Grammarly vs Quillbot 2026: Grammar vs Paraphrasing
Grammarly excels at grammar checking and real-time correction across 500+ apps with 90M+ users, while Quillbot specializes in paraphrasing and rewriting with 8+ modes for stylistic variety. Grammarly is better for error detection; Quillbot is better for content transformation.
Grammarly
AI-powered writing assistant for grammar, tone, and plagiarism detection across 500+ platforms.
Professionals, students, and businesses needing comprehensive error detection and plagiarism checks across multiple platforms.
Quillbot
AI paraphrasing and rewriting tool with 8+ writing modes for diverse stylistic options.
Content creators, students, and writers focused on rewriting and rephrasing content who don't need comprehensive grammar checking.
Quick Answer
AI SummaryGrammarly excels at grammar checking and real-time correction across 500+ apps with 90M+ users, while Quillbot specializes in paraphrasing and rewriting with 8+ modes for stylistic variety. Grammarly is better for error detection; Quillbot is better for content transformation.
Our Verdict
AI-assistedChoose Grammarly if you need comprehensive grammar checking, plagiarism detection, and seamless integration across hundreds of apps for professional writing. Choose Quillbot if your primary goal is paraphrasing content, exploring writing styles, and rewriting passages with multiple mode options at a lower cost.
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Choose Grammarly if
Best pickProfessionals, students, and businesses needing comprehensive error detection and plagiarism checks across multiple platforms.
Choose Quillbot if
Content creators, students, and writers focused on rewriting and rephrasing content who don't need comprehensive grammar checking.
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Key Differences at a Glance
- Primary Strength:Grammar, spell-check, tone detection vs Paraphrasing, rewriting, synonym replacement
- Integration Points:✓ Grammarly wins(500+ apps and websites vs 150+ integrations (email, docs, browser))
- Paraphrasing Modes:✓ Quillbot wins(8+ modes (fluency, creative, professional, etc.) vs 2 modes (standard, creative))
Key Facts & Figures
42 numeric metrics compared
| Metric | Grammarly | Quillbot | Ratio |
|---|---|---|---|
| Annual Cost (Standard Plan)(USD) | $108 (with discount) | — | — |
| Daily Active Users(millions) | 40+ million | — | — |
| Writing Analytics Depth(score) | Basic metrics | — | — |
| Languages Supported(count) | Multiple with full AI | — | — |
| Real-Time Correction Speed(milliseconds) | Fast (<500ms) | — | — |
| Company Revenue (2026)(millions USD) | $700+ | — | — |
| Annual Premium Price (USD)($) | $144 | — | — |
| Grammar Rules Coverage(rules) | 150+ | — | — |
| Paraphrase Alternatives Per Sentence(options) | 2 | — | — |
| Tone Rewriting Options(tones) | 8 | — | — |
| Plagiarism Database Coverage(billion pages) | 16 | — | — |
| Supported Languages(count) | English (4 dialects) | — | — |
| Tone Detection Accuracy(percent) | 95% | — | — |
| Rewrite Variations Per Suggestion(count) | 50+ (with GrammarlyGO) | — | — |
| Monthly Subscription Cost(USD) | $12/month (annual) | — | — |
| Integrated App Support(number of apps) | 150+ apps (Gmail, Office, Slack, etc.) | — | — |
| Browser & Platform Integrations(platforms) | 500+ integrations | 50+ integrations | |
| Synonym Suggestions Per Word(options) | 3-4 options | 8-10+ options | |
| Free Plan Monthly Paraphrases(requests/month) | Unlimited (limited features) | 125 paraphrases | — |
| Tone Adjustment Modes(modes) | 8 modes | 6 modes | |
| Annual Premium Subscription Cost(USD) | $144/year | $99.90/year | |
| Monthly Subscription Cost (Premium/Pro Tier)(USD) | $12.00/month | — | — |
| Annual Subscription Cost (Premium/Pro Tier)(USD) | $144.00/year | — | — |
| Context Window (Max Input Length)(tokens) | Single document | — | — |
| Platform Integrations(count) | 500+ integrations | — | — |
| Grammar Detection Accuracy(percent) | 97% | — | — |
| Monthly Premium Cost(USD) | $11.67/month (annual billing) | — | — |
