Review Your Document Before Submission with CopyKiller’s Plagiarism and AI Generation Checks

After writing assignments, theses, or reports, you might pause before clicking the submit button.

“Did I forget to cite any sources for the parts I quoted?”
“How should I verify sections where generative AI was used?”

To enhance document completeness, it’s essential to check not only for spelling and phrasing but also to ensure there are no instances of plagiarism due to missing citations or sections suspected of being written by generative AI.

CopyKiller allows you to verify both of these aspects through its Plagiarism Check and AI Generation Check.

Now, after creating a document in Hancom Office HWP, you no longer need to visit a separate website; you can use CopyKiller directly through Hancom Addons.

Plagiarism Check vs. AI Generation Check: What’s the Difference?

(Source: CopyKiller Official Manual)

While Plagiarism Check and AI Generation Check may seem similar, they serve different purposes.

The Plagiarism Check compares your document against CopyKiller’s comparison data to identify identical sentences from other sources and their origins.

CopyKiller compares documents based on over 10 billion data points, utilizing a comparison database that includes domestic theses and academic materials. The check results show the plagiarism rate along with the sources.

Conversely, the AI Generation Check analyzes the document’s text to identify sentence areas highly likely to have been written by generative AI, such as ChatGPT, Gemini, or Claude.

Therefore, the roles of the two checks are clearly distinct.

Category	Plagiarism Check	AI Generation Check
Primary Purpose	Verifies plagiarism against other sources	Verifies potential AI authorship
Key Results	Plagiarism rate, plagiarized sentences, comparison sources	Sentence areas with high probability of AI authorship
How to Use	Review citations, sources, and plagiarized expressions	Identify and review suspected AI-generated areas

It is easy to understand that Plagiarism Check and AI Generation Check are tools that examine documents from different perspectives.

If You’ve Used Generative AI, Double-Check with the AI Generation Check

As generative AI tools like ChatGPT, Gemini, and Claude are increasingly used in writing, criteria for AI usage in assignments and theses are becoming more important.

CopyKiller’s AI Generation Check allows you to identify areas in your document that are highly likely to have been written by generative AI.

If a specific sentence is flagged as a suspected AI-generated area in the check results, rather than judging the document solely on that result, it is necessary to review which sentences were flagged as suspicious.

It is especially advisable to review these results in conjunction with any specific generative AI usage guidelines set by your school or institution.

The AI Generation Check provides reference information to identify areas with a high probability of AI authorship, and it is not appropriate to use the check results alone to definitively determine the use of a specific AI.

Now, Check Your Documents with CopyKiller While Writing in HWP

Previously, after writing a document in HWP, you had to access the CopyKiller website, upload the document, and run the check. Now, you can use CopyKiller within your document creation workflow in HWP via Hancom Addons – CopyKiller.

CopyKiller is an external partner service, requiring login with a CopyKiller account; integrated login with a Hancom account is not currently supported. Subscription and payment terms, as well as the scope of each check, follow CopyKiller’s usage policy. Plagiarism Check and AI Generation Check may have different execution methods or fees, so please check the information for your account in advance.

Hancom Addons Add-on Selection and Installation Guide Image (Source: Hancom Addons)

From Assignments to Theses: The Final Review for Better Writing

Example of CopyKiller’s Check Display

Generative AI has become a natural tool in the writing process. It can be used in various ways, such as organizing ideas, summarizing materials, or helping to start a difficult piece of writing.

What is important is not whether AI was used, but how you leveraged AI to complete it as your own writing.

CopyKiller helps you review your self-written documents once more through its Plagiarism Check and AI Generation Check, allowing you to confirm whether any parts require citation or if you have sufficiently understood and refined AI-assisted content into your own thoughts.

The check results serve as reference material to highlight areas for further review. By re-reading the flagged sentences and making necessary revisions, you can further refine your document to a higher level of completeness.

Moving beyond simply utilizing AI effectively, to completing the output as your own writing. Use CopyKiller’s Plagiarism Check and AI Generation Check as your final review tools before submission.

Frequently Asked Questions about Using CopyKiller

From Document Creation to Submission, More Conveniently Within HWP

The process of creating a good document doesn’t end the moment you finish writing.

A document is truly complete for submission only after you’ve reread the content, verified necessary sources, and checked for similar expressions to other materials or areas with a high probability of AI authorship.

Now, you no longer need to seek out a separate service every time you want to use CopyKiller; you can utilize CopyKiller within your document creation workflow in HWP via Hancom Addons.

Write your document in HWP, then double-check it with CopyKiller’s Plagiarism and AI Generation Checks before submission.

Start CopyKiller in Hancom Addons →

CopyKiller is Korea’s leading document verification service, used for verifying theses, assignments, and reports since its launch in 2011. Usage terms can be found on the CopyKiller official website, and HWP integration methods can be found in Hancom Addons. If you are installing Hancom Addons for the first time, also refer to Hancom Addons: Adding Essential Features to HWP – From Service Selection to Installation.