Grammarly vs QuillBot (2025): Comparison & Discounts

Grammarly and QuillBot are two of the best writing assistants out there.

But which tool is better for you?

Let’s compare.

Grammarly vs QuillBot

Grammarly

5.0

Grammarly beats QuillBot across the board when it comes to grammar checking. Grammarly is a full-fledged writing assistant that spots writing issues, offers one-click suggestions, and helps writers improve their writing skills over time.

If you need a reliable grammar checker for eliminating writing mistakes and improving the reader’s experience, choose Grammarly.

Save 25% on Grammarly

QuillBot

4.0

QuillBot, on the other hand, is primarily a paraphrasing tool with grammar checking thrown in. Its main feature is rewriting text using specific modes, like formal, simple, creative, and shorten.

If you need a paraphraser to create tons of content quickly, use QuillBot.

Save 20% on QuillBot

Grammarly’s Key Features

• Check for grammatical and spelling mistakes
• Improve your writing tone and readability
• Check your content for plagiarism
• Generative AI for content and writing improvements
• Custom writing goals
• Chrome extension, MS Word add-on, desktop app, and mobile app
• $30 per month (22.50 per month with 25% discount)

QuillBot’s Key Features

• Check for grammatical and spelling mistakes
• Multi-lingual paraphrasing tool
• Check your content for plagiarism
• Basic generative AI tool for outlines and text suggestions
• Custom paraphrasing goals
• Chrome extension, MS Word add-on, and desktop app
• $9.95 per month

Grammarly overview

Grammarly uses AI to identify and correct issues in written content, including spelling mistakes, wrong prepositions, unclear sentences, redundancy, vagueness, and more. It also helps people write more effectively and communicate more clearly with tone suggestions in various styles—be it business, academic, or creative writing.

Grammarly features:

• Spelling check: Identify glaring spelling errors.
• Grammar check: Correct grammatical errors like subject-verb agreement, verb tense, and punctuation errors.
• GrammarlyGo: Use generative AI to create outlines, round up ideas, instantly produce text, enhance your draft, and more.
• Plagiarism check: Spot plagiarized content and insert proper citations or revise text.
• Vocabulary enhancement: Use alternative words to improve your writing’s clarity and effectiveness.
• Tone detection: Analyzes your writing’s impact on the audience.
• Writing style suggestions: Work on sentence structure and readability.

QuillBot overview

QuillBot also uses AI to rewrite and paraphrase written content. It analyzes the text’s meaning and generates a new version—conveying the same message in a different way.  

QuillBot’s paraphraser features different modes to guide you in adjusting your writing style:

• Simple: Create easy-to-understand text.
• Formal: Write in a professional and more sophisticated voice.
• Shorten: Show clarity and remove extra words.
• Expand: Make sentences juicier—add depth and detail.
• Creative: Present ideas in a unique way.

Which Tool is Best for Proofreading: Grammarly or QuillBot?

Grammarly is, hands down, one of the best proofreading tools available on the web—much better than QuillBot. Grammarly automatically highlights writing issues and generates one-click suggestions that will help you polish your articles within minutes. 

Grammarly

Grammarly keeps your writing free from a long list of errors and issues, including agreement mistakes, punctuation errors, wrong article usage, unnecessary verbs, redundancy, repeated words, and non-confident language. It also provides suggestions for improving the overall clarity, engagement factor, and delivery of your writing. 

Grammarly also generates a performance score that measures overall quality. The report then assesses advanced metrics like reading time, average sentence length, readability score, and word variety. 

Use these metrics to track and improve your writing skills in the long run.

QuillBot

QuillBot is built to restructure sentences in your writing. It’s not designed for proofreading per se, but it comes with a built-in grammar checker that detects basic writing issues.

On the flip side, QuillBot comes with a handy ‘Fix Errors’ that applies all correction suggestions in one go. Unfortunately, it’s recommended to carefully check each suggestion as QuillBot’s grammar checker often recommends shortening and rephrasing sentences.

Which Tool is Best for Paraphrasing: Grammarly or QuillBot?

QuillBot is better equipped than Grammarly for a wider range of paraphrasing tasks, thanks to its paraphrasing modes and “synonyms” slider. Although Grammarly’s premium version offers full-sentence rewrites, it lacks features for on-demand paraphrasing. 

Grammarly

Grammarly Free doesn’t have a paraphrasing feature. But with Grammarly Premium, you can take advantage of full-sentence rewrites to instantly improve the flow and quality of your writing in a snap.

For the most part, Grammarly only offers rewriting suggestions focused on better clarity, engagement, or delivery. 

QuillBot

QuillBot offers an advanced, on-demand paraphrasing tool that works on entire documents. It rewrites text to create new versions that convey the same meaning as the original content. 

