Side by side
| Feature | GPTZero | Resemble AI |
|---|---|---|
| What it does | Free AI detector that scores text for AI-generated content, sentence by sentence, for educators, students and writers. | Real-time detection of AI-generated audio, video and images, plus watermarking, for enterprises fighting deepfake fraud. |
| Price from | not listed | 1,000 USD/mo |
| Free plan | yes | trial |
| Platforms | web, chrome, api | web, api, chrome, windows |
| 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
Resemble AI: key features
- Real-time deepfake detection for audio, video and images
- Explainable, human-readable detection results
- C2PA provenance and watermarking
- Voice enrollment and identity matching
- Meetings protection on major platforms
- Chrome extension for browser-based checks
FAQ
Is GPTZero or Resemble AI better?
It depends on the job - compare prices, free plans and features in the table above.
Are GPTZero and Resemble AI 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. Resemble AI: There is a free trial. Flex plan: no subscription fee, pay for credits as you go, platform and API access, no credit card needed to start.