Grammarly free plagiarism checker versus Turnitin and Quillbot plagiarism checkers -tested
TLDRThis video compares the effectiveness of Grammarly's free plagiarism checker with Turnitin and Quillbot. The test documents, including one with verbatim copying, were scanned for plagiarism. Grammarly consistently reported no plagiarism, while Turnitin and Quillbot identified significant similarities and direct copying, with Turnitin also scanning student repositories. The video highlights the limitations of Grammarly's checker and the more comprehensive detection by Turnitin and Quillbot.
Takeaways
- 🔍 The video compares Grammarly's free plagiarism checker with Turnitin and Quillbot, testing their effectiveness on the same documents.
- ✅ Grammarly claims to check against 16 billion web pages for plagiarism.
- 📄 In the first test, Grammarly reported no plagiarism in a 2,000-word document, while Quillbot found a 46% match with significant verbatim copying.
- 🆚 Turnitin, in contrast, showed a 64% similarity score for the same document, indicating direct copying and paraphrasing.
- 🔄 When the student repository feature in Turnitin was disabled, the similarity score dropped to 53%, still higher than Quillbot's and Grammarly's results.
- 🔁 The video demonstrates that Grammarly's results can be inconsistent, sometimes failing to detect plagiarism even when re-scanning the same content.
- 💯 In a test with content copied verbatim from a single source, Grammarly initially reported no plagiarism, but upon re-scanning, it found some instances.
- 📈 Turnitin consistently showed high similarity scores, accurately detecting plagiarism in all tests, including a case with 99% similarity.
- 🕒 Quillbot took longer to process the plagiarism check but provided detailed highlighting of copied content and sources.
- 📊 The video concludes that Grammarly's free plagiarism checker may not be as reliable as Turnitin or Quillbot, especially for detecting verbatim copying.
- ⚠️ A cautionary note is given about the differences in the sources detected by Quillbot and Turnitin, with the latter accessing more authoritative and possibly paid sources.
Q & A
What is the main topic of the video?
-The main topic of the video is a comparison of plagiarism checkers, specifically Grammarly's free plagiarism checker, Turnitin, and Quillbot.
How does Grammarly's plagiarism checker claim to work?
-Grammarly's plagiarism checker claims to compare documents to 16 billion web pages to detect plagiarism.
What was the result when the same document was uploaded to Quillbot?
-Quillbot found a 46% match, with 21.7% considered identical verbatim copying and 24.3% considered minor changes.
How does Turnitin's plagiarism detection compare to Grammarly's and Quillbot's?
-Turnitin detected a higher percentage of similarity, with 64% for the same document, indicating more direct copying or paraphrasing.
What additional feature does Turnitin have that was mentioned in the video?
-Turnitin scans the student repository, which includes submissions from universities where Turnitin is used.
What was the outcome when the presenter uploaded a text with 100% copied content from one source?
-Grammarly's plagiarism checker initially reported no plagiarism found, but upon rescanning, it sometimes detected plagiarism.
What was the result when an entire conference paper was uploaded to Grammarly's plagiarism checker?
-Grammarly reported no plagiarism found, despite the paper being a verbatim copy from a public domain source.
How does the video suggest the reliability of Grammarly's plagiarism checker?
-The video suggests that Grammarly's plagiarism checker may not be as reliable as Turnitin or Quillbot, as it did not consistently detect copied content.
What is a key difference between Quillbot and Turnitin mentioned in the video?
-A key difference is that Quillbot locates free sources, while Turnitin can locate the original publication sites that may require payment or institutional access.
What is the conclusion the presenter draws about Grammarly's plagiarism checker after testing?
-The presenter concludes that Grammarly's plagiarism checker may not pick up on all instances of plagiarism and suggests being cautious when relying on it.
Outlines
🔍 Comparing Plagiarism Checkers: Grammarly vs. Turnitin vs. Cobalt
The video script discusses a comparison between three plagiarism detection tools: Grammarly, Turnitin, and Cobalt. The narrator tests each tool by uploading a document with over 2000 words and observes that Grammarly's free plagiarism checker reports no plagiarism, while Cobalt identifies a 46% match with significant verbatim copying and minor changes. Turnitin, on the other hand, flags a 64% similarity score, indicating direct copying and paraphrasing. The narrator also notes that Turnitin scans student repositories, which could affect the similarity score. In a follow-up test, Grammarly fails to detect plagiarism in a text known to be copied, while Turnitin again reports a high similarity score. The narrator concludes by testing a verbatim copied text and finds inconsistencies in Grammarly's detection, whereas Turnitin accurately identifies the plagiarism with a 99% similarity score.
📚 Testing Plagiarism Checkers with a Published Paper
In the second paragraph, the narrator uploads an 8000-word conference paper that is publicly available on platforms like ResearchGate and the IEEE Library to test the plagiarism checkers. Despite the paper being a verbatim copy, Grammarly's checker quickly reports no plagiarism, raising concerns about its reliability. Turnitin, however, accurately detects the paper as a 100% copied document. Cobalt also takes longer to process and reports a 91.2% match, acknowledging the direct copying. The narrator points out that Cobalt's sources are free and accessible, unlike Turnitin's, which might require institutional access or payment. The video concludes with a cautionary note about relying solely on Grammarly's plagiarism checker due to its inconsistent detection rates compared to Turnitin and Cobalt.
Mindmap
Keywords
💡Plagiarism Checker
💡Turnitin
💡Quillbot
💡Verbatim Copying
💡Paraphrase
💡Student Repository
💡Academic Misconduct
💡Public Domain
💡Similarity Score
💡Attribution
Highlights
Grammarly's free plagiarism checker is tested against Turnitin and Quillbot.
Grammarly claims to compare documents to 16 billion web pages for plagiarism.
A 2000-word document shows no plagiarism on Grammarly's initial scan.
Quillbot finds a 46% match rate with 21.7% identical copying in the same document.
Turnitin reports a 64% similarity score for the document, indicating direct copying.
Turnitin also scans student repositories for comparison.
Disabling the student repository in Turnitin reduces the similarity score to 53%.
Grammarly's checker fails to detect plagiarism in a text known to be copied from the internet.
Turnitin detects a 64% similarity score for the copied text.
Testing a 100% copied text, Grammarly initially reports no plagiarism.
After re-scanning, Grammarly inconsistently detects plagiarism.
Turnitin shows a 99% similarity score for the same copied text.
Quillbot takes longer to assess plagiarism but identifies 91.2% as identical copying.
An 8000-word conference paper is tested for plagiarism.
Grammarly's checker reports no plagiarism for the conference paper, despite it being in the public domain.
Turnitin finds the paper to be a 100% copy, indicating verbatim copying.
Quillbot identifies 91.4% of the paper as identical, close to the expected 100%.
Quillbot and Turnitin have differences in locating sources, with Quillbot focusing on free sources.
The video concludes with a cautionary note on relying solely on Grammarly's plagiarism checker.