Side by side
| Feature | GPTZero | Copyleaks |
|---|---|---|
| What it does | Free AI detector that scores text for AI-generated content, sentence by sentence, for educators, students and writers. | Detects AI-generated and plagiarized text, images, and video, mainly for schools, publishers, and enterprises protecting content and IP. |
| Price from | not listed | 13.99 USD/mo |
| Free plan | yes | trial |
| Platforms | web, chrome, api | web, chrome, api |
| API | yes | yes |
GPTZero: key features
- Overall AI score with sentence-by-sentence detection
- Detection of text from ChatGPT, GPT-5, Gemini, Claude and Llama
- Writing replay showing the typing process and copy-paste activity
- Plagiarism checker
- Grammar check and writing feedback
- Chrome extension and Google Docs integration with Canvas and Google Classroom
Copyleaks: key features
- AI text detection covering ChatGPT, Gemini, DeepSeek and Claude
- Plagiarism checker with search across websites, journals, and internal documents
- AI image and AI video detection
- Browser extension for Chrome, Edge, and Firefox
- Google Docs add-on and LMS integration
- API integration for enterprise workflows
FAQ
Is GPTZero or Copyleaks better?
It depends on the job - compare prices, free plans and features in the table above.
Are GPTZero and Copyleaks free?
GPTZero: Yes, there is a free plan. Free basic AI detection by pasting text into the scanner; the homepage advertises it as free. Paid features are not detailed in the provided text. Copyleaks: There is a free trial. Free start for students (Start for Free / Start now for free); scan credits are limited on the individual plans.