Grammarly

What is Grammarly?

Grammarly is an AI-powered writing assistant that checks grammar, punctuation, style, and tone in real time. It runs inside web browsers, Google Docs, and Microsoft Word, catching errors and suggesting improvements as you type. Unlike add-on grammar checkers, Grammarly works natively across platforms without switching tools. It serves anyone who writes in English, from students polishing essays to professionals drafting client emails.

Key Features

• Real-Time Grammar and Spell Check: Flags grammatical errors and spelling mistakes as you type across all supported platforms
• Plagiarism Detection: Scans text against billions of web pages to flag potential plagiarism, available on Premium and above
• Tone and Style Suggestions: Recommends adjustments for clarity, formality, and audience fit so your writing matches the context
• Browser Extensions: Chrome and Firefox extensions bring grammar checking to any web application you use
• Google Docs Integration: Real-time suggestions appear directly inside Google Docs without leaving the editor
• Microsoft Word Add-In: Full grammar and style checking embedded in Word for desktop users
• Team Style Guides: Business and Enterprise plans let teams define custom style rules that apply across all members

Use Cases

• Students and educators: Draft essays, check grammar and style, and finalize submissions with fewer errors. Users report improved grades and clearer academic writing.
• Business professionals: Write emails, proofread reports, and collaborate on documents with consistent tone. Marketing managers and account executives use it to sharpen client-facing communication.
• Content creators and bloggers: Edit blog posts and web content for readability and SEO clarity. Users report stronger engagement metrics after running posts through Grammarly.
• Non-native English speakers: Get real-time feedback on grammar and phrasing while writing in English, with corrections that help build writing confidence over time.

Strengths and Weaknesses

Strengths:

• Users rate it 4.7 out of 5 on Trustpilot across 1,500+ reviews, frequently noting it catches mistakes they would have missed
• The interface is intuitive and requires no training, so new users can start writing immediately
• Works consistently across phone, laptop, and browser, with users reporting reliable cross-device performance
• Customer support responds quickly, especially through live chat and forums

Weaknesses:

• Limited to English only, which rules it out for multilingual writing workflows
• Some users report inconsistent performance across different platforms and integrations
• Advanced or creative writers may find the suggestions too conservative or formulaic
• Premium features like plagiarism detection require a paid plan starting at $12/month

Pricing

• Free: $0/month. Basic grammar and punctuation checks with limited feature access.
• Premium: $12/month billed annually. Advanced grammar, style suggestions, plagiarism detection, and unlimited usage. 7-day free trial available (credit card required).
• Business: $12.50/user/month billed annually. Team management, custom style guides, and priority support. 7-day free trial available (credit card required).
• Enterprise: Contact sales for custom pricing.

Discount programs available for students, nonprofits, and YC startups. A 14-day free trial is also available for new signups without a credit card.

FAQ

Is Grammarly free?

Yes. Grammarly offers a free plan with basic grammar and punctuation checking. Premium features like style suggestions and plagiarism detection require a paid subscription starting at $12/month.

How does Grammarly work?

Grammarly uses machine learning to analyze text and suggest corrections for grammar, spelling, tone, and clarity. It runs in real time inside browsers, Google Docs, and Microsoft Word.

Does Grammarly detect plagiarism?

Yes. Plagiarism detection is available on Premium, Business, and Enterprise plans. It scans your text against billions of web pages to flag potential matches.

How does Grammarly compare to ProWritingAid?

Grammarly is faster for quick grammar checks and has broader platform integration. ProWritingAid offers deeper writing analysis with detailed style reports. Choose Grammarly for everyday editing speed, ProWritingAid for in-depth manuscript review.

Does Grammarly work with Google Docs and Microsoft Word?

Yes. Grammarly integrates natively with both Google Docs and Microsoft Word, plus it offers browser extensions for Chrome and Firefox that work across web apps.

Is Grammarly safe to use for business writing?

Grammarly uses AES-256 encryption at rest and TLS 1.3 in transit. It supports SAML SSO, role-based access control, and multi-factor authentication. The vendor states it does not train models on customer data.