AI Tools
Originality vs GPTZero: Which AI Detector Should You Pay For?
Originality vs GPTZero: Originality.ai's Pro plan costs $12.95 per month billed annually (2,000 credits, about 200,000 words), while GPTZero Premium runs $12.99 per month billed annually for 300,000 words. Both detect AI-written text, but they serve different buyers: publishers and agencies versus schools.
What matters
- Verified Aug 22, 2026: Originality.ai Pro is $12.95/mo billed annually ($14.95 monthly) with 2,000 credits, about 200,000 words; GPTZero Premium is $12.99/mo billed annually ($23.99 monthly) with 300,000 words.
- GPTZero's advertised $9.09/mo is a limited-time back-to-school promo (code BTS26); the regular annual rate is $12.99/mo.
- Originality.ai bundles plagiarism, readability, fact check, full-site scans, and team management; GPTZero adds LMS integration (Canvas, Google Classroom), batch file scans, and a free 10,000-character checker.
- Originality.ai's pricing page lists no free tier; GPTZero's homepage offers a free AI checker.
- Publishers and agencies verifying outsourced content pick Originality.ai; educators, students, and high-volume word scanners pick GPTZero.
What is Originality.ai?
Originality.ai is a paid AI-content detection platform aimed at publishers, agencies, and content teams. Its all-in-one plan bundles AI detection, plagiarism checks, grammar checking, readability scoring, fact checking, and a Chrome extension.
Prices verified on the official pricing page on Aug 22, 2026: the Pro plan costs $12.95 per month billed annually ($155.40 per year, saving $24) or $14.95 billed monthly, and includes 2,000 credits per month. One credit equals 100 words, so a subscription covers about 200,000 words. Credits expire at the end of each month and can be topped up. The Enterprise tier, aimed at agencies and publishers, is $136.58 per month billed annually ($1,638.96 per year) or $179 monthly, with 15,000 credits per month, shared report links, and a dedicated customer success manager. The pricing page lists no free tier.
What is GPTZero?
GPTZero is an AI detector built for education first: the site reports over 10 million teachers and students using it in more than 100 countries, and it is an official AI detector partner of the American Federation of Teachers. The homepage offers a free AI checker with a 10,000-character scan box.
Prices verified on the pricing page on Aug 22, 2026: Premium is $12.99 per month billed annually or $23.99 monthly, with 300,000 words per month, a 50,000-character per-scan limit, and batch uploads up to 50 files. Professional is $24.99 per month billed annually or $45.99 monthly, with 500,000 words per month (up to 2 million words of overage), a 150,000-character per-scan limit, batch uploads up to 250 files, page-by-page scanning, and custom LMS integration for Canvas and Google Classroom. The plan comparison table also lists plagiarism checking, grammar checks, and citation tools. Team pricing starts at $24.99 per member per month billed annually.
Originality vs GPTZero: pricing compared
Both tools land near $13 per month on annual billing, so the buying decision comes down to what the subscription actually covers. The table below is built from the two official pricing pages, fetched on Aug 22, 2026.
Who should choose Originality.ai
- Publishers and agencies that outsource writing: full-site scans and plagiarism checks are part of the all-in-one plan.
- Teams: additional seats cost $8.62 per month billed annually ($9.95 monthly) per member, with role assignment and shared scan tags.
- Buyers who want one subscription for detection plus quality checks: readability scoring, fact checking, and grammar are in the same plan.
Who should choose GPTZero
- Educators and students: 10 million-plus teacher and student users, the American Federation of Teachers partnership, and Canvas and Google Classroom integration on Professional.
- High-volume word scanning: Premium's 300,000 words per month beats Originality.ai Pro's about 200,000 words at a nearly identical annual price.
- Occasional users: the free 10,000-character checker covers light use without a subscription.
How the free options compare
GPTZero is the only one of the two with a free tier: the homepage checker accepts up to 10,000 characters per scan, and the pricing page keeps a free start as its main call to action. Originality.ai's pricing page shows only paid plans, so the cheapest way to evaluate it is the $14.95 monthly Pro plan, or $12.95 per month billed annually.
For a one-off check of a few paragraphs, GPTZero's free scan is enough. For recurring review of articles, whole site pages, or outsourced drafts, a paid plan on either side beats manual sampling.
The honest catch
GPTZero's $9.09 and $17.49 prices are limited-time back-to-school promo rates (code BTS26, shown with a 30% off badge on the pricing page); the regular annual rates are $12.99 and $24.99 per month.
Originality.ai's subscription credits expire at the end of each month and renew monthly. Unused credits do not carry over, per its pricing page.
Neither vendor publishes accuracy benchmarks on its pricing pages, and detection results are contested territory. The "Don't paste the AI" pushback that topped Hacker News this week is partly a reaction to how aggressively AI-written content is policed. Treat any detector score as a flag for human review, not a verdict.
At a glance
| Originality.ai Pro | GPTZero Premium | |
|---|---|---|
| Annual price | $12.95/mo billed annually ($155.40/yr) | $12.99/mo billed annually |
| Monthly price | $14.95/mo | $23.99/mo |
| Words included | 2,000 credits, about 200,000 words | 300,000 words per month |
| Free tier | None listed on pricing page | Free checker, 10,000 chars per scan |
| Extra tools | Plagiarism, readability, fact check, full-site scan | Plagiarism, grammar, citations; LMS on Professional |
FAQ
Is GPTZero free?
Yes. GPTZero's homepage offers a free AI checker with a 10,000-character scan box. Paid plans (Premium $12.99/mo billed annually, Professional $24.99/mo billed annually) unlock higher word limits and batch scanning.
Does Originality.ai have a free plan?
No free tier is listed on Originality.ai's pricing page. Pro starts at $12.95 per month billed annually, or $14.95 billed monthly.
Which AI detector is more accurate, Originality.ai or GPTZero?
Neither vendor publishes accuracy benchmarks on its pricing pages, so no verified accuracy comparison exists. Detection results also vary by content type and language. Pick by workflow fit: full-site scans and plagiarism checks for publishers, LMS integration and batch files for educators.
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