Tool profile
Copyleaks: cost, fit and limits
Copyleaks is an AI content and plagiarism detection service made by Copyleaks, Inc. that scans text in many languages, adds AI image detection, and offers an API, LMS and WordPress integrations plus browser and Google Docs add-ons for schools, publishers and businesses.
What to know first
Copyleaks sells Personal at $13.99 a month on annual billing, Pro at $74.99 a month with 25 seats, and a quote-only Enterprise tier. The product reaches further than most checkers: AI text detection in 30-plus languages, plagiarism in 100-plus, AI image detection and website sitemap scans on Pro. A Shared Data Hub of user-submitted documents improves matching, and the privacy policy lets the company train models unless customers opt out.
Copyleaks at a glance
| Maker | Copyleaks, Inc., Not stated on the vendor pages |
|---|---|
| Free plan | Free trial only |
| Entry price | $13.99 per month billed annually |
| API access | Yes |
| Category | Best AI Plagiarism Checkers in 2026, rank 3 of 13 |
| Website | copyleaks.com |
Who Copyleaks is best for
Multilingual schools
AI detection in 30-plus languages and plagiarism in 100-plus languages suit institutions that handle essays in several languages, with LMS integration for routing submissions.
Website owners
Pro adds sitemap scans of entire websites, so a site owner can check a whole domain for copied pages instead of pasting text page by page.
Teams that build on an API
An API page and an integration list mean a product team can add scans to its own platform, and Enterprise customers may elect to opt out of model training.
Moderators of image content
AI Image Detection scans images for AI generation and plagiarism in one report, which helps platforms that review pictures as well as text.
Copyleaks plans and pricing
| Plan | Price | What it includes |
|---|---|---|
| Personal | $13.99 per month billed annually ($16.99 monthly) | AI detection in 30-plus languages, plagiarism detection in 100-plus languages, Shared Data Hub, browser extension, Google Docs add-on, MCP access and saved scans. |
| Pro | $74.99 per month billed annually ($99.99 monthly) | Everything in Personal, plus 25 user seats, advanced detection filters, sitemap scans of whole websites, cross-language translation detection and an analytics dashboard. |
| Enterprise | Custom quote | Customizable solutions arranged through sales, with enterprise customers allowed to elect to opt out of model training according to the privacy policy. |
Checked November 2026.
What Copyleaks does
- AI Logic text detection
- The AI Detector uses what Copyleaks calls AI Logic detection for text in more than 30 languages, which is broader than the English-only scope of several rivals on this list.
- AI image detection
- Image scanning for AI generation and plagiarism arrives in one report, so a moderator reviewing a mixed submission does not need a second tool for pictures, though no accuracy figures were published.
- Shared Data Hub
- A library of user-submitted documents improves plagiarism matching, which raises the hit rate for student work but means uploaded documents join a shared pool unless the customer opts out.
- Multi-file scanning
- Personal and Pro let a user scan multiple files in one upload, which saves repeated pasting when a teacher or editor checks a full folder of student submissions in one sitting.
- Sitemap and website scans
- Pro scans a sitemap to check an entire website, a feature that targets publishers hunting for scraped, syndicated or duplicated pages across a whole domain.
- Extensions and add-ons
- A browser extension for Chrome, Edge and Firefox plus a Google Docs add-on let writers start a scan from the place where they draft the text, which saves an export step.
How Copyleaks handles your data
The privacy policy says Copyleaks may use submitted information to train its models. Direct customers can opt out by contacting support, and enterprise customers may elect to opt out. The Shared Data Hub is described as a library of user-submitted documents used to improve plagiarism matching. FERPA is referenced for educational institution customers, but no certificate is named. The pages read do not state a hosting region or give a retention period, so the vendor's policy was not checked for those points.
Where Copyleaks falls short in practice
- Training on by default. Direct customers must contact support to opt out of model training, so a team handling confidential manuscripts or student records should make a written opt-out a purchase condition.
- Seat cap in Pro. Pro includes 25 seats, and more seats are bought separately, so an organization of a few hundred reviewers will end up on Enterprise and negotiate by quote.
- Headquarters not stated. The terms name Copyleaks, Inc. and an affiliated company, but the pages read give no headquarters country, which matters to buyers with residency rules or procurement checks on the vendor's location.
Works with
Alternatives to Copyleaks
Copyleaks: common questions
Which languages does Copyleaks cover?
The pricing page lists AI detection in 30-plus languages and plagiarism detection in 100-plus languages on Personal. The page does not publish a language list or accuracy per language, so test your own language in a trial. Cross-language translation detection is a Pro feature, not part of Personal.
What is the Shared Data Hub?
It is a library of documents submitted by users that Copyleaks uses to improve plagiarism matching. The benefit is a bigger comparison pool, especially for student work. The cost is that your documents may join it, so ask how to exclude confidential files before uploading.
Does Copyleaks train models on my documents?
The privacy policy says it may use the information to train its models. Direct customers can opt out through support, and enterprise customers may elect to opt out. Confirm the opt-out in writing before you upload unpublished work or student records.
How many users does Pro include?
Pro includes 25 user seats at $74.99 a month on annual billing or $99.99 monthly. The plan says more seats are bought separately, though the pricing page does not give the extra-seat price. Ask before budgeting for a larger team.
Can Copyleaks scan images?
Yes. The vendor lists AI Image Detection, which scans images for AI generation and plagiarism in one report. The pages read do not give accuracy figures or file limits, so run sample images through a trial before trusting it for moderation decisions.