Grammarly free plagiarism checker versus Turnitin and Quillbot plagiarism checkers -tested
TLDRThis video compares Grammarly's free plagiarism checker with Turnitin and Quillbot. The test involves uploading various documents, including one with verbatim copying, to see how each tool detects plagiarism. Grammarly consistently reports no plagiarism, while Turnitin and Quillbot identify significant matches, with Turnitin even scanning student repositories. The video highlights potential limitations of Grammarly's checker, suggesting it may not catch all instances of plagiarism.
Takeaways
- 🔍 The video compares the effectiveness of Grammarly's free plagiarism checker against Turnitin and Quillbot.
- đź“„ Grammarly's plagiarism checker claims to compare documents to 16 billion web pages.
- đźš« In the test, Grammarly reported no plagiarism found for a document that Quillbot and Turnitin identified as having significant matches.
- đź“Š Quillbot showed a 46% match, with 21.7% identical copying and 24.3% minor changes.
- 🎯 Turnitin, with the student repository enabled, reported a 64% similarity score for the same document.
- 🏫 Turnitin also scans student submissions at universities, which can affect the plagiarism detection results.
- 🔄 The video demonstrates that scanning the same text multiple times with Grammarly can yield inconsistent results.
- đź’Ż When testing with a text copied verbatim from a single source, Turnitin showed a 99% similarity score, while Grammarly still reported no plagiarism.
- đź“š In a final test with an 8,000-word conference paper available in the public domain, Grammarly found no plagiarism, whereas Turnitin and Quillbot identified it as copied.
- ⚠️ The video cautions that Grammarly's plagiarism checker may not detect all instances of plagiarism, as demonstrated by the tests.
Q & A
What is the purpose of this video?
-The video compares the effectiveness of plagiarism checkers: Grammarly, Turnitin, and Quillbot, by testing them on the same documents.
How many web pages does Grammarly claim to compare in its plagiarism check?
-Grammarly claims to compare submitted content against 16 billion web pages.
What were the results when the document was checked with Grammarly's plagiarism checker?
-Grammarly found no plagiarism in the document, despite it being over 2,000 words long.
What plagiarism percentage did Quillbot's plagiarism checker identify in the same document?
-Quillbot found a 46% match, with 21.7% considered identical verbatim copying and 24.3% considered minor changes.
How does Turnitin's plagiarism result compare to Quillbot’s for the same document?
-Turnitin detected 64% similarity, showing direct copying and paraphrasing in the document.
What happened when a 100% copied text was tested with Grammarly?
-Initially, Grammarly detected no plagiarism in the 100% copied text. After rescanning, it inconsistently found plagiarism in subsequent tests.
How does Turnitin handle its plagiarism comparison differently from Grammarly and Quillbot?
-Turnitin compares documents not only against public sources but also against a student repository, which includes university submissions. This provides a broader comparison than Grammarly or Quillbot.
What was the result when a conference paper was tested with Grammarly?
-Grammarly found no plagiarism in the conference paper, even though it was over 8,000 words and publicly available.
What were Quillbot’s findings when checking the same conference paper?
-Quillbot found 91.2% of the paper identical, which aligns more closely with Turnitin’s detection than Grammarly’s.
What does the video suggest about the reliability of Grammarly’s free plagiarism checker?
-The video suggests that Grammarly's free plagiarism checker may not be reliable as it failed to detect plagiarism in several tests, unlike Quillbot and Turnitin.
Outlines
🔍 Comparing Plagiarism Checkers: Grammarly vs. Turnitin vs. Cobot
The video presents a comparative analysis of three plagiarism detection tools: Grammarly, Turnitin, and Cobot. The host uploads a document to each tool to check for plagiarism. Grammarly's free plagiarism checker claims to scan against 16 billion web pages but reports no plagiarism found for the document. In contrast, Cobot identifies a 46% match, indicating significant verbatim copying and minor changes. Turnitin reports an even higher 64% similarity score, suggesting direct copying and paraphrasing. The video also notes that Turnitin scans a student repository, which affects its results. When this feature is turned off, the similarity score drops to 53%. The host tests Grammarly with another document and a direct copy-paste from a source, with Grammarly inconsistently reporting no plagiarism. Finally, a test with a conference paper already in the public domain shows Grammarly still reporting no plagiarism, while Turnitin and Cobot find a 100% and 91.2% match, respectively.
🕵️‍♂️ Insights on Plagiarism Detection Tools' Effectiveness
In the second paragraph, the host expresses concern about the quick results provided by Grammarly's plagiarism checker, questioning its reliability. Despite the rapid response, Grammarly fails to detect plagiarism in a document that is a verbatim copy of a publicly available conference paper. Turnitin, however, accurately identifies the document as 100% copied. Cobot also performs well, detecting a 91.2% match, which is expected to be closer to 100% given the direct copying. The host concludes by cautioning viewers that Grammarly's plagiarism checker may not catch all instances of plagiarism, as evidenced by the more comprehensive results from Turnitin and Cobot. The video highlights the differences between the tools, noting that Cobot and Turnitin source detection can vary, with Turnitin accessing paid or institutional sites that Cobot might not.
Mindmap
Keywords
đź’ˇPlagiarism Checker
đź’ˇGrammarly
đź’ˇTurnitin
đź’ˇQuillbot
đź’ˇVerbatim Copying
đź’ˇParaphrase
đź’ˇStudent Repository
đź’ˇPublic Domain
đź’ˇAcademic Misconduct
đź’ˇIEEE Library
Highlights
Grammarly's plagiarism checker claims to compare text against 16 billion web pages.
A 2,000-word document was scanned by Grammarly, which reported no plagiarism.
Quillbot's plagiarism checker found a 46% match, with 21.7% being verbatim copying and 24.3% having minor changes.
Quillbot highlighted large portions of the text as copied, showing specific sources.
Turnitin reported a 64% similarity, identifying both verbatim copying and paraphrasing.
Turnitin's score dropped to 53% when the student repository was excluded, still higher than Quillbot and Grammarly.
A second text, known to be copied, showed no plagiarism in Grammarly, but Turnitin flagged it as 64% plagiarized.
A test with text 100% copied from the internet showed inconsistent results in Grammarly; sometimes detecting plagiarism and sometimes not.
Turnitin consistently detected 99% similarity for the copied text.
A third test with an 8,000-word conference paper, entirely copied, showed no plagiarism in Grammarly.
Turnitin found 100% similarity for the same conference paper.
Quillbot found 91.2% similarity for the conference paper, highlighting most of the text.
Grammarly consistently failed to detect plagiarism across multiple tests, unlike Quillbot and Turnitin.
Quillbot and Turnitin differ in the sources they access; Quillbot focuses on free sources, while Turnitin includes paid and institutional sources.
The video concludes by warning that Grammarly’s plagiarism checker may not reliably detect all instances of plagiarism.