Check-Plagiarism vs Plagium
Check-Plagiarism
check-plagiarism.comPlagium
plagium.comSide by side
| Figure | Check-Plagiarism | Plagium |
|---|---|---|
| Price from | $4.17/mo | $19.98/mo |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Plans published | 10 | 9 |
| Spec score · AI Plagiarism Checkers | 8.7 (#7) | 9.0 (#5) |
| API availability | The vendor offers APIs for registered users to embed plagiarism checking in CMS, CRM or LMS systems. | API access is restricted to the Institutional plan rather than individual free, prepaid or monthly plans. |
| API endpoints | Documented endpoints include /apis for account status and /apis/checkPlag for article checking. | API v3 documents endpoints support text creation, file upload, document retrieval, result retrieval and remaining-credit checks. |
| Integrations | The API page says the API can integrate with any CMS and names WordPress, widgets, and Android among supported platforms. | Plagium lists Google Drive integration and a Google Docs Add-on for analyzing documents. |
| Plagiarism detection | Its checker scans billions of web pages and uses AI methods intended to identify exact matches, paraphrased text and lightly edited duplication. | The service compares submitted text with a massive online database and reports similarities with links to original sources. |
| Praise: ease and accuracy | G2 reviewers commonly praise easy use, useful reports and generally effective plagiarism or AI-content detection. | The sole Capterra reviewer praised ease of use, broad source comparison and detection accuracy, reporting no negative experience. |
| Rating on Capterra | 4.5 out of 5 from 2 reviews | 5.0 out of 5 from 1 review. |
| Rating on GetApp | 4.5 out of 5 from 2 reviews | 5.0 out of 5 from 1 review. |
| Rating on Trustpilot | 2.8 out of 5 from 4 reviews | 3.3 out of 5 from 2 reviews. |
| Reports | Users can save, download and share detailed plagiarism reports, including PDF output. | Reports can include highlighted passages, matched sources, a similarity verdict, PDF export and a read-only share link. |
| Support | The API page advertises 24/7 support for selected API tiers and offers contact for integration questions. | Published support channels include a help center, email or help-desk support, FAQs/forum and priority email on paid tiers. |
| What it does | The service checks submitted text against web, academic and publication sources and reports duplicated passages, similarity percentages and matching sources. | Plagium compares submitted writing with online material to identify possible plagiarism and separately estimates whether text appears machine generated. |
Plans
Check-Plagiarism
- Weekly$4.99, paid once
- Annual$8.33 a month
- API Basic$10 a month
- API Company$14.99 a month
- Monthly$14.99 a month
- Semi-Annual$16.66 a month
- API Basic Yearly Plan$50 a year
- API Business$50 a month
- API Company / Webmasters$99.99 a year
- API Business / Colleges / Universities$250 a year
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
Check-Plagiarism
Check-Plagiarism is a plagiarism-checking service for students, teachers, researchers, content creators, and digital publishers. It accepts pasted or typed text and DOC, DOCX, TXT, or PDF uploads, with a listed maximum of 7,000 words per document. The checker reports duplicated passages, sentence-level matches, similarity percentages, and matching sources. Its AI is described as detecting paraphrased or lightly edited text as well as exact matches. The service says it checks billions of web pages and provides access to academic databases and publications, with support claimed for more than 20 languages. Reports can be downloaded or shared, including as PDF. Free online use is available with limited searches; registered accounts can increase the limit. Plans include Monthly at $14.99 a month and Annual at $8.33 a month, billed $99.99 every 12 months. API access and LMS integrations are listed.
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.