GPTZero
AI writing detector with sentence highlighting, plagiarism checks, writing replay and classroom integrations.
Best for Teachers and students checking essays for AI
What it does
AI writing detector with sentence highlighting, plagiarism checks, writing replay and classroom integrations.
Read more: 2 features and how people use themShow less
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Sentence level AI highlighting
Highlights specific sentences within submitted text to indicate where machine generated writing appears.
Use caseA teacher checks a submitted essay to see which exact sentences came from an AI model.
From gptzero.me/pricing -
Batch file uploads
Enables users to upload and scan multiple documents at once instead of one by one.
Use caseA teacher grades an entire class set by scanning up to 250 files simultaneously.
From gptzero.me/pricing
Written from GPTZero's own website, checked . Each feature links to the page it comes from; images are GPTZero's own.
Every plan
| Plan | Monthly | Billed yearly | Per | What it includes |
|---|---|---|---|---|
| Free | Free | $0 | per account | 10,000 words/month, basic + advanced AI scans, Chrome extension |
| Essential | $14.99 | $8.33 | per user | 150,000 words/month, plagiarism check |
| Premium | $23.99 | $12.99 | per user | 300,000 words/month, batch uploads |
| Professional | $45.99 | $24.99 | per user | 500,000 words/month per member; team version min 2 seats |
| Institutional / Enterprise | Contact sales | Not listed | custom | contact sales; LMS (Canvas) integrations, API |
From GPTZero's own pricing page, checked . Prices are in US dollars per month; "billed yearly" is the monthly price when you pay for a year up front. A few figures (often the yearly price) are derived rather than printed on the page.
Before you pay
- Export your data
- Yes
Only what GPTZero's own pages state, with the quote behind each answer. Anything they don't publish is left out rather than guessed.
GPTZero video tutorials
Independent creators on YouTube, not GPTZero or us. The video loads from YouTube only when you press play.
What the free plan includes
10,000 words/
Questions people ask about GPTZero
How much does GPTZero cost?
Paid plans start at $14.99 a month (Essential). 5 plans are listed above, from GPTZero's own pricing page.
Is GPTZero free?
Yes, there is a free plan: 10,000 words/month, ~10,000 characters per scan, no card required (third party sources).
Does GPTZero have an API?
Yes.
Works with
- AI models
- Gemini, Claude, LLaMa
Where this came from
Plans, prices and limits were copied from GPTZero's own pages and the other sources listed, then checked .
- gptzero.me/pricing
- toolsforhumans.ai/ai-tools/gptzero
- fast.io/resources/gptzero-ai-detector-review-2026.md
- gptzero.me/integrations/canvas
- gptzero.me/
How we collect prices and rank tools · Is something wrong? Correct this listing
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