Quick answer: GPTZero has a free plan, a Premium plan from about $12.99/month and a Professional plan from about $24.99/month. Paying annually saves up to roughly 45%. Teams can buy a Professional Team Plan (minimum two seats), and schools or companies can request custom Enterprise pricing.
Prices checked October 2026 from GPTZero and independent pricing trackers. Prices change, so confirm the current offer on GPTZero's pricing page.
GPTZero plans compared
| Plan | Price | Best for | Highlights |
|---|---|---|---|
| Free | $0 | Trying GPTZero, occasional checks | Basic AI detection, sentence highlights, limited monthly words |
| Premium | ≈ $12.99/mo | Students, individual teachers, writers | Higher word limit, Advanced Scan, plagiarism check, writing feedback |
| Professional | ≈ $24.99/mo | Heavy users, editors, educators grading in bulk | Highest individual limits, batch file scans, everything in Premium |
| Professional Team | Per seat (min. 2) | Small departments and agencies | Professional features per seat, shared credits, unified billing |
| Enterprise / Education | Custom | Schools, universities, companies | LMS integrations, admin tools, SOC 2 Type II, FERPA, GDPR, API |
What the free plan includes
The free plan covers basic AI detection with sentence-level highlighting, the Chrome extension and free grammar feedback, within a monthly word allowance. Scans over 10,000 characters require a free account. It is enough for occasional checks, but regular users quickly hit the limit.
Premium vs Professional: which should you choose?
- Choose Premium if you check a handful of documents a week and want Advanced Scan explanations and plagiarism checking.
- Choose Professional if you upload batches of files — for example, a teacher grading a whole class or an editor reviewing many submissions.
- Choose a Team or Enterprise plan if several people need access or you need Canvas/Google Classroom integration and compliance paperwork.
How to save on GPTZero
- Pay annually — annual billing is roughly 45% cheaper than paying month to month.
- Start on the free plan to confirm GPTZero fits your workflow before upgrading.
- Ask your school — many institutions already provide GPTZero to staff and students.
Is GPTZero worth paying for?
If you regularly need defensible results — sentence highlights, explanations, plagiarism checks and Writing Replay — the paid plans are good value compared with competitors. Cheaper tools exist (see GPTZero vs ZeroGPT), but they generally produce more false positives. For publishers and SEO teams, compare with Originality.ai.
FAQ
Is GPTZero free?
Yes, there is a permanent free plan with a monthly word limit. Paid plans unlock higher limits and advanced features.
Does GPTZero offer a student discount?
GPTZero does not advertise a standard student discount; the cheapest route is the annual Premium plan or access through your school.
Can I cancel GPTZero anytime?
Monthly plans can be cancelled from your account settings; check GPTZero's terms for annual plan refunds.
Does GPTZero have an API?
Yes. The GPTZero API is available for developers and organizations, with pricing through GPTZero's sales team.