Quillbot vs Grammarly: Which one is better?

published August 21, 2023 - updated January 23, 2024

Quick Overview

Quillbot and Grammarly are one of the most popular tools for students. Their features are versatile and never-ending. This time, AcademicHelp decided to put to the test their plagiarism detection feature and see if they can help both students and educators. Quillbot is a true definition of one-size-fits-all. It has many handy features for learners and it can help them detect plagiarism. For a more detailed comparison, it’s worth checking out Quillbot reviews to gain insights into user experiences. Grammarly, on the other hand, is slightly limited in both features and plagiarism detection quality. 

TOP services Our verdict A*Help Score 🔥 Updated January 2024
Service icon
AHelp Plagcheck
Best plagiarism detector 86.5/100 Get free access
Service icon
Best experience 86/100 Read review
Service icon
Best features 85.1/100 Read review
Service icon
Originality AI
Best free trial value 79.1/100 Read review
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Best price 78.6/100 Read review
Liked about Quillbot
  • Affordability
  • Fast scanning process
  • Browser extension
Liked about Grammarly
  • Convenient platform
  • Browser extension
Best fit forStudents who need to work on the academic element moreStudents who want to enhance their overall writing approach
A*Help Score⭐⭐⭐⭐
Plagiarism Detection Quality⭐⭐⭐⭐
Quillbot shows satisfactory results in plagiarism detection and can spot different text modifications
Grammarly shows deficient plagiarism detection quality
Value for money⭐⭐⭐
Quillbot is a handy service that can easily cater to students’ needs
Grammarly is a practical tool for students, content creators, and writers
Overall Experience⭐⭐⭐⭐
Quillbot offers many basic features for plagiarism detection and additional tools for a more seamless academic routine
With Grammarly, you have access to all basic tools that can help you make writing authentic
An infographic with a short Quillbot vs Grammarly comparison describing the ways these 2 services were tested and how the winner was picked

The main difference between Quillbot and Grammarly is the quality of plagiarism detection. While Quillbot can spot various modifications in written papers, Grammarly, on the other hand, is a great tool for making writing impeccable. When deciding whether to use Grammarly, you may also wonder, “Is Grammarly safe for plagiarism?” and we’re here to give you the answer. Whichever platform you choose for your academic routine, both can serve a good purpose for different aspects. 

Comparing Value for Money: Quillbot VS Grammarly

Value For Money17/2514/25
Trial & special offers44
A screenshot of scanning an essay at Grammarly
Scanning an essay on plagiarism checker at Grammar (click to see a bigger picture)

Overall Experience: Quillbot VS Grammarly

Overall Experience22/2518/25
User Experience1816
A screenshot of my scans at Quillbot
My scans at Quillbot (click to see a bigger picture)

Quillbot VS Grammarly: Which Is Better for Plagiarism Detection?

Plagiarism Detection46.1/5021.5/50
Human-written text91.2% free from plagiarism100% free from plagiarism
Internet sample99.7% of plagiarism detected3% of plagiarism detected
AI paraphrase (2 texts)82.65% of plagiarism detected19.5% of plagiarism detected
Replaced charactersMarked characters in the text0% plagiarism detectedNo flags or alerts


And the winner is Quillbot. Its accessible platforms, endless number of features, and high plagiarism detection quality make it a well-suited service for the academic environment. 

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Main Specs

> Features (to check text)
Check files
Insert text
Receive report
Word limit
Academic proofreading module (check citations and etc)
Check for free/trial
Number of free checks available
Spelling check
Grammar check
> Advanced features (to check text)
Detect AI content
Cross language search
Text compare
OCR scan
> Sources
Current Batch Files (your own docs)
Plagchecker’s database
> Price & special offers
Paid plansCheapAffordable
> Accessibility
Easy to use website
Desktop version
Trying before registration
Browser extensions
Account (do users have an account?)
Time to check worka couple of secondsa couple of seconds
Need email to register
Need phone to register
Third-party registration methods
> Support
Onboarding (how to use plagcheck)
Support chat
> Payment
Wallets (only Paypal)


Is paraphrase Grammarly better than QuillBot?

Both these tools have a paraphrase feature. However, Quillbot provides more sophisticated results in rewriting ideas and thoughts. Grammarly, on the other hand, shows good results in checking spelling and grammar for errors and mistakes. Please, remember to try each of these services on your own before making a judgment.

What is the disadvantage of QuillBot?

There are a few cons when using Quillbot. The first disadvantage is that users cannot try the plagiarism feature for free. But the good news is that the paid subscription to the service is rather affordable, it costs only $9.95 per month. Another con might be the fact that you can scan only 20 pages per session with a paid subscription.

Is QuillBot not free anymore?

Quillbot offers certain basic features for free use. In case you need to paraphrase some sentences, or check your text for grammar mistakes then users are able to do so free of charge. However, if you are in need of plagiarism detection, or you need some advanced aid, get ready to sign up for a paid subscription.

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