Side by side
| Feature | ZeroGPT | Undetectable AI |
|---|---|---|
| What it does | Online AI content detector that flags AI-written text and images, plus paraphrasing, grammar and plagiarism tools for writers, students and educators. | Detects AI-generated text and images and rewrites AI writing so it reads as human, for students, writers and professionals. |
| Price from | not listed | 5.00 USD/mo |
| Free plan | yes | trial |
| Platforms | web, api, whatsapp, telegram | web, chrome, api |
| API | yes | yes |
ZeroGPT: key features
- Sentence-level highlighting of AI-written text with an AI percentage gauge
- Downloadable PDF report for each detection
- AI Humanizer for rewriting AI text
- Plagiarism checker across billions of sources
- Paraphraser, summarizer, grammar checker and translator
- AI image and video detection
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 ZeroGPT or Undetectable AI better?
It depends on the job - compare prices, free plans and features in the table above.
Are ZeroGPT and Undetectable AI free?
ZeroGPT: Yes, there is a free plan. Free plan, no credit card needed, with limited access to the tools (the 15,000-character limit shown on the homepage applies to the detector input). Undetectable AI: There is a free trial. Free trial limited to 250 words; additional usage requires a paid plan.