ZeroGPT
The most-searched free detector, no signup required.
ZeroGPT is the casual first stop: paste text, get a percentage in seconds, no account needed. It has grown to tens of millions of monthly users, making it the most searched name in the category. The honest tradeoff is accuracy. Independent testing puts its real-world performance well below its own marketing claims, with false-positive rates measured between 15% and 33%, and it has been shown to misflag a large share of non-native English writing. For a quick ballpark read it is fine; for any consequential decision about a student or a client's work, the more accurate paid tools are the safer call.
| Best for | Casual, no-budget first-pass checks |
|---|---|
| Pricing | Free |
| Category | AI Detectors |
Highlights
- No signup
- Huge user base
- Instant results