GPTZero

Overview

GPTZero is an AI text detection tool for education and content review scenarios, used to determine whether text may have been generated by an AI model. It supports analysis of sentences, paragraphs, and entire documents, helping users distinguish between human writing and AI-generated content. The objects it can currently detect cover text generated by mainstream models such as ChatGPT, the GPT series, Gemini, Claude, and Llama.

The platform provides web-based text paste detection and also supports uploading documents for scanning, giving an overall AI probability result as well as sentence-by-sentence analysis. In addition to basic detection, GPTZero also provides capabilities such as plagiarism checking, writing feedback, and educational institution integrations, making it suitable for teachers, students, editors, publishers, and content review teams.

Key Features

• AI text detection: Determines whether content is closer to human writing or AI-generated output by analyzing text characteristics.
• Sentence-by-sentence and paragraph-by-paragraph analysis: It not only provides an overall result, but also marks specific sentences or paragraphs that may have been generated by AI.
• Multi-model detection support: Can identify text generated by models such as ChatGPT, GPT-5, Gemini, Claude, and Llama.
• Document upload and batch scanning: Supports uploading multiple text file formats and can perform batch detection.
• Plagiarism checking: Some versions provide originality checking features for discovering unattributed citations or copied content.
• Education scenario features: Provides dedicated capabilities for teachers and schools, which can be used for reviewing academic content such as assignments and papers.
• Browser and writing tool integrations: Supports writing scenarios such as Google Docs, making it convenient to detect content directly during daily editing.
• Writing feedback and reports: In addition to detection results, it also provides a certain degree of writing quality feedback and auxiliary analysis.

Pricing

According to public information, GPTZero offers a free version and paid versions:

• Free basic version: Can detect about 10,000 words per month and supports batch scanning of up to 10 files.
• Paid starter version: About $10/month, can detect about 150,000 words per month, and supports batch scanning of up to 10 files.
• Paid advanced version: About $16/month, can detect about 300,000 words per month, and supports higher quotas or unlimited batch file scanning.

Specific plan benefits and prices may change with updates on the official website. Please refer to the official page for the latest information.

Frequently Asked Questions

Who is GPTZero suitable for?

It is suitable for teachers, students, editors, media organizations, recruiting teams, and business users who need to review the authenticity of text.

What input methods does GPTZero support?

Users can usually paste text directly for detection, and can also upload files in formats such as PDF, Word, and TXT.

Can GPTZero determine AI content with complete accuracy?

GPTZero provides detection results based on text characteristics and can be used as an auxiliary judgment tool, but it should not replace human review, especially in academic or formal review scenarios where comprehensive judgment should be made in combination with context.

What are GPTZero's core application scenarios?

It is commonly used in scenarios such as education assignment review, paper and publishing content review, media submission screening, recruitment document evaluation, and internal corporate text compliance checks.