Quillbot vs Grammarly 2025: Which Is Better? (Ultimate Comparison)

As a writer, I know the struggle of crafting clear, error-free content. QuillBot and Grammarly are two top AI-powered tools, but they serve different purposes. QuillBot excels at paraphrasing and rewriting, while Grammarly is the go-to for grammar, spelling, and style improvements.

So, which one is right for you? In this comparison, I’ll break down their features, pricing, and best use cases to help you decide. Let’s get started! 🚀

Quillbot vs Grammarly 2025: Overview

Let me tell you about Quillbot and Grammarly so you can get to know them.

What Is Quillbot?

Quillbot is known for its amazing ability to rewrite a sentence so that it makes sense. When an error is found, the sentence is changed into a well-written, grammatically correct statement.

Using Quillbot is as smooth as using butter. You have to copy the text, paste it somewhere else, and click a button. Boom, the best-rephrased content is ready to go.

Quillbot gives you a lot of different ways to write, like standard, fluency, formal, simple, expand, shorten, and creative.

Say you are writing a letter of employment to your boss. You would want to sound formal, but you might use some informal words by accident.

In fact, you can also compare two modes in Quillbot to hear how each one sounds. This will help you choose the best sentence. It works out well for everyone.

When this happens, Quillbot saves the day by rewriting the text in a more formal style for you. You are basically getting content that AI has already written. That’s so cool!

Even if you wrote an essay but didn’t reach the word count your teacher gave you, Quillbot can help.

It has special features like “expand” and “shorten,” which literally make the pasted paragraph or sentence longer or shorter.

What else? Quillbot is supported by Google Docs, which is great for students and freelance writers since most of them use Google Docs for their school essays, writing jobs, and projects.

What Is Grammarly?

Grammarly is a tool that uses AI to help change, correct, and proofread the content you want. It also has other important features, like advanced suggestions based on the genre.

If you’ve written something with short words, Grammarly can suggest other words that fit the tone of what you’ve written. Yes, I did say that.

Grammarly also has a tone detection feature that makes it easier for writers to get instant feedback on how their writing sounds because it takes longer to read fully.

Grammarly’s powerful AI technology will take care of everything, so there will be no room for hidden mistakes in grammar, punctuation, or spelling.

Once you have Grammarly set up, you can say goodbye to all the mistakes in your writing.

Best Features of Quillbot and Grammarly:

To provide a clear picture, let’s break down the features of both tools:

1. Grammar and Spelling Check

Grammarly:	QuillBot:
Strengths: It provides real-time grammar and spelling corrections, along with detailed explanations. It also highlights complex grammatical issues and offers suggestions to improve sentence structure.	Strengths: The tool offers basic grammar and spelling corrections. Although its main function is paraphrasing, the grammar checker is a useful feature for quick reviews.
Example: If you write, “She goes to the market,” Grammarly will suggest changing it to “She goes to the market” while explaining the error in subject-verb agreement.	Example: A sentence might be corrected to “She goes to the market,” though it provides no detailed explanation for the correction.

2. Paraphrasing Capabilities

Grammarly:	QuillBot:
Strengths: Provides suggestions to improve sentence structure and clarity but lacks a dedicated paraphrasing tool.	Strengths: Excels in rephrasing sentences to enhance clarity and originality. It offers multiple modes like Standard, Fluency, Creative, and Formal, allowing users to choose the tone and style of the paraphrased content.
Example: I might suggest rephrasing “Due to the fact that” to “Because” for conciseness.	Example: The sentence “The quick brown fox jumps over the lazy dog” can be rephrased in Creative mode to “A swift auburn fox leaps over a sluggish canine.”

3. Plagiarism Detection

Grammarly:	QuillBot:
Strengths: Features a robust plagiarism checker that scans content against a vast database, ensuring originality.	Strengths: Offers a plagiarism checker, but with limitations. The free version allows up to 20 checks per month, which might not suffice for heavy users.
Example: Detects if a sentence matches text from online sources or academic papers.	Example: Similar functionality but with restricted usage.

4. Additional Tools and Features

Grammarly:	QuillBot:
Tone Detector: Analyze the tone of your writing to ensure it matches the intended audience.	Citation Generator: Automatically creates citations in various formats, which is beneficial for academic writing.
Style Suggestions: Provides recommendations to improve readability and engagement.	Translator: Offers translation services in over 30 languages.
	Summarizer:Condenses lengthy articles or papers into concise summaries.

5. User Interface and Experience

Grammarly:	QuillBot:
Design: Features a clean, intuitive interface with real-time suggestions.	Design: User-friendly interface that provides easy access to various tools. Integrations include extensions for Chrome and Microsoft Word, improving accessibility.
Integrations: Seamlessly integrates with platforms like Microsoft Word, Google Docs, and various browsers.

