Copyscape
7.5#4 in ai plagiarism checkersFrom $4.95 a monthFree planWebAPISelf-hosted
VisitCopyscape vs Noplag
What both publish
| Fact | Copyscape | Noplag |
|---|---|---|
| API | The Premium API supports automated URL, text, AI-detector and private-index operations with JSON, XML or HTML responses. | The developer API is REST with an OpenAPI spec and webhooks, and is available on paid tiers. |
| Company size | Crunchbase lists a headcount range of 1–10 employees. | LinkedIn lists Noplag Labs, Inc. as privately held with 2–10 employees. |
| Founded | Crunchbase lists the company as founded in 2003. | 2014 |
| Headquarters | Crunchbase lists Copyscape in Tel Aviv, Israel. | San Francisco, United States |
Copyscape plans
- Free CopyscapeFree
- Copyscape Premium$0.03, paid once
- Copysentry Weekly protection$4.95 a month
- Copysentry Premium daily protection$19.95 a month
- Copyscape EnterprisePriced on request
Noplag plans
- FreeFree
- Pro$9.99 a month
- Premium$19.99 a month
- EnterprisePriced on request
Pick Copyscape if…
Copyscape may suit publishers, website operators, and teams checking submitted or newly created content for online duplication. Premium and its API may suit organizations automating checks or reviewing batches.
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.