Grammarly vs Quillbot

Side-by-side comparison of features, pricing, and ratings

Updated
Reviewed by our team on
Saved

At a glance

DimensionGrammarlyQuillbot
Pricing$12/mo Premium$19.95/mo Premium
Best forProfessional & business writingParaphrasing & academic writing
Unique featureTone detection & suggestionsParaphraser with multiple modes
IntegrationsChrome, Safari, Firefox, Edge, Office, Google DocsChrome, Edge, Safari, Google Docs, Word
Plagiarism checkerYes (Premium)Yes (Premium)
AI detectionYesYes

Choose Quillbot if your primary need is paraphrasing, citation generation, and academic writing support with a strong paraphraser. Choose Grammarly if you need robust real-time grammar, tone suggestions, and style enforcement for professional and business communication. Grammarly's tone detection and full-sentence rewrites are superior for clarity and credibility, while Quillbot excels in rewriting and summarizing.

Grammarly
Grammarly

AI writing assistant for clear, credible text across apps and languages

Visit Website
Quillbot
Quillbot

AI writing suite for paraphrasing, grammar, and originality checks.

Visit Website
Pricing
Freemium
Freemium
Plans
$0/mo
$12/member/mo billed annually ($30/mo month-to-month)
Contact Sales
$0/mo
$10/mo (annual) / $19.95/mo monthly
Popularity
5.3k views
6.0k views
Skill Level
Beginner-friendly
Beginner-friendly
API Available
Platforms
WebMobileDesktopPlugin
Web
Categories
✍️ Writing & Content
✍️ Writing & Content
Features
Real-time grammar and spell check
Tone detection and suggestions
Full-sentence rewrites
Plagiarism checker
AI text generation with prompts
AI Humanizer agent
AI Detector agent (GPTZero acquisition)
Multilingual corrections (Spanish, French, Portuguese, German, Italian)
Translation in 19 languages (Mandarin, Japanese, etc.)
Grammarly Docs collaborative writing surface
Context-aware AI agents in Docs
Reader Reactions preview
Brand tones enforcement
Confidential mode (Enterprise)
Data loss prevention (Enterprise)
Paraphrase text with multiple modes (Standard, Fluency, Formal, Creative, etc.)
Grammar and spelling checker with suggestions
AI detector to identify GPT-4 and Claude-generated text
Plagiarism checker against web sources
AI humanizer to make AI text sound natural
Summarizer to condense long articles
Translator supporting 30+ languages
Citation generator in APA, MLA, and Chicago styles
AI chat for brainstorming and writing assistance
AI image generator from text prompts
Presentation creator to build slide decks
ChatPDF for querying PDF documents
Background remover and AI image editor
Social media post writer for engaging posts
Cover letter generator for job applications
Integrations
Chrome
Safari
Firefox
Edge
Microsoft Office
Google Docs
Zendesk
Grammarly for Windows
Grammarly for Mac
Grammarly for iPhone
Grammarly for iPad
Grammarly for Android
Microsoft Word
iOS
Android
macOS
Windows

Feature-by-feature

Both Quillbot and Grammarly offer core writing assistance but with different strengths. Quillbot's standout feature is its paraphraser with multiple modes (Standard, Fluency, Formal, etc.), which is excellent for rephrasing sentences and avoiding plagiarism. It also includes a dedicated AI humanizer, summarizer, translator, citation generator (APA, MLA, Chicago), and even image generation and PDF editing. Grammarly focuses on real-time grammar, spelling, punctuation, and tone detection, providing contextual suggestions for clarity, engagement, and delivery. Grammarly Pro offers full-sentence rewrites, a plagiarism checker, and an AI detector. While both have AI detection and humanizers, Quillbot's humanizer is more explicit in making AI text sound natural. Grammarly’s generative AI prompts (100 free, 2000 Pro) help kickstart writing. Quillbot lacks robust tone detection and style guides, which Grammarly excels at, especially for teams and brands. Both integrate with major browsers and docs, but Grammarly also offers desktop apps and Zendesk integration, while Quillbot adds PDF creation. For team collaboration, Grammarly Enterprise provides style guides, snippets, and analytics, which Quillbot lacks.

Pricing compared

Both follow a freemium model. Quillbot Free includes basic grammar check, limited paraphrasing, and word count. Premium is $19.95/month (billed annually) for unlimited paraphrasing, plagiarism check (50 pages/month), AI detection, summarizer, and citation generator. Grammarly Free covers essential grammar, spelling, and tone detection. Premium is $12/month (billed annually) for full-sentence rewrites, plagiarism checker, and tone suggestions. Grammarly Business is $15/user/month with style guides and analytics. Quillbot offers no team plan. For individuals, Grammarly Premium is cheaper and offers more advanced grammar features, while Quillbot Premium is pricier but provides a broader set of writing tools (paraphrasing, summarization, citation). Students may prefer Quillbot for academic writing; professionals might find Grammarly more cost-effective for everyday use. Both have limited free tiers, but Quillbot's free paraphrasing is restricted.

Who should pick which

  • College student
    Pick: Quillbot

    Quillbot's paraphraser, citation generator, and summarizer are tailored for academic writing and research papers.

  • Professional writer
    Pick: Grammarly

    Grammarly's tone detection, style suggestions, and full-sentence rewrites ensure polished, credible business communication.

  • Non-native English speaker
    Pick: Quillbot

    Quillbot's paraphraser with fluency mode helps improve sentence structure and clarity, and the translator aids understanding.

  • Marketing team
    Pick: Grammarly

    Grammarly Business offers brand tone enforcement, style guides, and analytics for consistent messaging across team content.

  • Content creator (blogger)
    Pick: Quillbot

    Quillbot's AI humanizer and image generation assist in creating original content and visuals, plus plagiarism check avoids duplication.

Frequently Asked Questions

Can Quillbot check grammar as well as Grammarly?

Quillbot has a grammar checker, but it's less robust than Grammarly's real-time suggestions, especially for tone and style.

Does Grammarly have a paraphrasing tool?

Yes, Grammarly Pro includes full-sentence rewrites, but Quillbot's paraphraser offers multiple modes and is more flexible.

Which tool is better for avoiding plagiarism?

Both have plagiarism checkers. Quillbot's paraphrasing helps rephrase sources, while Grammarly checks against web pages. Quillbot may be more proactive.

Can I use both together?

Yes, many users combine them: Quillbot for rewriting and citations, Grammarly for final grammar and tone polish.

Which tool integrates with Google Docs?

Both integrate with Google Docs via browser extensions. Grammarly's integration is more seamless for real-time feedback.

Which has a better free plan?

Grammarly Free offers more comprehensive grammar and tone checks. Quillbot Free is limited in paraphrasing and lacks plagiarism check.

Does Quillbot detect AI-generated text?

Yes, Quillbot includes an AI detector to identify AI-written content, similar to Grammarly's AI detection.

Which is more affordable for individual use?

Grammarly Premium at $12/mo is cheaper than Quillbot Premium at $19.95/mo, but Quillbot offers more features like summarizer and citation generator.

More Grammarly or Quillbot comparisons

Explore each tool further

Browse these categories

Still deciding? Get the weekly AI tools brief

One email a week — new tools, honest comparisons, no spam.