6. Pricing

Grammarly:	QuillBot:
Free Version: Offers basic writing suggestions.	Free Version: Provides access to standard paraphrasing and summarization tools.
Premium Version: Priced at $12/month, it includes advanced features like style improvements, tone adjustments, and plagiarism detection.	Premium Version: Available at $8.33/month, unlocks all modes, increased word limits, and additional features.

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Main Differences: Quillbot vs Grammarly (My Experience)

Having read about Quillbot and Grammarly’s features, I wondered what makes them unique. The main differences between Quillbot and Grammarly are as follows.

1. Grammar checking

Grammarly offers the best AI-powered grammar detection, but Quillbot is no doubt a grammar-checking tool.

Although Quillbot tried its best to catch the errors, Grammarly won.

2. SEO optimization tools

In Quillbot, you can use SEO optimization tools to optimize your written content, a powerful feature not present in Grammarly.

Quillbot’s SEO tool greatly aided me with the optimization process as a writer.

Winner – Quillbot

3. Paraphrasing tool

There is an extraordinary feature in Quillbot that has been the talk of the town.

The paraphrasing tool in Quillbot is better than Grammarly when it comes to rephrasing concise words. In addition, you can rephrase sentences only if Grammarly detects them, but Quillbot allows general rephrasing.

Winner – Quillbot

4. Plagiarism Checking

Similar to Quillbot’s paraphrasing tool, Grammarly offers a highly efficient plagiarism checker.

Grammarly detects duplicate content immediately and replaces it with original content.

Winner – Grammarly

5. Summarizer Tool

Grammarly doesn’t have a tool like Quillbot’s summarizer, which cuts down on the amount of work you have to do and makes things easier for you.

Even though Grammarly has other interesting tools to back up your content, the summarizer tool is an extra feature that other competitors are less likely to have.

The summarizer tool helped me see the big picture of what I had written. I didn’t have to read the whole article because I used the summarizer tool. It only took me two minutes.

Winner: QuillBot

6. Addons & Extensions

The best way to check documents through Quillbot and Grammarly is through add-ons and extensions. Quillbot does not offer as many extensions and plug-ins as Grammarly.

Grammarly is available for MS Word, Firefox, Google Docs, and Chrome extensions.

Furthermore, Quillbot offers an MS Word extension, a Chrome extension, and an add-on for Google Docs. As a result, you don’t need to visit the official website repeatedly to check your documents, which saves you a lot of time.

Winner: tie

Best Suitability of Quillbot and Grammarly

Quillbot and Grammarly can be used at the same time for different reasons and tasks because they both have different features and benefits.

You might need to look at some criteria and make a smart choice about whether Quillbot or Grammarly is right for you. Let me give you some advice based on what I know:

Who should use Quillbot?

The Quillbot is suitable for the following:

• Publishers who need SEO optimization tools.
• For students who want to write essays, a paraphrasing tool is essential.
• If you want to expand or shorten your content in order to reach the word count.
• To provide an overview of specific content, people need a summarizer.

Who should use Grammarly?

The following situations are suitable for Grammarly:

• Whoever wants a grammar-based writing assistant that integrates AI.
• Effective grammar-checking tools are essential for writers, bloggers, and content marketers.
• Content publishers who want to find duplicate content should be sure that the content they publish is 100% plagiarism-free. 
• Grammarly is a great tool for marketing agencies who need proofreaders and editors.

Quillbot vs Grammarly: Ease of Use

Since both Quillbot and Grammarly can be accessed through browser extensions, Microsoft Word, and Google Docs, there aren’t many differences in how easy they are to use.

I find that when I use the Grammarly extension, it makes my computer or laptop work slowly, so I prefer using Grammarly API only. I didn’t find this kind of problem using the Quillbot extension. 

Tools like Quillbot’s summarizer helped me a lot with getting an overview of my content, and Grammarly made sure to show the report of word improvement with analytical results.

Quillbot and Grammarly both have free versions, so you can use both at the same time. I did that, and it worked, especially with tools like tone detection and lengthening and shortening.

Pros & Cons of Quillbot vs Grammarly:

Quillbot:

Grammarly

Quick Links:

• QuillBot Review
• Rytr Review
• ProWritingAid Review
• Jasper AI Review
• Copy.ai Review

Conclusion: Quillbot vs Grammarly 2025

Both Grammarly and QuillBot are powerful writing tools, but the best choice depends on your needs. If you want advanced grammar, tone suggestions, and plagiarism detection, Grammarly is the better option. However, if you need paraphrasing, summarization, and an affordable AI writing assistant, QuillBot is the way to go.

For flawless writing and grammar correction, go with Grammarly. If you’re looking to rewrite and refine content, choose QuillBot. 🚀