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Plag

Plagiarism and AI content checked in many languages.

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AI DetectionFreeWe checked the prices on plag.ai on 28 Sep 2026.

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What is Plag?

Plagiarism and AI content checked in many languages.

Who is Plag best for?

Plag is best for students and academics who need plagiarism and AI checks on papers in many languages.

  • Students before a deadline

    A free check shows the similarity range, and the paid report marks paraphrases and faulty quotations with links to the matching sources.

  • Papers not written in English

    It checks plagiarism in more than 100 languages and AI text in more than 50, and it can spot text translated from a source in another language.

  • Teachers and lecturers

    Verified educators get 20 free document checks a month, and students can share their reports with them at no cost.

  • Academic research

    Student and PRO plans compare work against a database of more than 80 million scholarly articles, not only the open web.

How much does Plag cost?

Plag shows a free similarity range for any upload, and its paid plans start at EUR 14.95 a month for 10,000 credits, where each check costs 1 credit per word.

BasicEUR 14.95Per month
  • 10,000 credits a month, 1 credit per word per check
  • Plagiarism, AI and translated plagiarism checks
  • Basic support, no scholarly article database
StudentEUR 29.95Per month
  • 30,000 credits a month
  • Adds scholarly articles and in-depth analysis
  • Access to beta features
PRO 50EUR 44.95Per month
  • 50,000 credits a month, added to your balance
  • Scholarly articles, in-depth analysis, beta features
  • Priority support
PRO UnlimitedEUR 299.95Per month
  • Unlimited credits
  • Scholarly articles, in-depth analysis, beta features
  • Priority support

PRO also comes as PRO 100 at EUR 74.95 a month for 100,000 credits and PRO 500 at EUR 149.95 a month for 500,000 credits. Paying yearly takes 40% off: Basic is EUR 105.96 a year, Student EUR 216, PRO 50 EUR 325.92, PRO 100 EUR 540, PRO 500 EUR 1,080 and PRO Unlimited EUR 2,160. Plagiarism checks, AI detection and translated plagiarism checks each cost 1 credit per word. Plagiarism removal, editing and formatting are priced by document length. Prices on plag.ai are in euros; Plag's Americas site, Plagramme, lists the same amounts in US dollars. Full pricing on plag.ai. We checked these prices on .

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What are the best Plag alternatives?

Three tools on Recaply do Plag's job.

Questions about Plag

What is Plag?

Plagiarism and AI content checked in many languages.

Who is Plag for?

Plag is best for students and academics who need plagiarism and AI checks on papers in many languages.

Is Plag free?

Partly. Plag's free check tells you whether a document's similarity falls in the 0 to 9%, 10 to 20% or 21 to 100% range, but the full report needs credits, from EUR 14.95 a month. Verified teachers get 20 free document checks a month.

How much does Plag cost?

Plag's paid plans are Basic at EUR 14.95 per month, Student at EUR 29.95 per month, PRO 50 at EUR 44.95 per month and PRO Unlimited at EUR 299.95 per month.

What are the best Plag alternatives?

The closest alternatives on Recaply are Copyleaks, Advacheck and Quetext.

Where can I try Plag?

On its official website, plag.ai.

How do Plag credits work?

Every Plag check costs 1 credit per word, whether it is a plagiarism check, AI detection or a translated plagiarism check. A 5,000-word essay uses 5,000 credits per check, so Basic's 10,000 monthly credits cover two checks of that length.