English text review
Check English writing for AI signals
Paste English text or choose a UTF-8 TXT file. Review the language, input limits and scan credit estimate before a separate confirmation sends text for analysis.
Bounded input and scan cost
Bounded input and scan cost
The current limits are 80–2,000 English words, 10,000 characters and 64 KiB of UTF-8. Each 500 words, rounded up, uses one scan credit, up to four.
Read the score carefully
A higher score means stronger AI-writing features in this text. It is not a probability, proof of authorship or a guarantee of accuracy.
Availability is shown before submission
After signing in, you can still preview counts and scan credits if GPTZero is not enabled. The page will not invent a score or submit a paid analysis.