Grammarly

AI writing assistant for proofreading, rewriting, tone and workplace communication

Research-based score

4.8

Tested

Features and capabilities4.8

Official Grammarly materials verify proofreading, rewriting, tone adjustment, multilingual support, generative AI, plagiarism and AI detection plus team brand and governance features.

Usability and implementation4.9

G2's large Grammarly review base strongly praises real-time writing improvement, ease of use and grammar correction while also documenting contextually incorrect or irrelevant suggestions.

Pricing and value transparency4.6

Free, Pro monthly, quarterly and annual rates are published, with a currently offered seven-day trial; Enterprise remains custom.

Integrations, security and trust4.9

Grammarly publishes SOC 2 Type II and multiple ISO certifications and works across desktop, browser, mobile, Office and major business web applications.

Scored by Surabhi Singh

Quick facts

Vendor: Grammarly, part of Superhuman
Pricing model: freemium
Plan pricing: Free plan; Grammarly Pro is USD 30/month or USD 12/member/month billed annually Vendor source checked; not a hands-on review
Free plan: Yes — check limits
Free trial: Yes — check eligibility
Last verified: Not yet verified

About Grammarly

Grammarly is an AI writing and communication assistant that provides spelling, grammar, clarity, tone, rewriting and generative-AI support across desktop, browser, mobile and workplace applications. Grammarly Pro adds advanced rewrites, brand and team features, plagiarism and AI detection and 2,000 monthly AI prompts, while Enterprise adds broader governance and security controls through the Superhuman product family.

Best for

Individuals and organizations that want real-time writing improvement, rewriting, tone and generative AI across the applications where they already communicate.

Grammarly pros and cons

Pros

G2 reviewers consistently praise Grammarly's real-time grammar, spelling and clarity feedback for improving everyday professional writing.
G2's review base also strongly favors ease of use because Grammarly works inside common applications instead of requiring constant copy-and-paste into a separate editor.
Pro combines rewriting, tone adjustment, brand tools, plagiarism and AI detection with 2,000 monthly generative-AI prompts.
Grammarly supports Windows, macOS, browser extensions, iPhone, iPad and Android and works across tools such as Word, Outlook, Gmail, Slack, Salesforce and Jira.
Grammarly publishes strong enterprise assurance including SOC 2 Type II, ISO 27001, 27017, 27018, 27701 and 42001, plus encryption and administrative controls.

Cons

−G2 reviewers frequently report incorrect, irrelevant or contextually inappropriate suggestions, so users still need editorial judgment.
−The Grammarly widget or inline interface can occasionally obstruct controls or behave inconsistently in certain web applications.
−Pro costs USD 30 per member on monthly billing, making annual billing substantially cheaper but requiring a larger upfront commitment.
−Refunds are generally issued only where required by law, which is less flexible than a broad money-back guarantee.
−Enterprise pricing is custom, and the broader Superhuman suite branding can make current product packaging more complex than Grammarly's older standalone structure.

Features

Grammar and Spelling Correction

Free and higher · Suggestions can occasionally be incorrect or inappropriate for specialized context.

AI Detector

Current supported Grammarly workflows · AI-detection results are probabilistic and should not be treated as definitive proof of authorship.

Style Guides and Brand Tones

Pro team capabilities and Enterprise · Team configuration and administrative access are required.

Tone Adjustment

Tone detection on Free; advanced adjustment on Pro and higher · Tone interpretation is probabilistic and context-dependent.

Full-Sentence Rewrites

Pro and higher · Users should review meaning and tone before accepting a rewrite.

Snippets

Team-oriented paid features · Availability and governance depend on account configuration.

Multilingual Writing Support

Current Grammarly experience with plan-dependent advanced features · Language coverage and feature parity can vary.

Plagiarism Detection

Pro and eligible higher plans · A similarity signal is not a final determination of plagiarism.

Generative AI

100 prompts/month on Free; 2,000 on Pro; Enterprise lists unlimited prompts · Prompt allowances and organizational policies apply.

Cross-App Writing Assistance

Free and higher with feature differences · Exact support varies by operating system, application and input field.

