Grammarly free plagiarism checker versus Turnitin and Quillbot plagiarism checkers -tested
TLDRThis video compares Grammarly's free plagiarism checker with Turnitin and Quillbot. The host uploads a 2000-word document to each tool. Grammarly reports no plagiarism, while Quillbot finds a 46% match with significant verbatim copying. Turnitin, without the student repository, shows a 53% similarity, and with it, a 64% match. In a test with copied content, Grammarly fails to detect plagiarism, unlike Turnitin, which scores 99% similarity. The video concludes that Grammarly may not catch all instances of plagiarism, unlike Turnitin and Quillbot.
Takeaways
- 🔍 The video compares Grammarly's free plagiarism checker with Turnitin and Quillbot.
- 📄 Grammarly claims to check against 16 billion web pages for plagiarism.
- 🚫 Grammarly's checker reported no plagiarism for a document that Quillbot and Turnitin found significant matches in.
- 🔑 Quillbot detected 46% match with 21.7% identical copying and 24.3% minor changes.
- 🎯 Turnitin found a 64% similarity score for the same document, indicating direct copying and paraphrasing.
- 🔄 Turnitin also scans student repositories, which can affect the similarity score.
- 🆚 In a test with a copied text, Grammarly reported no plagiarism, while Turnitin showed a 99% similarity score.
- 🔄 Grammarly's results were inconsistent, sometimes reporting plagiarism and other times not, even with the same content.
- ⏱ Quillbot takes longer to assess plagiarism but provides detailed highlighting and source locations.
- 💡 Turnitin's results are more aligned with Quillbot's, showing higher similarity percentages.
- 📚 In a final test with an 8,000-word document, Grammarly reported no plagiarism, while Turnitin and Quillbot found high percentages of identical content.
Q & A
What is Grammarly's claim about its free plagiarism checker?
-Grammarly claims that its free plagiarism checker compares documents to 16 billion web pages to detect plagiarism.
How does Grammarly's plagiarism checker perform when tested with a 2000-word document?
-When tested with a 2000-word document, Grammarly's plagiarism checker reported no plagiarism found.
What percentage of similarity did Quillbot's plagiarism checker report for the same document tested on Grammarly?
-Quillbot's plagiarism checker reported a 46% match, with 21.7% considered identical verbatim copying and 24.3% considered minor changes.
What additional feature does Turnitin have that Grammarly's and Quillbot's plagiarism checkers do not mention?
-Turnitin has the ability to scan the student repository, which includes submissions from universities where Turnitin is used.
What was the similarity score reported by Turnitin for the same document that Grammarly claimed had no plagiarism?
-Turnitin reported a similarity score of 64% for the document, indicating a significant amount of direct copying or paraphrasing.
How did Turnitin's similarity score change when the student repository was not included in the scan?
-When the student repository was excluded, Turnitin's similarity score dropped to 53%, still higher than Quillbot's and Grammarly's results.
What was the outcome when the same text was submitted to Grammarly's plagiarism checker multiple times?
-Grammarly's plagiarism checker initially reported no plagiarism found, but upon retesting, it sometimes reported plagiarism and other times did not, indicating inconsistent results.
What was the similarity score when a paragraph copied verbatim from a source was tested on Grammarly?
-Grammarly reported no plagiarism found even when a paragraph copied verbatim from a source was tested.
How did Turnitin and Quillbot perform when testing a large document that was a verbatim copy from a public source?
-Turnitin reported a similarity score of 100%, while Quillbot found 91.2% as identical, indicating that both tools detected the plagiarism effectively.
What is a potential limitation of Quillbot's plagiarism checker as mentioned in the video?
-A potential limitation of Quillbot's plagiarism checker is that it may not always locate the original sources from paid or institutional sites, focusing more on free sources.
What is the overall conclusion about Grammarly's plagiarism checker based on the tests conducted in the video?
-The overall conclusion is that Grammarly's plagiarism checker may not be as effective as Turnitin or Quillbot, as it did not consistently detect plagiarism in the tests conducted.
Outlines
🔍 Comparing Plagiarism Checkers: Grammarly vs. Turnitin vs. Cobot
The video explores the effectiveness of different plagiarism detection tools by comparing Grammarly's free plagiarism checker to Turnitin and Cobot. The narrator uploads a document to Grammarly, which claims no plagiarism despite the document being over 2000 words. In contrast, Cobot identifies a 46% match, suggesting significant verbatim copying and minor changes. Turnitin, which also scans student repositories, reports a 64% similarity score. The narrator then conducts additional tests with different texts, including one with content copied directly from an online source. Grammarly consistently reports no plagiarism, while Turnitin consistently finds high similarity percentages, indicating potential plagiarism. The video concludes with a test using an entire conference paper, which Grammarly fails to flag as plagiarized, despite it being a verbatim copy available in the public domain. The narrator expresses concerns about the reliability of Grammarly's plagiarism checker and highlights the differences between Cobot and Turnitin in terms of the sources they identify.
📊 Plagiarism Detection Discrepancies and Considerations
In the second paragraph, the narrator discusses the discrepancies in plagiarism detection results among Grammarly, Turnitin, and Cobot. They express concerns about the speed at which Grammarly provides results and the fact that it did not detect plagiarism in an 8000-word document that was a verbatim copy from a public source. Turnitin, on the other hand, accurately identifies the document as 100% copied. Cobot takes longer to process but finds a 91.2% match, which is close to the expected 100% due to the document being in the public domain. The narrator points out that while Cobot and Turnitin have differences in the sources they locate, both are more effective than Grammarly in detecting plagiarism. The video ends with a cautionary note about relying solely on Grammarly's plagiarism checker and a reminder that the tools are not identical in their detection capabilities.
Mindmap
Keywords
Plagiarism Checker
Grammarly
Turnitin
Quillbot
Verbatim Copying
Minor Changes
Student Repository
Public Domain
Academic Misconduct
IEEE Library
Highlights
Grammarly offers a free plagiarism checker that compares documents to 16 billion web pages.
The same document uploaded to Quillbot showed a 46% match, indicating significant verbatim copying.
Quillbot identified the sources of copied text, allowing users to see the original content.
Turnitin reported a 64% similarity score for the same document, suggesting direct copying or paraphrasing.
Turnitin also scans the student repository, which includes university submissions.
Disabling the student repository in Turnitin reduced the similarity score to 53%.
Grammarly's plagiarism checker failed to detect plagiarism in a document known to be copied from the internet.
Turnitin flagged the same document as possibly plagiarized with a 64% similarity score.
When copying content word for word from a single source, Grammarly initially reported no plagiarism.
Running the test multiple times on Grammarly yielded inconsistent results regarding plagiarism detection.
Turnitin consistently showed a 99% similarity score for the verbatim copied content.
Quillbot took longer to assess plagiarism but found a 91.2% match for the identical content.
Quillbot's sources are free and accessible, unlike Turnitin's which may require payment or institutional access.
Grammarly's quick results raise concerns about the thoroughness of its plagiarism checks.
Turnitin's 100% match for an eight-page conference paper indicates verbatim copying from a public source.
Quillbot's 91.4% match for the same paper is close to the expected 100%, despite it being in the public domain.
Grammarly's plagiarism checker may not detect all instances of plagiarism, as shown in the tests.