Top 10 Best Free AI Plagiarism Checker Tools for 2024

Best Plagiarism Checker AI Tool
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Top Plagiarism Checker Tools for AI Content

As a writer who weaves worlds with words, I know the magic that blooms from originality. But lurking in the shadows of creativity, there’s a sinister monster: plagiarism.

It can steal the soul of a story, tarnish an author’s reputation, and send shivers down any writer’s spine. Fortunately, in the digital age, we’re not defenseless.

Enter the knights in shining armor of the tech world AI plagiarism checkers.

But with so many options swirling in the cyber void, choosing the right weapon can feel like navigating a literary labyrinth.

Fear not, fellow wordsmiths! We have braved the depths of research and emerged with the top 10 AI plagiarism checkers of 2024, their features gleaming like polished quills.

1. Copyleaks: The Sherlock Holmes of Plagiarism

Copyleaks isn’t just a plagiarism checker; it’s a full-blown investigative agency. It hunts down copied content across the web, academic databases, and even the darkest corners of the deep web.

Multi-language support? Check. Image and audio plagiarism detection? Check. A white-label option for businesses? You bet. Copyleaks leave no stone unturned, ensuring your work shines with originality.


  • Comprehensive plagiarism check across the web, databases, and academic repositories
  • Source code, image, and audio plagiarism detection
  • Multi-language support (40+ languages)
  • White-label solutions and API integration
  • Detailed reports with originality scores and source breakdowns


Pricing: Starts at $29/month

Best for Content creators, educators, businesses, and organizations needing in-depth, multi-faceted plagiarism detection

2. Turnitin: The Gatekeeper of Academic Integrity

For students and educators, Turnitin is the name etched on the gates of academic honesty. Its extensive database of student papers and academic publications ensures a thorough scan, leaving no room for pilfered prose.

Detailed similarity reports offer students valuable feedback, guiding them toward the path of original thought.


  • Extensive database of student papers and academic publications
  • Detailed similarity reports with source identification
  • Grammar and spelling checks
  • Feedback and citation guidance for students
  • Integrates seamlessly with learning management systems


Pricing: Varies depending on institution and usage

Best for Students, educators, and institutions needing a robust plagiarism detection system for academic integrity

3. Grammarly: The Grammar Guru with Plagiarism Perks

Grammarly, the beloved grammar guardian, now doubles as a plagiarism watchdog. While its plagiarism checker lacks the depth of specialized tools, it’s a handy companion for everyday writers.

A quick scan of emails, blog posts, and social media captions ensures unintentional copycats don’t taint your work. Plus, its grammar and style suggestions help your writing shine even brighter.


  • Basic plagiarism checks against web sources and a limited internal database
  • Advanced grammar and style checking
  • Vocabulary suggestions and sentence rephrasing tools
  • Tone adjustment and real-time feedback
  • User-friendly interface and browser extensions


Pricing: Free plan with limited features; Paid plans start at $12/month

Best for: Casual writers, bloggers, individuals needing basic plagiarism checks and comprehensive grammar tools

4. Quetext: The Budget-Friendly Detective

For those on a tight budget, Quetext offers a surprisingly powerful plagiarism checker at an affordable price.

While its database isn’t as vast as Copyleaks or Turnitin, it scans the web diligently, identifying close matches and paraphrases with decent accuracy.

Its user-friendly interface and straightforward reports make it perfect for non-technical users.


  • Web-based plagiarism checking with comprehensive reports
  • Identifies close matches and paraphrases
  • Grammar and spelling checks
  • User-friendly interface and mobile app
  • Affordable pricing


Pricing: Starts at $9.99/month

Best for: Budget-conscious individuals, casual writers needing reliable plagiarism checks at a low cost

5. Plagiarism Checker X: The Speed Demon

Need results in a flash? Plagiarism Checker X is your digital Usain Bolt. Its lightning-fast scans tackle massive documents in seconds, making it ideal for quick checks on long files.

While its reports are less detailed, it provides basic source identification and originality scores, offering a convenient option for those who prioritize speed.


  • Blazing-fast plagiarism scans for large documents
  • Basic plagiarism reports with source identification and originality scores
  • Free plan with limited features; Paid plans offer more detailed reports and features


Pricing: Free plan with limited features; Paid plans start at $4.99/month

Best for Individuals needing quick plagiarism checks for large documents, those prioritizing speed over intricate reports.

