Crossref Similarity Check vs Plagiat.pl
Crossref Similarity Check
crossref.orgPlagiat.pl
plagiat.plSide by side
| Figure | Crossref Similarity Check | Plagiat.pl |
|---|---|---|
| Price from | $3.33/mo | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | — |
| Plans published | 2 | 3 |
| Spec score · Plagiarism Checkers | 8.4 (#8) | 7.3 (#25) |
| Purpose | Similarity Check helps Crossref members detect potential plagiarism by comparing manuscripts with published academic and general web content. | Plagiat.pl provides antiplagiarism tools to check text originality and protect intellectual property. |
Plans
Crossref Similarity Check
- Similarity Check per-document checkingFree
- Similarity Check annual service fee$40 a year
Plagiat.pl
- Individual document check (Tokens)$3, paid once
- Business subscriptionPriced on request
- Education subscriptionPriced on request
In their own words
Crossref Similarity Check
Crossref Similarity Check is a paid plagiarism-screening service for Crossref members. It compares submitted manuscripts with academic publications and general web content, using Turnitin’s iThenticate software. Reports provide a Similarity Score and highlight matching passages for editorial review. Crossref says the comparison database contains over 78 million full-text scholarly content items. Editors can submit manuscripts in iThenticate or through a manuscript system using the API, then receive an immediate report describing potential matches and overlap. Membership includes read-only database access, discounted checking fees, unlimited organizational users, and enhanced text matches in Document Viewer. Participation requires Crossref membership, active publication of DOI-assigned content, and full-text URLs in metadata. The annual service fee is $40 a year, representing 20% of the membership fee. Per-document checking is free for the first 100 documents yearly, then volume-tier charges apply to documents up to 25,000 words.