, copywriters, marketers, and businesses where authentic and high-quality writing matters.
How can I schedule a demo or get GPTZero integrated in my LMS?
You can schedule a demo to see GPTZero in action. GPTZero provides LMS integrations (including Canvas and Google Classroom) and offers integration options via the listed platforms (Chrome, Google Docs, Classroom, Canvas, Zapier, API).
What are the limitations of GPTZero detectors?
No AI detector is 100% accurate, and AI itself evolves. Results should not be treated as the final verdict. Accuracy improves with longer inputs (document-level results are stronger) and is strongest on English prose. GPTZero emphasizes reducing false positives for ESL writers and continually trains its model to improve performance while monitoring training data for bias.
Can I download AI detection reports?
Yes. The Professional plan includes capabilities to download AI reports, and reporting is available as part of GPTZero’s detection features across applicable plans.
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