Plagiarisma vs Plagium
Plagiarisma
plagiarisma.netPlagium
plagium.comSide by side
| Figure | Plagiarisma | Plagium |
|---|---|---|
| Price from | $8.25/mo | $19.98/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| iOS | — | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Plans published | 8 | 9 |
| Spec score · AI Plagiarism Checkers | 9.2 (#4) | 9.0 (#5) |
| Spec score · Plagiarism Detection Software | 9.0 (#6) | 8.9 (#8) |
| AI detector | The site provides a separate detector that estimates whether text resembles model-generated writing. | The AI detector reports a likelihood of machine authorship and highlights mixed documents section by section. |
| Headquarters | 71-75 Shelton St, London WC2H 9JQ, United Kingdom | New York, USA and France |
| Limit: detection accuracy | An independent six-document test reported that the scanner detected only the unchanged website-copy test and missed altered, paraphrased, PDF, and e-book plagiarism. | A Trustpilot reviewer estimated plagiarism detection at only 50–60% accuracy and rated the AI detector worse than competitors. |
| Support | The contact page lists [email protected] and says premium members should include a valid order ID when reporting issues or sending suggestions. | Published support channels include a help center, email or help-desk support, FAQs/forum and priority email on paid tiers. |
| What it does | Plagiarisma checks pasted text, uploaded documents, and URLs for matching passages and reports a uniqueness score. | Plagium compares submitted writing with online material to identify possible plagiarism and separately estimates whether text appears machine generated. |
| Workspace permissions | The add-on requests access to installed documents, third-party content in Google prompts and sidebars, an external service, email sending, and account information. | The add-on requests access to installed documents, third-party sidebar content, an external service and basic Google account information. |
Plans
Plagiarisma
- Plagiarisma Desktop Plagiarism CheckerFree
- Standard checksFree
- One-day subscription$2, paid once
- One-month subscription$10, paid once
- Three-month subscription$25, paid once
- Six-month subscription$49, paid once
- One-year subscription$99 a year
- Paid featuresPrice not published
Plagium
- FreeFree
- Free accountFree
- Single document$2, paid once
- Credit packages$7.95, paid once
- Unlimited$19.98 a month
- Institutional$1,200 a year
- InstitutionsPriced on request
- Monthly planPrice not published
- Prepaid planPrice not published
In their own words
Plagiarisma
Plagiarisma is an originality checker that compares text with web sources, books and academic papers. Users can paste text, enter a URL or upload a document in formats including PDF, DOCX, RTF, TXT, HTML, spreadsheets, presentations and ebooks. Its homepage says the checker supports more than 190 languages. The service runs on the web and has a Windows desktop download listed as version 2.0 for.NET on Windows x86/x64. Desktop tools include plagiarism scanning, AI content detection, paraphrasing and APA citation generation. A Google Docs add-on offers checking, paraphrasing, summarizing and AI detection; its listing allows five free document scans per day, with paid features available by monthly subscription. A free plan is listed, including a Windows desktop checker at free. The company says it does not store private texts in public databases. Its FAQ says premium membership orders may be refunded within three days, while trial orders are not refundable.
Plagium
Plagium analyzes text for similarity with other material and offers a separate tool for identifying patterns compatible with AI-generated writing. Its plagiarism service compares submitted text with an online database and reports similarities with links to original sources. The AI Detector uses statistical and probabilistic analysis of writing patterns. Deep Search accepts Microsoft Word, PDF, and native text files; Google Drive integration and a Google Docs add-on support document analysis. Institutional users can access an API, while business solutions can integrate with corporate CRM, ERP, and document-management systems. Plagium presents solutions for educational institutions, publishers, editors, companies, researchers, and compliance teams. The free account costs nothing and allows five daily searches with a 4,000-character limit, but excludes Deep Search and API access. Plagium says submitted content remains owned by the user and is processed for analysis, report generation, and service improvement. Reports are automated estimates rather than definitive proof, and private, unpublished, or non-indexed material may not be detected.