6. Unicheck: The Global Guardian

For writers and businesses with international reach, Unicheck extends its plagiarism-detecting arms across the globe.

Its multi-language support ensures your work shines bright even in foreign tongues. Its similarity reports offer detailed breakdowns, highlighting not just copied phrases but also semantic similarities.


  • Multi-language plagiarism checks (over 100 languages)
  • Detailed similarity reports with source identification and semantic analysis
  • Grammar and spelling checks
  • White-label solutions and API integration
  • Mobile app for on-the-go checking


Best for: Global businesses, multilingual writers, organizations needing comprehensive plagiarism detection for international content

7. ProWritingAid: The Editor’s Ally

ProWritingAid isn’t just a plagiarism checker; it’s a literary editor in digital form. While its plagiarism detection capabilities are solid, its true strength lies in its in-depth analysis of style, grammar, and sentence structure.

It suggests improvements for clarity, conciseness, and overall impact, helping you polish your prose to a sparkling shine.


  • Comprehensive plagiarism checks with detailed reports
  • In-depth grammar and style analysis
  • Over 20 reports on sentence structure, overused words, cliches, and more
  • Thesaurus and dictionary integration
  • Tone and voice adjustment tools


Pricing: Free plan with limited features; Paid plans start at $20/year

Best for Writers of all levels seeking comprehensive feedback and plagiarism detection

8. WhiteSmoke: The Multilingual Maestro

Need a plagiarism checker that understands more than just English? WhiteSmoke speaks over 50 languages, ensuring your work shines even in languages beyond your native tongue.

Its plagiarism reports are thorough, and its grammar and style suggestions are tailored to the specific language you’re writing in.


  • Multilingual plagiarism checks (over 50 languages)
  • Grammar and style checks tailored to each language
  • Dictionary and thesaurus integration
  • Sentence rephrasing and vocabulary suggestions
  • Spell check and punctuation checker


Pricing: Free plan with limited features; Paid plans start at $5/month

Best for: Multilingual writers, translators, businesses with international content

9. Scribens: The Researcher’s Right Hand

Scribens is more than just a plagiarism checker; it’s a research assistant in digital form.

It helps you find credible sources, avoid plagiarism through proper citation, and check for factual errors. Its AI-powered summarization tool helps you condense research papers and articles, saving you valuable time.


  • Plagiarism checks with source identification and citation suggestions
  • Fact-checking and reference verification tools
  • AI-powered summarization for research papers and articles
  • Grammar and spelling checks
  • Paraphrasing and sentence rephrasing suggestions


Pricing: Free plan with limited features; Paid plans start at $9.95/month

Best for Researchers, students, and writers needing assistance with research and citation

10. PaperRater: The Self-Improvement Guru

PaperRater isn’t just a plagiarism checker; it’s a writing coach in digital form. It analyzes your work for clarity, conciseness, and engagement, offering actionable feedback to improve your writing skills.

Its plagiarism checks are reliable, and its reports provide detailed insights into your strengths and weaknesses as a writer.


  • Plagiarism checks with originality score and source identification
  • Feedback on grammar, style, and clarity
  • Vocabulary suggestions and sentence rephrasing tools
  • Plagiarism prevention tips and writing improvement exercises
  • Mobile app for on-the-go writing analysis


Pricing: Free plan with limited features; Paid plans start at $4.95/month

Best for Writers of all levels seeking feedback to improve their writing skills

Remember, choosing the right AI plagiarism checker is a personal quest. Consider your needs.


  1. What’s the best AI plagiarism checker for everyone?

There’s no one-size-fits-all, but Copyleaks excels in depth with multi-language and image/audio checks (great for professionals, and businesses). Turnitin dominates academia, while Grammarly offers basic checks for casual writers.

  1. I write in multiple languages. Which tool should I use?

Unicheck shines with over 100 language checks and detailed semantic analysis. WhiteSmoke handles 50+ languages, even tailoring grammar and style suggestions.

  1. I need research help beyond plagiarism checks. Any options?

Scribens! It checks facts, verifies references, and even summarizes research papers with AI. Perfect for students and researchers.

About Author

Matthews is a Professional Content writer and AI and NLP enthusiast, who merges technology and language expertise with a decade of experience in blog writing, eBook, etc..

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