Sentence-level triage around a concrete AI signal
GPTZero is an AI detector with a public basic scan, sentence-level highlights, document reports, and paid paths for deeper scans and team workflows.
GPTZero is an AI detector built around a simple review path: paste text, receive a whole-document signal, and inspect the sentences that most influenced the result. Public product materials also describe document uploads, writing feedback, plagiarism checks, and paid reports for deeper workflows.
Pricing
| Plan | Publicly stated price | Notes |
|---|---|---|
| Free | Free | Public basic scans are available with a limited allowance. |
| Premium | $12.99/month billed annually | Public pricing lists 300,000 words per month and advanced scan features. |
| Professional | $24.99/month billed annually | Public pricing lists a higher monthly word allowance and Premium features. |
| Team / enterprise | Contact sales | Public pages describe managed paths rather than a full self-serve list. |
Same-sample result
The locked 116-word paragraph returned AI 100%, Mixed 0%, and Human 0% in the public Basic Scan. The result also highlighted several sentences as high AI impact, including the sentence beginning “The useful question was not whether AI touched the text.”
That combination is the product’s most useful editorial shape: a headline signal to triage the draft, followed by a short list of places that need human attention. It remains a detector output, not proof of who wrote the paragraph.
Best fit
GPTZero fits an editor, teacher, or content lead who needs to decide which parts of a draft deserve a closer read. Sentence-level clues are more actionable than a percentage with no explanation.
Less natural fit
It is less natural when the workflow needs a final authorship determination or repeated deep scans without an account or paid plan. The product’s own result should be paired with writing history, source notes, and a human review.