Noplag
8.3#1 in plagiarism checkersFrom $9.99 a monthFree planWebAPILinuxmacOS
VisitNoplag vs Plagiarism Checker X
Plagiarism Checker X
6.6#15 in plagiarism checkers$39.95 one-timeFree planWindows
VisitWhat both publish
| Fact | Noplag | Plagiarism Checker X |
|---|---|---|
| AI detection | AI-content detection is marked as coming soon and is intended to appear as a separate signal. | The maker says its AI-generated content detector indicates whether content may have been produced by an AI tool or written by a human. |
| Founded | 2014 | 2012 |
| Headquarters | San Francisco, United States | 733 3rd Avenue, New York City, NY 10017, United States |
| Privacy | Noplag states that submitted documents are not used to train models or shared between accounts, and EU data residency is available. | The maker says documents remain on the user's computer during scanning and that customer content is not copied, stored, or sold. |
Noplag plans
- FreeFree
- Pro$9.99 a month
- Premium$19.99 a month
- EnterprisePriced on request
Plagiarism Checker X plans
- BasicFree
- Professional$39.95, paid once
- Business$147.95, paid once
Pick Noplag if…
Noplag may suit people checking documents for verbatim or near-verbatim overlap, including makers, small teams, agencies, publishers, and educational organizations. The listed plans range from a three-check monthly free tier to custom Enterprise arrangements.
Pick Plagiarism Checker X if…
It suits students, teachers, writers, universities, colleges, and SEO agents who need to check text or compare documents. Its readability tools may also suit users assessing reading level and text difficulty.