Plag.ai
Plag.ai is a web service for plagiarism checking, AI-text detection, and translated-plagiarism analysis.
What Plag.ai is
Plag.ai is a web service for plagiarism checking, AI-text detection, and translated-plagiarism analysis. Its plagiarism checker looks for copied passages, problematic references, and paraphrases, then marks matches and links to sources. Separate colors distinguish quotations it recognizes as proper from citations it flags. The AI detector supports more than 50 languages, offers sentence-level breakdowns, and can produce downloadable PDF reports. Translated-plagiarism checking compares meaning across 56 languages, while the service lists 129 supported languages overall. The homepage provides up to three free evaluations: one plagiarism check, one AI check, and one translated-plagiarism check. DOC, DOCX, and TXT uploads are free, with other formats such as Word, LibreOffice, Pages, and PowerPoint also accepted. Plag says documents are never stored or shared with institutions or third parties. Educators worldwide receive premium plagiarism and AI detection with unlimited uploads and no word or page limit.
Good
- Checks plagiarism, AI text, and translations
- Provides source links for detected matches
- Offers sentence-level AI explanations and PDF reports
- Three free evaluations are available
- Documents are not stored or shared
Watch out
- Free document uploads are limited to listed formats
- Basic and Student plans include basic support
Who it suits
It suits students, educators, schools, universities, publishers, and professionals checking originality or AI-written text. Educators can use the stated premium services without charge.
Verdict
Plag.ai covers conventional, AI, and cross-language checking in one web service. Free evaluations and educator access broaden entry, while paid usage is organized around monthly credit limits or unlimited checking.
Plans and prices
From Plag.ai's own pricing page, checked 7 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Basic | €14.95 a month | 10,000 credits/month · 1 credit per word for plagiarism, AI, and multilingual plagiarism checks · basic support · Monthly |
| Student | €29.95 a month | 30,000 credits/month · 1 credit per word for plagiarism, AI, and multilingual plagiarism checks · basic support · Monthly |
| PRO Unlimited | €299.95 a month | Unlimited/month · plagiarism, AI, and multilingual plagiarism checks · priority support · Monthly |
The facts
Each one read from Plag.ai's own pages, with the date it was checked.
What it does
- AI detection
- The AI detector supports more than 50 languages and provides sentence-level breakdowns and downloadable PDF reports.checked 7 Oct 2026
- Audience
- Plag describes its plagiarism and AI tools for students, educators, schools, universities, publishers, and other professionals.checked 7 Oct 2026
- Citation handling
- The checker distinguishes proper quotations from citations identified as plagiarism using different highlight colors.checked 7 Oct 2026
- Database
- The student page says the scholarly article database contains more than 80 million articles.checked 7 Oct 2026
- Educator access
- Plag says educators worldwide can use its premium plagiarism and AI detection services for free, with unlimited uploads and no word or page limit.checked 7 Oct 2026
- File formats
- The homepage lists DOC, DOCX, and TXT for free document uploads and says other formats, including Word, LibreOffice, Pages, and PowerPoint, can be uploaded for checking.checked 7 Oct 2026
- Plagiarism features
- Its checker identifies copy-paste plagiarism, improper references, and paraphrases, and highlights matches with links to sources.checked 7 Oct 2026
- Privacy
- The homepage says documents are never stored or shared, and that they are not shared with institutions or third parties.checked 7 Oct 2026
- Product
- Plag offers plagiarism checking, AI detection, and cross-language translated plagiarism checking.checked 7 Oct 2026
- Support
- The pricing page lists basic support for Basic and Student plans and priority support for PRO Unlimited.checked 7 Oct 2026
- Translated plagiarism
- The translated plagiarism service analyzes meaning across 56 languages to identify cross-language matches.checked 7 Oct 2026
The company
- Founded
- Plag says it was established in 2011 and is used in more than 120 countries.checked 7 Oct 2026
Money
- Free access
- The homepage offers up to three free evaluations: plagiarism, AI, and translated plagiarism.checked 7 Oct 2026
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