Grammarly vs Quillbot

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

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At a glance

Dimension	Grammarly	Quillbot
Best for	Business professionals, students, and non-native English speakers needing real-time grammar, tone, and clarity checks across 500K+ apps.	Students, ESL writers, and content creators who primarily need paraphrasing, summarizing, and text rewriting in multiple modes.
Pricing	Free tier with basic grammar/spelling/tone; Premium $12/mo for rewrites & plagiarism; Business $15/user/mo for brand tones & analytics.	Free tier with 125-word paraphrase & grammar check; Premium $10/mo for unlimited words, all modes, and plagiarism check.
Setup complexity	Simple: browser extension, desktop app, or mobile keyboard. Works instantly in most text fields. No account required for basic checks.	Easy: browser extension, Word add-in, or web app. Free account needed for saved history. Paraphrase mode selection adds slight complexity.
Strongest differentiator	Real-time tone detection and adjustment, with deep integrations across 500K+ apps – unmatched for polished business communication.	Seven distinct paraphrasing modes (standard, fluency, formal, creative, etc.) plus AI humanizer – ideal for rewriting and avoiding plagiarism.
Platform availability	Browser extensions (Chrome, Safari, Firefox, Edge), desktop apps (Windows, Mac), mobile keyboard (iOS, Android), web editor.	Browser extension (Chrome), Word add-in, web editor, macOS app, iOS/Android apps, Google Docs add-on.
Generative AI features	GrammarlyGO: AI writing assistant for composing, rewriting, and generating text within the editor. Also offers AI proofreader and reader reactions agents.	AI Chat for brainstorming/writing, image generator from text, cover letter generator, social media post writer, and AI humanizer for text.

Grammarly vs QuillBot: Grammarly wins for everyday professional writing and real-time grammar/tone correction due to its pervasive integrations and polished correction engine. QuillBot wins for academic paraphrasing and diverse rewriting needs – its seven paraphrasing modes and summarizer are unmatched. The deciding factor is your primary use case: if you need to write error-free emails and documents across many platforms, choose Grammarly; if you need to rephrase, summarize, or translate text creatively, choose QuillBot.

Grammarly

AI writing assistant for grammar, clarity, and tone

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Quillbot

AI-powered paraphrasing and writing assistant for clear, polished text.

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Pricing

Freemium

Plans

$12/mo

$15/user/mo

$10/mo

Rating

—

Popularity

0 views

Skill Level

Beginner-friendly

API Available

Platforms

WebMobileDesktopPlugin

Web

Feature-by-feature

Core capabilities: Grammarly vs QuillBot

Grammarly excels at real-time grammar, spelling, punctuation, and tone detection across virtually any text field via its browser extensions and desktop apps. It provides clarity and conciseness suggestions, full-sentence rewrites, and plagiarism checking (Premium). QuillBot focuses on paraphrasing with seven distinct modes (Standard, Fluency, Formal, Simple, Creative, Expand, Shorten) plus a grammar checker, summarizer, translator, and plagiarism checker (Premium). Grammarly’s strength is comprehensive proofreading and tone guidance; QuillBot’s strength is flexible rephrasing.

AI/model approach: Grammarly versus QuillBot

Grammarly uses a proprietary AI trained on extensive linguistic data to correct grammar, improve clarity, and detect tone. It now includes GrammarlyGO for generative writing and an AI proofreader agent. QuillBot also uses machine learning for paraphrasing and grammar checking, but its core differentiator is the variety of paraphrasing modes that allow users to adjust output style – from formal to creative. QuillBot also offers an AI humanizer to make AI-generated text sound more natural, and an AI Chat for interactive brainstorming. Both tools have AI content detection, but QuillBot’s humanizer is unique as of 2026.

Integrations & ecosystem: Grammarly vs QuillBot

Grammarly integrates with over 500,000 apps and websites, including Chrome, Safari, Firefox, Microsoft Office, Google Docs, Slack, Gmail, Zendesk, Superhuman, and Edge. This ubiquity makes it seamless for professionals working across multiple platforms. QuillBot integrates via a Chrome extension, Microsoft Word add-in, Google Docs add-on, macOS app, and mobile apps. While QuillBot’s integration scope is narrower, it covers the most common productivity tools. For ecosystem breadth, Grammarly wins.

Performance & scale: Grammarly compared to QuillBot

Grammarly is designed to handle high-volume use – it’s trusted by 50,000 organizations and 40 million individuals, with real-time checking in large documents. Its Enterprise plan offers SSO, brand tones, and analytics for team-scale deployment. QuillBot’s free tier limits paraphrasing to 125 words, but Premium removes limits and unlocks unlimited usage. QuillBot’s summarizer can handle long articles, but its scalability for large teams is less proven. Grammarly’s enterprise readiness gives it an edge for organizational use.

