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Head to head · 2026

Plagiarisma vs QuillBot

Pricing, free plans, ratings, features, pros and cons, side by side. Where one comes out ahead, we mark it.

Plagiarisma

Free online plagiarism checker with an AI content detector, an AI paraphrasing tool and an AI…

3.2Free

Visit Plagiarisma (opens Plagiarisma in a new tab)

QuillBot

Started as a paraphraser, grew into a full writing suite

4.5$10/mo

Visit QuillBot (opens QuillBot in a new tab)

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

  • Lower starting price

    Not comparable

    Not comparable: Plagiarisma does not list a price

  • Free plan

    Tie

    Both have one

  • Higher rating

    QuillBot

    3.2 against 4.5

  • Same job?

    Yes

    Both are Writing tools

Side by side

Compared onPlagiarismaQuillBot
Our rating3.24.5Better
Starts atFree$10/mo
Free planYesYes
CategoryWritingWriting
PlansFree
  • FreeFree
  • Premium$10/mo
Key features
  • Plagiarism check against web sources, books and academic papers
  • 190+ languages and uploads in a dozen file formats
  • AI Content Detector for machine-written text
  • AI Paraphrasing Tool
  • AI Essay Writer
  • Multi-mode sentence and paragraph paraphrasing
  • Grammar and clarity checking
  • Text summarizer for long source material
  • Citation generator (APA, MLA, and others)
  • Plagiarism checker on paid tiers
Pros
  • Free to use, with no paid plan shown on the pages reviewed
  • Wide language and file-format support
  • Extensions and apps across several platforms
  • Paraphrasing engine is genuinely strong and the tool's original focus
  • Free tier covers real, ongoing use, not just a trial
  • Citation and plagiarism tools fit academic workflows well
Cons
  • No model, limits or accuracy figures are given for the AI tools
  • AI-detection scores are probabilistic and can misjudge human writing
  • The essay writer and paraphraser raise academic-integrity concerns
  • Heavy student association raises academic-integrity questions
  • Free tier word limits push serious use to Premium
  • Broader feature set feels secondary to the core paraphraser
CompanyPlagiarisma Ltd.Learneo, Inc., founded 2017

Prices come from each vendor's pricing page, last checked 20260921. Check the vendor before you buy.

FAQ

Questions people ask

Is Plagiarisma better than QuillBot?

In our reviews Plagiarisma scores 3.2 and QuillBot scores 4.5. The better pick depends on the job. Plagiarisma: Free online plagiarism checker with an AI content detector, an AI paraphrasing tool and an AI essay writer. QuillBot: Started as a paraphraser, grew into a full writing suite.

Which is cheaper, Plagiarisma or QuillBot?

Plagiarisma: free. QuillBot: from $10/mo.

Do Plagiarisma and QuillBot have free plans?

Yes, both have a free plan.

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