Freedom251 › Plagiarism Checkers
Plag
What Plag is
Plag is a web-based platform for checking text for plagiarism and AI-generated writing. Its checker compares text with internet sources and published materials, including more than 80 million scholarly articles from academic publishers. It flags copy-paste plagiarism, improper references, and paraphrasing; similarity reports mark matching passages and link to sources. The checker supports 129 languages. Plag’s AI detector checks writing generated by ChatGPT, Gemini, Llama, and other AI models. A free check returns one of three similarity ranges: 0–9%, 10–20%, or 21–100%. Verified educators can check up to 20 documents each month at no cost, and students can share an unlimited number of documents. Plag says uploaded documents are not added to comparison databases or shared with others. Its plans include Basic at €14.95 per month, Student at €29.95 per month, and PRO Unlimited at €299.95 per month. Additional services listed include plagiarism removal, text humanization, formatting, revision, editing, and proofreading.
Who it suits
Plag suits students, educators, and others who need to check writing against web and academic sources. Its educator allowance may suit verified educators checking documents at no cost.
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
Limits
A free check reports a similarity range of 0–9%, 10–20% or 21–100%. Verified educator accounts can check up to 20 documents per month at no cost; Basic includes 10,000 credits per month, with checks costing one credit per word.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Basic | EUR 14.95 / month · 10 000 credits / month · plagiarism, AI detection and cross-language checks: 1 credit per word · basic support · academic articles · in-depth analysis · beta features · priority support | €14.95 a month |
| Student | EUR 29.95 / month · 30 000 credits / month · plagiarism, AI detection and cross-language checks: 1 credit per word · basic support · academic articles · in-depth analysis · beta features · priority support | €29.95 a month |
| PRO Unlimited | EUR 299.95 / month · Unlimited / month · plagiarism, AI detection and cross-language checks: 1 credit per word · academic articles · in-depth analysis · beta features · priority support | €299.95 a month |
As plag.ie lists them, read 9 Oct 2026. The maker's own page has the final word.
Getting started
- Visit the Plag website.
- Use the free check, or choose a paid plan.
- Create a verified educator account to use the educator allowance.
- Submit text for plagiarism or AI detection checks.
Verdict
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.
Questions
Is Plag free?
Plag has a free plan. Verified educator accounts can check up to 20 documents per month at no cost.
How much do paid Plag plans cost?
Basic is €14.95 per month, Student is €29.95 per month, and PRO Unlimited is €299.95 per month.
What does a free check report?
It gives one of three similarity ranges: 0–9%, 10–20% or 21–100%.
Which languages does the plagiarism checker support?
The plagiarism checker supports 129 languages.
Does Plag compare text with academic sources?
Yes. It can compare documents with more than 80 million scholarly articles from academic publishers.
How does Plag describe its document privacy?
Plag says uploaded documents are not added to comparative databases or shared with lecturers, schools or others.
Facts from Plag's own pages
- Additional services
- The site lists plagiarism removal, AI text humanization, text formatting, document revision, and editing and proofreading services. · plag.ie, 9 Oct 2026
- AI detection
- The AI detector checks text generated by ChatGPT, Gemini, Llama, and other AI models. · plag.ie, 9 Oct 2026
- Company history
- Plag says it was established in 2011 and is used in more than 120 countries. · plag.ie, 9 Oct 2026
- Data handling
- The privacy policy identifies LINGUA INTELLEGENS, UAB as data controller and says personal data is generally processed and securely stored in the EU/EEA. · plag.ie, 9 Oct 2026
- Educator allowance
- Verified educator accounts can check up to 20 documents per month at no cost, and there is no limit on documents shared by students. · plag.ie, 9 Oct 2026
- Founded
- 2011 · plag.ie, 28 Sept 2026
- Free checks
- The free check provides a similarity range of 0–9%, 10–20%, or 21–100%. · plag.ie, 9 Oct 2026
- Headquarters
- The privacy policy lists LINGUA INTELLEGENS, UAB at Palangos St. 4-101, Vilnius, Lithuania. · plag.ie, 9 Oct 2026
- Languages
- The plagiarism checker supports 129 languages. · plag.ie, 9 Oct 2026
- Plagiarism types
- The checker identifies copy-paste plagiarism, improper references, and paraphrasing. · plag.ie, 9 Oct 2026
- Privacy
- The site says uploaded documents are not added to comparative databases or shared with lecturers, schools, or others. · plag.ie, 9 Oct 2026
- Product
- Plag is an online platform for detecting and preventing plagiarism by comparing text with internet sources and published materials. · plag.ie, 9 Oct 2026
- Research database
- The site says users can compare documents against over 80 million scholarly articles from academic publishers. · plag.ie, 9 Oct 2026
- Similarity reports
- Reports highlight matched text and provide links to the matching sources. · plag.ie, 9 Oct 2026
- Support
- The contact page offers 24/7 chatbot support, while the FAQ says paid clients can access live chat staffed by human agents. · plag.ie, 9 Oct 2026
Where Plag stands on Freedom251
- Plagiarism Checkers#15 of 31