Overview
GPTZero is the leading AI detector for checking whether a document was written by a large language model such as ChatGPT. It detects AI on sentence, paragraph, and document level.
AI Detection
Detects AI-generated text on sentence, paragraph, and document level.
Sentence-by-Sentence Highlighting
Highlights sentences where AI-generated text is detected.
Multi-Language Support
Works with multiple languages, including English, Spanish, French, and more.
High Accuracy
Verified by multiple independent sources as the most accurate AI detector across use-cases.
Get started
- Open the official website and confirm the service is available in your region.
- Check the current plan, usage limits and terms for your intended use.
- Try a small task with sample data before committing to a paid plan.
Editorial note
Pricing checked: Sep 20, 2026. Tiered plans available. Review current pricing and subscription options on the official website.
Record updated: Sep 20, 2026
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