Categories / GPTZero
GPTZero
AI content detector with plagiarism check, grammar checker, writing replay and an AI grader for essays.
Prices may change. These are correct as of 9 Nov 2026. Please confirm on the vendor's own page before you pay.
Unverified: Sources disagree. GPTZero's own pages agree on Free, Premium $12.99 and Professional $24.99 (prices per month billed annually) but disagree on the plan list and word limits, so this is marked as sources disagreeing.
Free plan
Free plan. Free plan: 10,000 words scanned a month with AI detection, multilingual detection and writing feedback, no card.
Plans and prices (USD)
Swipe the table sideways to see what each plan includes.
| Plan | Billed monthly | Yearly, per month | What it includes |
|---|---|---|---|
| Free | $0 | not recorded |
|
| Premium | not recorded | $12.99 |
|
| Professional | not recorded | $24.99 |
|
"Not recorded" means we did not find that price, not that it is free. Prices exclude tax and can differ by country.
Where it may fit
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Taken from what the vendor says the tool does. We have not tested it.
What to watch
- One GPTZero comparison page lists an Essential plan at $8.33 a month billed annually (150,000 words); other 2026 pages list only Free, Premium, Professional and Enterprise.
- Some pages describe Professional as up to 10 million words of overage; the Moodle page says 500,000 words a month.
- No monthly-billing price is shown on the pages I read.
- Enterprise is quote-based. Check gptzero.me/pricing before buying.
Sources
- GPTZero pricing page (checked 9 Nov 2026)