Plagiarism Checker X vs Plagium
Plagiarism Checker X
plagiarismcheckerx.comPlagium
plagium.comSide by side
| Figure | Plagiarism Checker X | Plagium |
|---|---|---|
| Price from | Free | $19.98/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | — |
| iOS | — | Yes |
| Android | — | Yes |
| API | — | Yes |
| Plans published | 3 | 9 |
| Spec score · AI Plagiarism Checkers | 8.1 (#8) | 9.0 (#5) |
| AI detection | The maker says its AI-generated content detector indicates whether content may have been produced by an AI tool or written by a human. | Plagium provides a separate AI Detector based on statistical and probabilistic analysis of writing patterns. |
| Founded | 2012 | 2006 |
| Headquarters | 733 3rd Avenue, New York City, NY 10017, United States | New York, USA and France |
| Reports | Reports highlight matched similarity with colors and references and can be exported as Word or PDF documents. | Reports can include highlighted passages, matched sources, a similarity verdict, PDF export and a read-only share link. |
| Support | The pricing page lists 24/7 customer support with Professional and priority support with Business. | Published support channels include a help center, email or help-desk support, FAQs/forum and priority email on paid tiers. |
Plans
Plagiarism Checker X
- BasicFree
- Professional$39.95, paid once
- Business$147.95, paid once
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
Plagiarism Checker X
Plagiarism Checker X is Windows desktop software for checking documents and text against published web pages for plagiarism and similarity. Its online checker compares content with more than 16 billion pages. Bulk Comparison examines multiple documents in repositories, while Side-By-Side Difference places content in two windows to locate matching text. An AI detector indicates whether writing may have come from an AI tool or a human. A readability checker analyzes reading levels, extracts keywords and assesses difficulty. Reports mark matches with colors and references and can export to Word, PDF or Excel. The software accepts Word, PDF, text and other textual formats. Its interface is available in English, Spanish, French, German, Italian, Dutch and Portuguese, with content support for hundreds of languages. The maker says documents remain on the user’s computer and customer content is not copied, stored or sold. Basic is free with limited words and a daily search limit. Professional costs $39.95, paid once; Business costs $147.95, paid once.
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.