Artificial Intelligence

Can Copyleaks detect Quillbot? Facts You Should Know!

06/02/2025
by Zoran Trimmel
Can Copyleaks detect Quillbot​? Facts You Should Know!
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Copyleaks and QuillBot, another battle between a smart AI-detection platform and a popular rephrasing tool. Still, the question is: Can Copyleaks detect Quillbot? Well, the short answer is yes, but let’s break it down a bit more!

Can Copyleaks detect Quillbot?

Can Copyleaks Identify Quillbot Content as AI-Generated?

Yes, in many cases, Copyleaks can detect content processed by Quillbot. This is because Copyleaks analyzes writing patterns, style, and structure to flag text that may have been generated or heavily paraphrased by AI, though detection success depends on how naturally the content was rewritten.

To support this, we’ve made a quick text as shown below. Here, we had QuillBot humanize a random text generated by ChatGPT. As we got the result, we put it into Copyleaks’ box to check its originality.

Using QuillBot Humanizer To Renew Content

Using QuillBot Humanizer To Renew Content

Result? It was flagged as 100%-AI-generated content.

Copyleaks Flagged QuillBot-humanized Text as AI Content

Copyleaks Flagged QuillBot-humanized Text as AI Content

Can Copyleaks Detect Quillbot Paraphrased Content as Plagiarism?

Another yes! Copyleaks can often detect significant similarities even after Quillbot paraphrasing. While Quillbot changes sentence structure and swaps synonyms, it doesn’t always produce fully original ideas. As a result, the output can still resemble existing texts online and get flagged. Below is an example where unrelated links were detected.

Copyleaks Spotted Plagiarism on QuillBot-paraphrased Text

Copyleaks Spotted Plagiarism on QuillBot-paraphrased Text

How QuillBot Paraphrases Text:

As many other paraphrasing tools, Quillbot uses AI to rephrase sentences while keeping the same meaning. It has different modes, from Standard to Creative, that adjust the tone and complexity of your text. Here’s how it works:

  • Synonym Swap: QuillBot replaces certain words with synonyms for a fresh twist
  • Sentence Remix: The tool rearranges sentence order to change the flow
  • Mixing: It combines synonym swapping with sentence restructuring for better results

How Does Copyleaks Detect Plagiarism?

Can Copyleaks Detect QuillBot? - Its Detection Dashboard

Can Copyleaks Detect QuillBot? – Its Detection Dashboard

Copyleaks offers a unique feature for checking plagiarism, which scans your text against billions of online sources to identify exact matches, paraphrased content, and style hints. More specifically, it uses several clever methods to identify plagiarism. Regarding the steps of this process, we’ve summarized them below:

  1. Uploading Text: You simply submit your document (text, files, code, URL, etc.)
  2. Scanning: The platform checks your text against a massive database of online content, academic work, and past scans
  3. Flagging: If it finds matching sections, it highlights them for you to review
  4. Report Generation: You will receive a detailed report that shows the amount of duplicated content and identifies the original sources

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We Tested 2 QuillBot Modes: Copyleaks AI Plagiarism Results

To give you a clearer picture, we ran some tests using Copyleaks’ AI Plagiarism and Quillbot’s paraphrased text in two different modes. Let’s see the results:

Case #1: Standard Mode

First, we took a paragraph from a blog post and used Quillbot’s Standard mode to paraphrase it.

Rephrasing Text Using QuillBot Standard Mode

Rephrasing Text Using QuillBot Standard Mode

Then, we submitted the rephrased text to Copyleaks. Unfortunately, the platform detected a high level of similarity (over 83%) and highlighted sections that were potentially plagiarized.

Copyleaks Detected Plagiarism on QuillBot Text

Case #2: Fluency Mode

Next, we used Quillbot’s Fluency mode on the same text.

Copyleaks Detected Plagiarism on QuillBot Text

Copyleaks Detected Plagiarism on QuillBot Text

Again, Copyleaks still found a significant match, even higher than the standard mode. This shows that QuillBot’s paraphrasing isn’t an ideal way to avoid plagiarism detection.

QuillBot-Rephrased Text Being Flagged by Copyleaks

QuillBot-Rephrased Text Being Flagged by Copyleaks

5 Proven Strategies to Outsmart AI & Plagiarism Detectors

If you want to reduce the chances of your content being flagged while still keeping it engaging and high-quality, here are some helpful tips to follow:

  1. Incorporate Personal Insight: Don’t just depend on AI to write for you. Personal insights are keys that can make your content “Green”. It’s all about sharing your thoughts, experiences, examples, and so on.
  2. Use AI Humanize Tools: Focus on adding personal insights and refining your content to make it sound natural and original. While AI tools can help adjust tone and style, relying solely on them to bypass detectors isn’t recommended. If needed, you can explore tools like Undetectable AI or StealthWriter to support the process.
StealthWriter Humanizing Tool

StealthWriter Humanizing Tool

  1. Fact-check and edit: It’s crucial to ensure the information you present is accurate. Fact-checking tools like the one from Originality.ai can help you identify and correct any errors and out-of-date facts, hence avoiding red flags for automated content.
  2. Citation Source: Inserting citations to the referred data, quotes, or ideas from others not only makes your content more trustworthy but also helps reduce plagiarism risks. There’s no need to add them manually. Instead, use tools like Paperpal to help you generate quick, accurate results.
  3. Proofread and refine: Last but not least, AI-powered editing tools like editGPT will give your content a final touch. That’s about fixing grammar, punctuation, and style issues, making your writing polished.

Keep in mind that no AI detection tool is flawless — false positives and false negatives may occur. That’s why adding human review and context is always essential to ensure content quality and originality!

Wrap it up

So, can Copyleaks detect content created with Quillbot? Yes! Copyleaks can flag both AI-generated text and paraphrased content, especially if it hasn’t been humanized.

However, if you know ways to combine paraphrasing with a personal touch, careful editing, and proper citations, you can give it a tag of “green content” while ensuring it’s high quality.

Now, let’s get to know some AI partners that can assist your writing process. Keep browsing TechDictionary for review articles, or leave a name below, and we’ll lead you there!

FAQs


1. Can CopyLeaks detect paraphrasing?

Yes, Copyleaks can catch paraphrased content by comparing it to original sources and identifying similarities.

2. Is QuillBot able to be detected?

Yes, advanced plagiarism checkers can detect paraphrased text from Quillbot, especially if it hasn’t gone through human editing.

3. How does CopyLeaks detect AI content?

Copyleaks uses clever AI algorithms to analyze writing styles, patterns, and similarities in content to spot AI-generated text.

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Zoran Trimmel
Zoran Trimmel
Zoran Trimmel is an AI specialist who simplifies complex technical concepts. He evaluates emerging AI platforms for our technology website and produces insightful articles on AI and tech tools, thanks to his attention to detail and effective communication skills.
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