Pricing
- 10,000 words per month
- Basic AI Scan
- 3 Free Advanced Scans
- 5 Free AI Highlights in Chrome Extension
- 300,000 words per month
- Advanced AI Scan
- Multilingual AI detection
- Download AI reports
- AI Highlights in Chrome Extension
- 500,000 words per month
- All of Premium
- Up to 2 million words overage
- Scan up to 250 files at once
- Page by page scanning
Pricing from the official site, verified Jun 2026. Always confirm current prices on the vendor site.
Pros & cons Listof.Best analysis
Pros
- Sentence-level AI detection analysis
- Overall score plus granular breakdown per passage
- Integrates with Google Docs, Canvas, and Zapier
- Free tier and API both available
Cons
- Paid plans start at $12.99/month
- Accuracy varies with shorter or heavily edited texts
- Mobile app may lack full feature parity
What users say Editorial summary
GPTZero is commonly used by educators and academic institutions to evaluate whether student submissions were generated by AI tools. A frequently noted strength is the sentence-level breakdown, which identifies specific passages rather than returning only a single overall verdict. A common limitation is that heavily edited or paraphrased AI text can reduce detection confidence, and full feature access requires a paid subscription.
Editorial summary based on public information — Listof.Best does not yet have enough verified user reviews to show a rating.
Best for: Educators and institutions checking submissions for AI-generated content
GPTZero vs AI Detector
| GPTZero | AI Detector | |
|---|---|---|
| Pricing | Free | Freemium |
| Price from | $12.99/mo | $7.99/mo |
| Free tier | Yes | Yes |
| API | Yes | No |
| Open source | Yes | No |
| Platforms | Mobile App | Browser Extension |
| Models | Gptzero | Zerogpt |
| Context window | 32k | 128k |
| Launched | 2025 | 2022 |
| Languages | English, German, Portuguese +2 more | — |
| Integrations | Google Docs, Google Classroom, Canvas +1 more | — |
| Output formats | — |
Listof.Best analysis Compared with AI Detector, GPTZero starts at $12.99/mo and provides an API.
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FAQ
How much does GPTZero cost?
GPTZero uses a free pricing model, with paid plans from $12.99/mo, and it offers a free tier.
Does GPTZero have an API?
Yes — GPTZero offers an API for integration.
What are the best alternatives to GPTZero?
Popular alternatives include AI Detector, Originality, Decopy AI.
Verified Jun 2026
Specs
| Pricing | Free |
|---|---|
| Price from | $12.99/mo |
| Free tier | Yes |
| API | Yes |
| Open source | Yes |
| Platforms | Mobile App |
| Models | Gptzero |
| Languages | English, German, Portuguese, French, Spanish |
| Integrations | Google Docs, Google Classroom, Canvas, Zapier |
| Context window | 32k |
| Launched | 2025 |
| Popularity rank | #134 |