Grammarly vs QuillBot: Which Writes Better Content in 2026?

Grammarly or QuillBot? We tested both on blog posts, emails, and copy — compare output quality and pricing.

Category
Writing & Editing
Format
Head-to-head
Updated
April 5, 2026
Visit Grammarly (opens in a new tab) Visit QuillBot (opens in a new tab)
Screenshot of Grammarly interface showing grammar suggestions
Grammarly
Screenshot of QuillBot interface showing paraphrasing and grammar tools
QuillBot

How they compare

Feature
Grammarly
QuillBot
Made by Grammarly, Inc. QuillBot (Course Hero)
Category AI Assistant AI Book Writing Office & Productivity Writing & Editing Academic Writing AI Book Writing AI Creative Writing Writing & Editing
Pricing model Free Freemium Subscription Free Freemium Subscription
Platforms Android Chrome Extension Desktop App Firefox Extension +4 more API Chrome Extension Web
Built with JavaScript Machine Learning Python JavaScript Machine Learning Python
Languages English English
Based in United States United States

Greyed rows are the same for both tools.

What each one is

Grammarly

Grammarly is an AI-powered writing assistant designed to help users improve their written communication by providing real-time grammar, spelling, punctuation, and style suggestions. It integrates seamlessly with web browsers, desktop applications, and mobile devices to support writing across emails, documents, social media, and more.

Full Grammarly review

QuillBot

QuillBot is an AI-powered writing assistant designed to help users improve their writing through paraphrasing, grammar checking, summarizing, and style enhancement. It leverages advanced natural language processing and machine learning algorithms to rewrite text, correct errors, and generate concise summaries, making it a versatile tool for students, writers, and professionals seeking to enhance their written communication.

Full QuillBot review

Key features

Grammarly

  • Real-Time Grammar and Spell Check

    Detects and corrects grammar, spelling, punctuation, and syntax errors as you write.

  • Tone Detection

    Analyzes the tone of your message to ensure it matches your intended audience and purpose.

  • Plagiarism Checker

    Compares your text against billions of web pages to detect unoriginal content.

  • Writing Style Customization

    Set goals based on audience, formality, domain, and intent to receive tailored suggestions.

  • Vocabulary Enhancement

    Offers synonym suggestions and word choice improvements to enrich your writing.

QuillBot

  • Multiple Paraphrasing Modes

    Offers modes like Standard, Fluency, Creative, and Formal to tailor rewriting style.

  • Grammar and Spell Checker

    Automatically detects and corrects grammatical errors and typos.

  • Summarizer Tool

    Creates concise summaries from longer texts to save reading time.

  • Citation Generator

    Helps generate citations in various academic formats.

  • Chrome Extension

    Enables writing assistance directly within web-based editors and platforms.

Pricing

Plans as published by each vendor. Check the vendor site before buying — pricing changes.

Grammarly

  • Free $0/month

    Basic grammar, spelling, and punctuation checks with limited features.

  • Pro (monthly) $30/month

    Advanced grammar, style, tone, vocabulary suggestions, and plagiarism detection.

  • Pro (annual) $12/month (billed $144/year)

    Team management, centralized billing, style guides, and priority support for organizations.

  • Enterprise Custom pricing

QuillBot

  • Free $0/month

    Access to basic paraphrasing and grammar checking with limited character usage.

  • Premium (monthly) $19.95/month

    Unlimited character usage, faster processing, additional writing modes, and advanced features.

  • Premium (annual) $8.33/month (billed $99.95/year)

    Annual subscription with cost savings and full access to premium features.

Strengths and trade-offs

Grammarly

Strengths

  • Accurate and comprehensive grammar and style checking
  • Easy integration with multiple platforms and apps
  • Helpful explanations for suggested corrections
  • Customizable writing goals for different contexts
  • Includes plagiarism detection in premium plans

Trade-offs

  • Premium features require subscription
  • Internet connection needed for real-time suggestions
  • Limited support for languages other than English

QuillBot

Strengths

  • User-friendly interface with intuitive controls
  • Multiple paraphrasing modes for varied writing styles
  • Integrated grammar and spell checking
  • Summarization feature saves time on reading
  • Chrome extension enhances workflow in browsers

Trade-offs

  • Limited language support focused on English
  • Free plan has character limits and fewer features
  • AI output may require manual review for accuracy

Who it is for

Grammarly

  • Students and educators
  • Professional writers and editors
  • Business professionals
  • Content creators and marketers
  • Non-native English speakers

QuillBot

  • Students and educators
  • Content writers and bloggers
  • Academic researchers
  • Marketing professionals
  • Non-native English speakers

What people use it for

Grammarly

  • Grammar and Spell Checking

    Automatically detect and correct grammar, spelling, and punctuation errors in real-time across various platforms.

  • Writing Style Enhancement

    Improve clarity, tone, and style of writing with suggestions tailored to different writing goals.

  • Plagiarism Detection

    Scan text against billions of web pages to identify potential plagiarism and ensure originality.

  • Professional Communication

    Enhance emails, reports, and business documents to maintain professionalism and clear communication.

  • Academic Writing Support

    Assist students and researchers in producing error-free essays, papers, and theses.

QuillBot

  • Paraphrasing and Rewriting

    Helps users rephrase sentences and paragraphs to improve clarity and avoid plagiarism.

  • Grammar and Spell Checking

    Detects and corrects grammar, spelling, and punctuation errors to enhance writing quality.

  • Summarization

    Condenses long articles or documents into concise summaries for quick understanding.

  • Writing Enhancement

    Offers suggestions to improve tone, style, and fluency for various writing needs.

  • Academic and Professional Writing

    Supports students, researchers, and professionals in producing polished essays, reports, and papers.

Getting started

Grammarly

  1. Install and Integrate

    Add Grammarly as a browser extension, desktop app, or mobile keyboard to enable writing assistance across platforms.

  2. Write or Upload Text

    Type directly into Grammarly’s editor or upload documents for analysis.

  3. Receive Real-Time Suggestions

    Grammarly scans text instantly and highlights errors or improvements with explanations.

  4. Apply Corrections and Adjustments

    Accept or ignore suggestions to refine your writing according to your style preferences.

QuillBot

  1. Access the Platform

    Visit quillbot.com or install the Chrome extension to start using the tool.

  2. Input Text

    Paste or type the text you want to paraphrase, summarize, or check.

  3. Select Mode

    Choose the desired function such as Paraphrase, Summarize, or Grammar Check.

  4. Customize Settings

    Adjust writing modes or summary length according to your needs.

  5. Review and Edit

    Review the AI-generated output and make any necessary manual adjustments.

Common questions

Yes, Grammarly offers a free version with basic grammar and spelling checks. Premium plans unlock advanced features.

Yes, QuillBot offers a free plan with limited features and character usage.

Grammarly requires an internet connection to process text and provide suggestions.

Yes, it includes a grammar and spell checker to improve writing accuracy.

Yes, plagiarism detection is available in the Premium and Business plans.

Currently, QuillBot primarily supports English.

Grammarly supports web browsers, desktop apps for Windows and Mac, Microsoft Office add-ins, and mobile apps for iOS and Android.

No, QuillBot requires an internet connection to access its AI-powered features.

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