The Best Plagiarism Checker For the Modern Age

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The Most Accurate Plagiarism Checker Available: Advanced, Comprehensive and Precise.

Plagiarism today isn’t the verbatim copy and paste of yesteryear. Plagiarism has evolved to be more nuanced, more subtle and more advanced.

With the sheer amounts of data being published every second of every day, it was time to create a plagiarism checker tool that could not only keep pace with today’s content needs, but also root out potentially plagiarized work with greater accuracy and confidence. 

Uphold Content Integrity, Authenticity and Originality. Make Sure Your Ideas Stay Yours. 

  • Enhanced Accuracy - Originality.AI’s plagiarism check  tool uses advanced machine learning for more precise plagiarism checks.
  • Scans in Seconds - Our intelligent plagiarism checker scans vast content databases, highlighting and fetching matches in seconds.
  • User-Friendly Interface - Identify plagiarized content in seconds with our user-centered design. Built for ease of use and accessibility on any device.
  • Content Authenticity - Tailored to recognize even advanced instances of plagiarism including patchwork plagiarism, unintentional plagiarism, mosaic plagiarism and more. 

The Most Complete Plagiarism Report Available Online

Our comprehensive online plagiarism checker not only flags duplicate content as it detects plagiarism. It also provides matching URLs, quotes, paraphrasing and more in one detailed, easy-to-read plagiarism report.

Whether you’re concerned with accidental plagiarism or worried about self plagiarism, you can now check plagiarism with certainty and efficiency with our plagiarism checker. 

How Does Originality.AI’s Plagiarism Check Compare to Other Plagiarism Tools?

  • Scan It All - From research papers to search engines, our robust plagiarism detection tool uncovers potential plagiarism with customizable deep scan levels.
  • Check Plagiarism Instantly - Traditional free plagiarism scanners can’t spot subtle instances like patchwork plagiarism, paraphrasing and more, but Originality.AI can.
  • Maintain Content Credibility - Whether you’re checking student writing or upholding journalistic ethics, spotting writing issues before they turn into academic probation (or worse) is crucial to maintaining content integrity. 

Detect Plagiarism and Duplicate Content with Features You’ll Rely On Again and Again

Shareable Plagiarism Reports

Share your plagiarism report to prove that your writing is authentic, or showcase your strict adherence to journalistic ethics or academic integrity with shareable plagiarism reports.

Paraphrasing detection

Advanced machine learning and plagiarism check algorithms highlight even subtle instances of plagiarism like patchwork plagiarism, paraphrasing and more.

Multilanguage capabilities

Scan non-English text and compare it to a host of foreign language, literature and journal databases for greater certainty of originality across language

Detailed scan histoy

View previous scans and their results to compare plagiarism reports, check for duplicate content and see both highlighted passages and their plagiarism score.

Upload, Import, Paste and Check

Add your written content your way! Simply upload a document, import existing content, add a webpage URL or copy and paste.

Always up to date

We’re always a step ahead of new developments in AI, machine learning and NLP, so you can be confident that your plagiarism checker is always up-to-date.

Customers Love

We deeply understand your needs when it comes to identifying Original content and we are building features around our accurate AI detection and Plagiarism checking that users love!

After testing a number of AI content detection tools, I have found to be one of the best on the market. And now with the ability to detect paraphrased AI content, is even more powerful. It’s basically my go-to detection tool at this point.

Glenn Gabe

SEO Consultant,

At Clicking Publish, producing original, high-quality content is essential to our success. To maintain these standards, it's important that we verify the work from freelancers and outsourced writers. makes this process easy for us by providing a simple and efficient tool that ensures the content we receive meets our expectations.

Kityo Martin

Clicking Publish

I love the tool. Not only does it detect ACTUAL Al written content, but also writers who write just like Al. Great way to weed out Al and poor writing. Just because content was written by a human doesn't mean they did any better than an Al tool. We had a lot of our writers test positive for Al and they didn't use Al. What was common in all their writing was the lack of original thoughts. It was all regurgitation.

Ryan Cunningham

After doing some serious testing with Originality (which caters for the newerAl tech), I can't fool it (yet).

Joe Davies

Founder, FatJoe

So what can we learn from this? In many cases, the tool tells the right story, even when it's nuanced, like in the case of AI content edited by humans.

Gael Breton

Founder, Authority Hacker

I realize that AI content isn't going away and with human editing, it can save time/make blog content better. That said, I've also had writers submit content that was 100% AI and never told me. A BIG no-no. This tool ( is what I'm using to stop that.

