Grammarly is an AI writing assistant that checks spelling, grammar and tone as you write in browsers, desktop apps, mobile keyboards and tools such as Google Docs, Word, Gmail, Outlook and Slack. Paid plans add full-sentence rewrites, tone adjustment, plagiarism and AI-text detection, a monthly allowance of generative AI prompts, and team features such as style guides and brand tones.
Grammarly runs alongside other software and suggests corrections and rewrites inline. The Free plan covers spelling, grammar, punctuation and tone detection with 100 generative AI prompts per month. Pro adds full-sentence rewrites, tone adjustment, fluency and inclusive-language suggestions, citation consistency, plagiarism and AI-text detection, 2,000 prompts per member per month, and team features (style guides, brand tones, snippets, knowledge sharing and analytics) for teams of up to 149 people. Enterprise adds unlimited prompts, SAML SSO, SCIM, managed mode, data loss prevention, audit logs API and BYOK encryption.
It suits individuals, students and knowledge workers who write in many applications and want consistent checks without switching tools, and teams that want shared tone and terminology guidance. Grammarly also offers a writing workspace (Grammarly docs), inline translation and multilingual support in 20+ languages.
Pro is priced per member at $12 per month when billed annually or $30 per month when billed monthly on the Pro page; a support article lists the same monthly and annual rates plus a quarterly option. The plans page shows Pro as a free trial with no payment due up front. Enterprise pricing is through sales, and a Grammarly Business tier is referenced in the FAQ without a published price.
Free plan available; paid plans from USD 12 per user per month, billed annually
Free
Limits: 100 generative AI prompts per month; spelling, grammar and tone detection; help center support only
Page shows $0 USD / month.
USD 12 per user per month, billed annually
Limits: 2,000 generative AI prompts per member per month; full-sentence rewrites; tone adjustment; plagiarism and AI-text detection; teams up to 149 people; 2 user groups; 1 style guide; 1 brand tone; priority support
Conditions: Billed annually; the plans page offers a free trial with $0 payment today
Page shows USD explicitly. The support article lists the annual charge as $144 USD per member per year ($12 average per month).
USD 30 per user per month
Limits: Same as Pro annual
Conditions: Monthly billing; a quarterly option at $60 USD per member per three months is listed in the support article
Page shows USD explicitly and states $30 when billed monthly; confirmed by the support article 'How much does Grammarly Pro cost'. A separate support article about the Superhuman suite lists different bundle pricing ($15 monthly for Superhuman Pro); that bundle is not recorded here.
Custom pricing - contact the vendor
Limits: Unlimited AI prompts per member; SAML SSO; SCIM; managed mode; custom roles; data loss prevention; audit logs API; BYOK encryption; unlimited user groups, style guides and brand tones; dedicated support
Conditions: Contact sales
No amount published.
Prices checked on October 24, 2026 from the vendor's official page. Vendors change prices; confirm before buying. How we check prices. Official pricing page (opens in a new tab)
Individuals, students and professionals who write across many apps and want grammar, tone and rewrite suggestions, and teams that want shared style guides and brand tones with central administration.
This page is based on desk research of the vendor's public pages and documentation. SIDAN Stack has not tested this product hands-on. How we research. Last verified: October 24, 2026.
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