Side by side
Plag vs PlagiarismCheck.org
Both stand on plagiarism checkers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Plag combines plagiarism and AI checks with similarity reports that link to matching sources. Its free checks offer only a score range, while paid plans add monthly credit allowances and support options.
Visit Plag
Choose PlagiarismCheck.org if you need originality, authorship or AI-content checks with browser access and PDF reports. Its free allowance offers a way to check two pages, while paid page bundles use one-time charges. Look elsewhere if you need API processing for non-English text or want an institutional price without requesting a quote.
Visit PlagiarismCheck.orgThe facts
| Plag | PlagiarismCheck.org | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Web | API, Extension, Web |
| Lowest paid plan | Basic: €14.95 a month | Basic: $5.99, paid once |
| Plans published | 3 | 6 |
| Maker | Not published | Not published |
| Website | plag.ie | plagiarismcheck.org |
| On plagiarism checkers | #15 of 31 | #11 of 31 |
Plag: what it does well
- Checks text against web and academic sources
- Supports 129 languages
- AI detector covers several named models
- Free checks and educator document allowance
- Reports link matched text to sources
What to know first
- Free checks return a range, not an exact score
- Paid plans begin at €14.95 per month
PlagiarismCheck.org: what it does well
- Two pages can be checked for free.
- Detects exact matches, substitutions and structural changes.
- Provides interactive results and downloadable PDF reports.
- Integrates with several learning platforms and Google Docs.
- Browser-based access requires no installation.
What to know first
- The API supports English text only.
- API submissions must contain at least 80 characters.
- Institutional Pro and Advanced plans require a quote.
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