Side by side
| Feature | Copyleaks | Undetectable AI |
|---|---|---|
| What it does | Detects AI-generated and plagiarized text, images, and video, mainly for schools, publishers, and enterprises protecting content and IP. | Detects AI-generated text and images and rewrites AI writing so it reads as human, for students, writers and professionals. |
| Price from | 13.99 USD/mo | 5.00 USD/mo |
| Free plan | trial | trial |
| Platforms | web, chrome, api | web, chrome, api |
| API | yes | yes |
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
Undetectable AI: key features
- Detects AI-generated text and highlights suspicious sentences
- Humanizer rewrites AI text to read more naturally
- AI image detection for checking whether a picture is AI-made
- AI audio/voice detection
- Fake PDF detection
- Chrome extension that works inside Google Docs, Gmail and web pages
FAQ
Is Copyleaks or Undetectable AI better?
It depends on the job - compare prices, free plans and features in the table above.
Are Copyleaks and Undetectable AI free?
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. Undetectable AI: There is a free trial. Free trial limited to 250 words; additional usage requires a paid plan.