Head-to-head
Originality.ai vs GPTZero: which one in 2026?
Originality.ai is an AI and plagiarism checker from Originality AI Inc. aimed at publishers and agencies, and GPTZero is an AI detector from GPTZero LLC with a strong education focus. Originality.ai publishes clear prices and word allowances; GPTZero's individual plan prices were not visible.
Verdict
Originality.ai ranks above GPTZero on this site because a buyer can see what each tier costs and how many words it covers, and the extra checks reduce the number of tools a content team needs. GPTZero is the better fit for schools and anyone who wants Writing Replay and a stated SOC 2 Type II. Its individual prices were not readable, so ask before assuming a number. On both, opt out of training if you scan sensitive drafts.
Originality.ai and GPTZero side by side
| Originality.ai | GPTZero | |
|---|---|---|
| Price entry | $14.95 per month (Pro), or $12.95 billed yearly | Quoted |
| Main audience | Content teams, agencies and publishers, with an Enterprise plan described as for agencies and publishers. | Writers and classrooms, with a Chrome extension covering Gmail, Google Docs, Classroom and social media, plus Canvas and other learning platforms. |
| Published prices | Free at $0, Pro at $12.95 per month billed yearly or $14.95 monthly, and Enterprise at $136.58 yearly-billed or $179 monthly. | Individual prices were not shown on the pricing page we could read. The team plan displayed $0 per seat, which is a placeholder, not a confirmed price. |
| Allowance | Pro gives 200K words per month and Enterprise 1.5M. The free plan text says 10K words once, but a table on the page says 60 credits daily. | The team plan lists 500,000 words per member per month with a two-seat minimum. The homepage scan box accepts 10,000 characters. |
| Extra checks | Plagiarism, content quality score, grammar, readability, guideline checker and a fact and hallucination checker, all named on the pricing page. | Hallucination detector, plagiarism check, grammar feedback, and Authorship and Writing Replay, which records the writing process as proof. |
| API | API access is listed on the Enterprise plan, and the homepage lists API and MCP integration. | A separate developer API with ready-to-use code in 17 languages. Its price sits behind a contact-sales link. |
| Training on your text | Scan text may be used to train models unless you opt out, and any user can opt out. Student data is stated as not used. | Scan text may be used to train models unless you opt out. API subscriber inputs are not stored by default or used for product improvement. |
| Certification | SOC 2 and ISO are not stated on the pages opened. GDPR is described as designed for, with no certification claimed. | SOC 2 Type II compliance is stated on its privacy and security page. ISO is not stated, and GDPR is designed for, not certified. |
| Hosting and retention | Canada, the United States and other jurisdictions where providers operate. Deleting a scan does not immediately delete processor copies. | Servers in the United States, with processing possible elsewhere. Account data may stay up to three months after termination. |
Where each one wins
Originality.ai wins on
- Every plan price and word allowance is published, so a team can budget before contacting anyone
- Bundles plagiarism, grammar, readability and fact checks in one subscription
- Pro adds bulk scanning, shareable reports and team management at a low monthly price
GPTZero wins on
- States SOC 2 Type II compliance on its own security page
- Writing Replay offers process evidence a score alone cannot, useful in classrooms
- Integrates with Gmail, Google Classroom and Canvas, with a published per-member team allowance
Which to pick
Pick Originality.ai if
You run a content team or agency, need clear per-month word allowances and a published price, and want plagiarism and fact checks beside the AI score.
Pick GPTZero if
You work in education or need proof of how a document was written, want a stated SOC 2 Type II, and can ask sales for individual pricing.
Each tool in context: Originality.ai profile, GPTZero, and the full Best AI Content Detectors in 2026.
Frequently asked questions
How much does Originality.ai cost compared with GPTZero?
As of November 2026, Originality.ai lists Pro at $12.95 per month billed yearly or $14.95 monthly, and Enterprise at $136.58 or $179. GPTZero's individual plan prices did not load on the page we read, and its team plan showed a $0 placeholder. Check GPTZero's pricing page or ask sales for current figures.
Do Originality.ai and GPTZero train on the text I scan?
Both privacy documents say scan text may be used to train models unless you opt out. Originality.ai says any user can opt out and that student data is not used. GPTZero says its API subscriber inputs are not stored by default. Use the opt-out before scanning unpublished client work.
Which detector has an API for developers?
Both. Originality.ai lists API access on Enterprise and mentions API and MCP integration on its homepage. GPTZero offers a developer API with ready-to-use code in 17 languages, though pricing sits behind a contact-sales link. If you need a published API price, only Originality.ai's tier price is visible.
Is the Originality.ai free plan a one-time allowance or daily?
The pricing page conflicts with itself. The plan text gives a one-time 10K words, or 100 credits, while a comparison table mentions 60 credits renewing daily. The same table also shows $179 under the Free column. We used the plan text; confirm the allowance at signup before relying on it.