To use it, copy and paste your text into the QuillBot editor or click ‘Upload Doc’ to import your article from your device.

Select underlined text and click ‘Rephrase’ for a list of paraphrasing suggestions.

Which Tool is Best for SEO Features: Grammarly or QuillBot?

When it comes to SEO, both Grammarly and QuillBot bring something unique to the table. Grammarly can affect SEO by maximizing content quality and readability, whereas QuillBot can help you produce quality content in bulk for link building and other SEO-related purposes. 

Grammarly

The goal of Grammarly is to help you tighten your writing. But while it definitely makes the quality of your writing better, it’s not specifically designed for SEO.

Below are ways it can advance SEO efforts:

• Improve readability
• Improve your credibility
• Make the writing more professional
• Enhance user experience 
• Increase the chances of ranking for long-tail keywords

Grammarly also comes with an advanced plagiarism checker that ensures you’re publishing 100% original content. Just click ‘Plagiarism’ at the bottom of the writing assistant and wait for the editor to highlight potentially plagiarized text.

QuillBot

QuillBot is also not designed for SEO. But like Grammarly, it can streamline the content creation process — helping you earn higher rankings in Search Engine Results Pages (SERPs).

Below are ways it can advance SEO efforts:

• Generate unique content quickly
• Cover different topics and attract new traffic
• Create new content ideas
• Spice up existing content

QuillBot also helps you create 100% unique articles with its plagiarism checker. However, you can only scan a limited number of pages unless you buy more credits. 

QuillBot’s plagiarism checker is also not as aggressive as Grammarly’s plagiarism checker. While inspecting the same text, QuillBot was not able to identify potentially plagiarized text that Grammarly detected. 

Which Tool has a Better Generative AI Tool?

GrammarlyGo — Grammarly’s built-in AI writing assistant — is more flexible, powerful, and user-friendly than QuillBot’s AI features. It’s also seamlessly baked into the main Grammarly editor, unlike QuillBot that requires you to launch a separate tool for generative AI.

Grammarly

GrammarlyGo functions like a built-in AI chatbot, which follows your instructions to the letter. You can use it to generate ideas, outlines, content sections, or even entire drafts.

If you have existing text in your document, GrammarlyGo can also help you improve your draft based on your preferred writing tone.

QuillBot

QuillBot’s generative AI tool can be accessed through the ‘Co-Writer’ menu.

To start a new AI project from scratch, just enter a prompt under “Smart Start.” Feel free to specify the content type you’re creating (blog, essay, or research paper) in the drop-down menu.

In terms of capabilities and usefulness, GrammarlyGo definitely beats Co-Writer. Not only is the chatbot-style interface easier to work with, Grammarly’s generative AI tool produces more logical and engaging outputs.

GrammarlyGo also lets you tailor the generative AI model to your brand voice. This is a huge plus if you’re planning to integrate AI-powered content into your writing workflow.

Which Tool Offers The Best Customer Support?

Compared to QuillBot, Grammarly has better customer support options, including live chat, support tickets, and social media, as well as an on-demand human writing assistance service. QuillBot’s primary support channels are its email page and social media channels.

Grammarly

Grammarly offers a variety of customer support options to address questions or issues. Some of the options available include:

• Knowledge base
• Email
• Ticket-based support
• Live chat 
• Social media
• Grammarly blog
• Active community forum

Grammarly also lets you source writing assistance from human proofreaders on-demand. Choose between “correctness only” or “correctness and clarity,” then select the turnaround time you want. 

The faster the TAT, the more expensive your request gets.

QuillBot

Compared to Grammarly, QuillBot has fewer customer support options. They do, however, offer a generous library of self-learning resources, like the help center, student resources, and an in-depth paraphrasing guide. 

Here are QuillBot’s customer support options: 

• Email
• Student resources
• Paraphrasing guide
• Help center
• Social media

Which Tool is More Affordable: Grammarly or QuillBot?

QuillBot is definitely the more affordable tool, with plans starting at $9.95 per month. Grammarly’s monthly price starts at $30 with monthly billing, but it can be reduced to $12 per month if you pay annually. 

Both Grammarly and QuillBot offer free versions with limitations.

Get a 25% discount on any Grammarly Premium plan using this link or Get a 20% discount on any QuillBot premium plan using this link.

Grammarly vs QuillBot: Frequently Asked Questions

Grammarly vs. QuillBot: Choose the best writing assistant for you

Grammarly and QuillBot are among the best writing assistants for writers, students, and teachers. But there can only be one winner in this post. 

Overall, Grammarly gives the best bang for your buck, especially if you don’t need a paraphrasing feature. 

If you need a comprehensive proofreading tool to iron out errors in your writing, Grammarly is clearly the better choice. 

But if you REALLY need to paraphrase text and write content faster, QuillBot may be a more suitable option.