
GPTZero
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GPTZero
AI text detector. Identify ChatGPT or Gemini content, verify originality, and detect plagiarism or hallucinations with high precision.
General Information about GPTZero
GPTZero is an advanced AI content detection tool designed to accurately identify text generated by large language models (LLMs) such as ChatGPT, GPT-4, Gemini, Claude, and Llama. With a user base of over 10 million and the trust of thousands of educational institutions, it has established itself as an essential technical solution for verifying authenticity and human writing in digital documents.
The platform's technology is built on a proprietary model consisting of seven components that process text through multiple layers. Its analysis focuses on key factors such as perplexity, which measures language predictability, and burstiness, which evaluates sentence structure and rhythm. Thanks to this approach, the system achieves 99% accuracy in content classification, minimizing false positives and reliably detecting mixed documents where human-written and AI-generated paragraphs coexist.
Key features and practical benefits include:
- Advanced scanning: Allows for the analysis of long-form text and files, highlighting specific AI-generated sentences through color coding.
- Writing Replay: Provides video proof of the writing process in Google Docs, allowing users to observe typing patterns and rule out the heavy use of copy-paste functions.
- Plagiarism detector: Verifies content originality by comparing it against external sources to ensure proper attribution has not been omitted.
- Hallucination detector: Helps identify potentially false or inaccurate claims generated by AI models.
- AI Tutor: Provides constructive feedback to improve writing quality and encourage responsible writing habits.
The tool is highly accessible from any computer via its web interface, where users can paste text or upload files directly from Google Drive. To optimize workflow, it features a Chrome browser extension and integrates natively into learning management systems (LMS) like Canvas and Google Classroom, facilitating its adoption in the field of academic integrity.
GPTZero supports multiple languages, including Spanish, French, and German. Additionally, it stands out for its ability to mitigate bias in texts written by English as a Second Language (ESL) speakers, ensuring fair and accurate results. It is a versatile solution for educators, editors, recruiters, and marketing professionals who need to guarantee that every word in their documents is authentic and high-quality.
Features and Use Cases of GPTZero
How GPTZero Works
Frequently Asked Questions about GPTZero
What is GPTZero?
It is a leading AI detector designed to identify content generated by language models like ChatGPT or Gemini in text and documents.
How accurate is GPTZero at detecting text?
The tool boasts a ninety-nine percent accuracy rate according to independent testing and is optimized to minimize false positives.
Can GPTZero detect content from models other than ChatGPT?
Yes, the system is capable of analyzing text from a wide range of models, including GPT-4, Gemini, Claude, Llama, and DeepSeek.
What languages does the detector currently support?
GPTZero offers full support and high accuracy in English, Spanish, French, German, and Portuguese, though it is used in more than one hundred different countries.
Can GPTZero be integrated with Google Docs?
Yes, there is a free Chrome extension that allows you to use the detector and the Writing Replay feature directly within Google Docs.
What is the GPTZero Writing Replay feature?
It is a tool that allows you to visualize the writing process through a video to prove that the text was naturally written by a human.
Does the platform include a plagiarism checker?
Yes, in addition to AI detection, the tool allows you to check content originality and determine if it has been copied from external sources without attribution.
Who is GPTZero intended for?
It is primarily designed for educators, students, editors, recruiters, and any professional who needs to verify the authenticity and quality of written text.
How can I start using GPTZero?
You can get started by pasting text directly onto the website or by uploading files from your computer or Google Drive for an immediate scan.
GPTZero Pricing
Free Plan
- Price: 0 $
- Up to 10,000 characters per scan.
- Access to the Chrome extension and Google Docs add-ons.
- Basic AI-generated content detection.
Premium Plan
- Price: $12.99 per month (billed annually) or $23.99 per month (billed monthly).
- Up to 300,000 words per month.
- Advanced AI Scan.
- Multilingual AI detection.
- Option to download detailed AI reports.
Professional Plan
- Price: $24.99 per month (billed annually) or $45.99 per month (billed monthly).
- Up to 500,000 words per month.
- Includes all Premium plan features.
- Batch scan up to 250 files simultaneously.
- Page-by-page document scanning.
- Enterprise-grade security and Learning Management System (LMS) integration.
- Option to exceed the limit by up to 10 million additional words.
GPTZero Screenshots

