GPTZero
Checks whether text was written by AI.
- Pricing
- Free plan + paid
- Paid plans from
- €9.99/month
- Category
- Detectors & humanizers
- Facts checked
- 3 October 2026
Our verdict A popular first stop for checking essays and articles.
Good
- Free checks available
- Clear monthly word limits
Not so good
- Listed prices are for yearly billing
What it can do
- AI writing detection
- Grammar feedback
- API for developers
GPTZero vs Originality.ai
GPTZero vs Turnitin