Developer experience and workflow

Neither tool offers a public API or SDK in the provided data. Grammarly provides a web editor, browser extensions, and desktop app with minimal setup. QuillBot offers a web app, Chrome extension, Word add-in, and mobile apps. Both are straightforward to install, but QuillBot’s selection of paraphrase modes adds a learning step. Grammarly’s tone detection and style guide enforcement (Business) make it stronger for maintaining consistent brand voice in team settings.

Pricing compared

Grammarly pricing (2026)

Grammarly offers a freemium model with three tiers:

Free ($0): Includes basic grammar, spelling, and tone detection. Suitable for light use.
Premium ($12/month): Adds full-sentence rewrites, tone adjustment, plagiarism detection, and more advanced suggestions. Best for individuals.
Business ($15/user/month): Includes brand tones, analytics, style guide enforcement, and SSO. Designed for teams. All plans are billed monthly or annually. There is no mention of overage fees or contracts. Enterprise pricing is custom.

QuillBot pricing (2026)

QuillBot also uses a freemium model with two tiers:

Free ($0): 125-word paraphrase limit, grammar check, summarizer up to 1200 words, and limited modes.
Premium ($10/month): Unlimited paraphrase words, all 7 modes, plagiarism checker, summarizer up to 6000 words, and other advanced features. QuillBot Premium is cheaper than Grammarly Premium ($10 vs $12/month). QuillBot offers no explicit business/team plan, though teams can use Premium individually.

Value-per-dollar: Grammarly vs QuillBot

For individual users who need deep grammar and tone correction, Grammarly Premium ($12/mo) provides significant value, especially if they frequently write emails, documents, and messages across many platforms. For students or ESL writers focused on paraphrasing and avoiding plagiarism, QuillBot Premium ($10/mo) offers more relevant features at a lower price. For teams and organizations, Grammarly Business ($15/user/mo) is a clear winner due to its brand tone enforcement, analytics, and SSO – QuillBot lacks equivalent team capabilities. As of 2026, pricing remains competitive with no major changes.

Who should pick which

Professional writer sending dozens of emails daily
Pick: Grammarly
Grammarly's real-time grammar and tone detection across 500K+ integrations ensures polished emails with minimal effort.
ESL student writing an academic paper
Pick: Quillbot
QuillBot's 7 paraphrasing modes (especially Fluency and Formal) help rephrase sentences naturally, while the summarizer condenses sources.
Marketing team needing consistent brand voice
Pick: Grammarly
Grammarly Business provides custom brand tones, style guide enforcement, and analytics to maintain consistency across team output.
Content creator generating social media posts
Pick: Quillbot
QuillBot's AI Chat and social media post writer quickly generate varied post drafts, and the AI humanizer refines AI text for natural tone.
Non-native English speaker writing professional emails
Pick: Grammarly
Grammarly's thorough grammar and clarity suggestions help non-native speakers write confidently, with tone detection to adjust formality.

Frequently Asked Questions

Is QuillBot or Grammarly better for paraphrasing?

QuillBot is better for paraphrasing. It offers seven paraphrasing modes (e.g., Standard, Fluency, Creative, Expand) that let you control the output style, while Grammarly focuses more on grammar and tone correction than rephrasing.

Can I use Grammarly and QuillBot together?

Yes. Many users combine both: Grammarly for real-time grammar and tone checks, and QuillBot for heavy paraphrasing or summarization. They work side by side in the same browser without conflict.

Which tool has a free tier?

Both have free tiers. Grammarly Free includes basic grammar, spelling, and tone detection. QuillBot Free includes a 125-word paraphrase limit and grammar check. For full features, you need the respective premium plans.

Does Grammarly or QuillBot integrate with Google Docs?

Grammarly integrates with Google Docs via its browser extension, providing real-time suggestions. QuillBot also offers a Google Docs add-on, but Grammarly's integration is more seamless and feature-rich.

Which tool is better for academic writing?

QuillBot is generally better for academic writing due to its paraphrasing modes, summarizer, and citation generator (APA, MLA, Chicago). Grammarly is better for grammar and style, but QuillBot's rephrasing tools are more relevant for avoiding plagiarism and paraphrasing sources.

Does QuillBot have a plagiarism checker?

Yes, QuillBot's Premium plan includes a plagiarism checker. Grammarly Premium also includes plagiarism detection. Both are similar in quality.

Which tool is more affordable?

QuillBot Premium costs $10/month, while Grammarly Premium costs $12/month. QuillBot is slightly cheaper, but Grammarly offers a Business plan for teams that QuillBot lacks.

Can QuillBot detect AI-generated text?

Yes, QuillBot has an AI content detector. It also offers an AI humanizer that rewrites AI-generated text to sound more natural. Grammarly also has AI text detection.

Is Grammarly or QuillBot better for enterprise teams?

Grammarly is better for enterprise teams with its Business plan that includes brand tones, analytics, style guide enforcement, and SSO. QuillBot does not have a dedicated team plan.

Can I use both tools offline?

Grammarly offers a desktop app that works offline for basic checks. QuillBot is primarily web-based; some features may work offline via the browser extension, but full functionality requires internet.

Last reviewed: May 12, 2026