Ron Stefanski

Flexible Pricing

Protect your reputation & improve your content quality by accurately detecting plagiarised content and artificially generated text.

At Clicking Publish, producing original, high-quality content is essential to our success. To maintain these standards, it's important that we verify the work from freelancers and outsourced writers. makes this process easy for us by providing a simple and efficient tool that ensures the content we receive meets our expectations.

Kityo Martin





  • 3000 Credits
    1 Credit Scans 100 Words for Plagiarism and AI Checking
    1 Credit Scans 10 Words for Fact Checking
    Additional Credits $0.01/credit
    2 Year Expiry
  • AI Scan
  • Plagiarism Scan
  • Readability Scan
  • 30 Day Scan History
  • Shareable Reports
  • File Upload
    docx, doc, pdf
  • No API
  • No Full Site Scans
  • No Scan from URL
  • No Team Management
  • No Tag Scans
  • No Access To Future Features
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  • 2000 Credits
    1 Credit Scans 100 Words for Plagiarism and AI Checking
    1 Credit Scans 10 Words for Fact Checking
    Additional Credits $0.01/credit
    1 Month Expiry, Renews Each Month
  • AI Scan
  • Automated Fact Checker
  • Plagiarism Scan
  • Readability Scan
  • Unlimited Scan History
  • Shareable Reports
  • File Upload
    docx, doc, pdf
  • API
  • Full Site Scans
  • Scan from URL
  • Team Management
  • Tag Scans
  • Access To Future Features

In The Press

Originality.AI has been featured for its accurate ability to detect GPT-3, Chat GPT and GPT-4 generated content. See some of the coverage below…

View All Press
Featured by Leading Publications did a fantastic job on all three prompts, precisely detecting them as AI-written. Additionally, after I checked with actual human-written textual content, it did determine it as 100% human-generated, which is important.

Vahan Petrosyan

I use this tool most frequently to check for AI content personally. My most frequent use-case is checking content submitted by freelance writers we work with for AI and plagiarism.

Tom Demers

After extensive research and testing, we determined Originality.AI to be the most accurate technology.

Rock Content Team

Jon Gillham, Founder of came up with a tool to detect whether the content is written by humans or AI tools. It’s built on such technology that can specifically detect content by ChatGPT-3 — by giving you a spam score of 0-100, with an accuracy of 94%.

Felix Rose-Collins

ChatGPT lacks empathy and originality. It’s also recognized as AI-generated content most of the time by plagiarism and AI detectors like Originality.AI

Ashley Stahl

Originality.AI Do give them a shot! 

Sri Krishna

For web publishers, Originality.AI will enable you to scan your content seamlessly, see who has checked it previously, and detect if an AI-powered tool was implored.

Industry Trends

Frequently Asked Questions

How does Originality.AI’s plagiarism detector compare to other plagiarism detection tools on the market?

Originality.AI’s plagiarism detector stands out because of its accuracy, deep search, and use of modern advances in AI and machine learning technology. It compares text against web pages as well as academic publications and proprietary databases. We consistently update our plagiarism checker to stay ahead of the latest plagiarism tactics, ensuring that you consistently have access to a highly-effective and up-to-date tool.

Can I use Originality.AI’s plagiarism checker to detect plagiarism in academic writing and research papers?

Absolutely! Although our free plagiarism checker and online plagiarism checker tools are designed for publishers, journalists, writers and content creators, it is also designed to meet the rigorous standards needed to uphold academic integrity in writing.  Not only can it check plagiarism, but can also flag paraphrasing and content without proper citations in your research paper, helping you to avoid self plagiarism and accidental plagiarism. This makes our plagiarism detector an invaluable tool for students, researchers and educators alike.

Can I use Originality.AI to check for plagiarism and AI detection?

Yes! Our unique plagiarism checker is built to allow you the option to scan for plagiarism and readability or AI generated content or both simultaneously, giving you the freedom to ensure greater content integrity and quality. Easily check for plagiarized content while taking advantage of superior AI detection features that other plagiarism checkers simply can’t match.

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P.S. Are you a content creator? Sign up for Originality.AI today and get access to our full suite of writing tools including our comparison feature, text matches checker, readability checker and other writing enhancements to help you publish high quality, unique content.

AI Content Detector & Plagiarism Checker for Serious Content Publishers

Improve your content quality by accurately detecting duplicate content and artificially generated text.