| Active Users Globally(millions) | 50+ million | — | — |
| Tone Options for Rewriting(count) | 2 tones (basic free; more in premium) | — | — |
| Integrated Platform Support(integrations) | 500+ (Google Docs, Gmail, Word, Slack, LinkedIn) | — | — |
| Grammar & Spelling Error Detection(error types) | 250+ grammar, spelling, punctuation rules | — | — |
| Free Trial Duration(days) | 30 days full premium access | — | — |
| Monthly Cost (Premium)(USD) | $12/month | — | — |
| Annual Cost (Premium)(USD) | $144/year | — | — |
| Grammar Rules Covered(rules) | 400+ rules | — | — |
| Platform Integration(platforms) | 500,000+ websites/apps | — | — |
| Tone/Style Detection(styles) | 100+ writing styles | — | — |
| User Rating (Capterra 2025)(stars) | 4.7/5 | — | — |
| Annual Subscription Cost (Premium)(USD) | $144/year | $120/year | |
| App Integrations(count) | 500+ integrations | 150+ integrations | |
| Paraphrasing Modes(modes) | 2 modes | 8+ modes | |
| App Store Rating(stars) | 4.7/5 (500K+ reviews) | 4.5/5 (150K+ reviews) |
Sourced from publicly available data ·
Key Differences
7 attributes compared head-to-head
- Grammar, spell-check, tone detectionPrimary StrengthParaphrasing, rewriting, synonym replacement
- 500+ apps and websites(winner)Integration Points150+ integrations (email, docs, browser)
- 2 modes (standard, creative)Paraphrasing Modes8+ modes (fluency, creative, professional, etc.)(winner)
- Basic grammar, spelling, punctuation(winner)Free Plan Grammar ChecksNo grammar checking on free plan
- Yes, included in Premium ($144/year)(winner)Plagiarism DetectionNo built-in plagiarism checker
- GrammarlyGO (requires separate subscription)AI Writing AssistanceBuilt into all premium plans(winner)
- 90M+ monthly users(winner)User Base20M+ monthly users
- Primary Strength
Grammarly
Grammar, spell-check, tone detection
Quillbot
Paraphrasing, rewriting, synonym replacement
- Integration Points
Grammarly
500+ apps and websites(winner)
Quillbot
150+ integrations (email, docs, browser)
- Paraphrasing Modes
Grammarly
2 modes (standard, creative)
Quillbot
8+ modes (fluency, creative, professional, etc.)(winner)
- Free Plan Grammar Checks
Grammarly
Basic grammar, spelling, punctuation(winner)
Quillbot
No grammar checking on free plan
- Plagiarism Detection
Grammarly
Yes, included in Premium ($144/year)(winner)
Quillbot
No built-in plagiarism checker
- AI Writing Assistance
Grammarly
GrammarlyGO (requires separate subscription)
Quillbot
Built into all premium plans(winner)
- User Base
Grammarly
90M+ monthly users(winner)
Quillbot
20M+ monthly users
Full Comparison
| Attribute | Grammarly | Quillbot |
|---|---|---|
| Annual Cost (Standard Plan)(USD) | $108 (with discount) | — |
| Annual Premium Price (USD)($) | $144 | — |
| Free Tier Access | Limited (basic checks only) | — |
| Monthly Subscription Cost(USD) | $12/month (annual) | — |
| Free Tier Capability | Basic grammar and spell check only | — |
Show 7 more attributesAnnual Premium Subscription Cost(USD) $144/year $99.90/year Monthly Subscription Cost (Premium/Pro Tier)(USD) $12.00/month — Annual Subscription Cost (Premium/Pro Tier)(USD) $144.00/year — Monthly Premium Cost(USD) $11.67/month (annual billing) — Monthly Cost (Premium)(USD) $12/month — Annual Cost (Premium)(USD) $144/year — Annual Subscription Cost (Premium)(USD) $144/year $120/year | ||
| Daily Active Users(millions) | 40+ million | — |
| Active Users Globally(millions) | 50+ million | — |
| Plagiarism Detection Quality | Advanced AI detector included | — |
| Writing Analytics Depth(score) | Basic metrics | — |
| Grammar Rules Coverage(rules) | 150+ | — |
| Paraphrase Alternatives Per Sentence(options) | 2 | — |
| Plagiarism Detection Available | Yes (Premium) | — |
Show 12 more attributesTone Rewriting Options(tones) 8 — Rewrite Variations Per Suggestion(count) 50+ (with GrammarlyGO) — Platform Integrations(count) 500+ integrations — Free Daily Rewrite Limit(rewrites/day) Unlimited suggestions — Tone Options for Rewriting(count) 2 tones (basic free; more in premium) — Grammar Rules Covered(rules) 400+ rules — Tone/Style Detection(styles) 100+ writing styles — App Integrations(count) 500+ integrations 150+ integrations Paraphrasing Modes(modes) 2 modes 8+ modes Plagiarism Detection(available) Yes (Premium only) No Free Plan Grammar Checks(available) Yes No AI Content Generation (Co-Author/GrammarlyGO)(included) Separate subscription ($30/month) Included in Premium ($120/year) | ||