Platforms

Browser extensionsAndroidWindowsWebiOSiPadOSmacOS

Integrations

Gmail Salesforce Jira Microsoft Word Slack Google Docs Confluence Microsoft Outlook

Pricing

Free

USD 0.00/month with annual billing

Permanent free tier with essential writing assistance and limited generative AI. Limit: 100 AI prompts/month Limit: Advanced rewriting, team and premium features require paid access Billing unit: per user Minimum seats: 1

Spelling and grammar support
Tone detection
100 AI prompts/month

Pro Monthly

USD 30.00/month

Flexible monthly Grammarly Pro subscription for individuals or teams. Limit: Higher effective monthly cost than annual billing Limit: Up to 149 seats for Grammarly Pro Billing unit: per member/month Minimum seats: 1 Minimum commitment: Monthly

Everything in Free
Full-sentence rewrites
Tone adjustment
Brand tools
2,000 AI prompts/month
Plagiarism and AI detection

Pro Quarterly

See pricing details

Three-month Grammarly Pro billing option. Limit: USD 60 per member for three months Limit: Up to 149 seats Billing unit: per member/three months Minimum seats: 1 Minimum commitment: Quarterly

Same core Pro feature set
2,000 AI prompts/month

Pro Annual

USD 12.00per month, billed annually

Lowest published effective Grammarly Pro price when paid annually. Limit: USD 144 per member billed for the year Limit: Up to 149 seats Billing unit: per member/month equivalent Minimum seats: 1 Minimum commitment: Annual

Everything in Free
Full-sentence rewrites
Tone adjustment
Brand tools
2,000 AI prompts/month
Plagiarism and AI detection

Enterprise

See pricing details

Large-organization plan delivered through Grammarly's current Superhuman enterprise offering. Limit: Numerical pricing requires sales Billing unit: custom Contact sales for a quote.

Unlimited members
Dedicated support
Confidential mode
Granular roles
Data loss prevention
Unlimited generative AI prompts

Official pricing / availability source · Checked 23 September 2026. Confirm current taxes, regional terms and allowances. A listed plan is not necessarily the cheapest option.

Editorial verification: Not yet verified. Check the vendor's site for current pricing.

Read the full Grammarly pricing article

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Read the full Grammarly alternatives article

Grammarly — frequently asked questions

What is Grammarly used for?

Grammarly helps people improve spelling, grammar, clarity, fluency and tone while they write across supported applications. Paid users also get full-sentence rewrites, generative AI, plagiarism and AI-detection tools and team brand features. Because Grammarly operates across desktop, browsers and mobile, users can receive writing assistance inside email, documents, collaboration apps and CRM workflows.

How much does Grammarly cost?

Grammarly has a permanent Free plan. Pro costs USD 30 per member per month on monthly billing, USD 60 per member for three months on quarterly billing, or USD 144 per member per year, equivalent to USD 12 monthly. Grammarly Pro supports up to 149 seats. Enterprise pricing is custom and includes broader organizational security and governance.

Does Grammarly offer a free trial?

Yes, Grammarly is currently presenting a seven-day Pro free trial for eligible users and teams. Grammarly's support documentation confirms that a temporary verification transaction can appear on the payment method during the trial, so a payment method is required for this offer. Canceling the free trial ends it immediately and converts the account back to Free without the scheduled charge.

Where does Grammarly work?

Grammarly is available through a web editor, Windows and Mac apps, browser extensions and mobile experiences for iPhone, iPad and Android. It also works across supported applications and websites including Microsoft Word and Outlook, Gmail, Slack, Salesforce, Jira, Confluence, Google Docs and many other writing surfaces. Feature availability can vary by platform and field.

Is Grammarly secure for business use?

Grammarly publishes SOC 2 Type II and SOC 3 assurance plus ISO 27001, 27017, 27018, 27701 and 42001 certifications. It encrypts data in transit and at rest and provides enterprise controls such as SAML SSO and administrative security settings. Organizations should still review data-handling and AI policies for their own compliance requirements.

What do G2 reviewers say about Grammarly?

G2 rates Grammarly 4.7 out of 5, and the current Superhuman seller profile lists 14,073 Grammarly reviews. Users commonly praise real-time writing improvement, ease of use, grammar correction and accuracy. Frequent criticism includes incorrect or irrelevant suggestions and occasional interface obstruction. These are customer-review themes and do not represent hands-on SearchSagar testing.