| Languages Supported(count) | Multiple with full AI | — |
| Supported Languages(count) | English (4 dialects) | — |
| Free Tier Availability(boolean) | Yes (basic corrections only) | — |
| Real-Time Correction Speed(milliseconds) | Fast (<500ms) | — |
| Ideal for Manuscript Editing | Good for quick reviews | — |
| Company Revenue (2026)(millions USD) | $700+ | — |
| Daily Free Rewrites (Free Plan)(rewrites) | Unlimited (basic) | — |
| Plagiarism Database Coverage(billion pages) | 16 | — |
| Tone Detection Accuracy(percent) | 95% | — |
| Open Source | No (proprietary) | — |
| Integrated App Support(number of apps) | 150+ apps (Gmail, Office, Slack, etc.) | — |
| Real-time Browser Integration(boolean) | Yes (500+ apps) | — |
| Context Window Size(tokens) | Not applicable | — |
| Real-Time Integration | Yes—instant feedback while typing | — |
| Browser & Platform Integrations(platforms) | 500+ integrations(winner) | 50+ integrations |
| Synonym Suggestions Per Word(options) | 3-4 options | 8-10+ options(winner) |
| Free Plan Monthly Paraphrases(requests/month) | Unlimited (limited features) | 125 paraphrases |
| Tone Adjustment Modes(modes) | 8 modes(winner) | 6 modes |
| Context Window (Max Input Length)(tokens) | Single document | — |
| Content Generation Capability(max words per output) | Limited (rewrites only) | — |
| Grammar Detection Accuracy(percent) | 97% | — |
| Grammar & Spelling Error Detection(error types) | 250+ grammar, spelling, punctuation rules | — |
| Integrated Platform Support(integrations) | 500+ (Google Docs, Gmail, Word, Slack, LinkedIn) | — |
| Platform Integration(platforms) | 500,000+ websites/apps | — |
| Free Trial Duration(days) | 30 days full premium access | — |
| User Rating (Capterra 2025)(stars) | 4.7/5 | — |
| Learning Curve Complexity(1-5 scale) | 3/5 (moderate) | — |
| Monthly Active Users(millions) | 90M+ users(winner) | 20M+ users |
| App Store Rating(stars) | 4.7/5 (500K+ reviews)(winner) | 4.5/5 (150K+ reviews) |
Show 7 more attributes
Show 12 more attributes
Pros & Cons
10 pros·7 cons across both
Grammarly
Pros
- 500+ app integrations including Gmail, Slack, LinkedIn, Microsoft Word, Google Docs
- Advanced plagiarism detection (Premium tier) covering 16B+ web pages
- Tone detection analyzes emotional impact of writing with 100+ tone presets
- Real-time correction suggestions with explanations for every error
- 90M+ active users with 4.7/5 stars on most app stores
Cons
- Premium subscription at $144/year is more expensive than competitors
- GrammarlyGO AI writing requires separate subscription beyond Premium
- Heavy on resources; some users report browser slowdown on older devices
Quillbot
Pros
- 8+ paraphrasing modes (fluency, creative, professional, concise, formal, simple, expand, shorten) vs Grammarly's 2
- Co-author AI feature generates new content based on prompts across all plans
- Lower pricing: $120/year for Premium vs Grammarly's $144/year
- Chrome extension and browser integration for quick rewrites
- 20M+ active users with strong focus on students and content creators
Cons
- No built-in grammar or spell-check on free or paid plans
- Limited integrations (~150) compared to Grammarly's 500+
- No plagiarism detection feature available
- Paraphrasing quality varies; sometimes produces repetitive or awkward phrasings
Frequently Asked Questions
5 questions
Quillbot is better for students focused on paraphrasing essays and exploring writing styles due to its 8+ modes and lower cost ($120/year). However, Grammarly is superior if students need plagiarism detection and comprehensive error checking across all assignments. Many students use both tools together.
Resources & Learn More
Curated sources to dive deeper
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