Tool profile
Grammarly AI
Grammarly is a writing assistant that checks grammar, spelling, punctuation, clarity, tone, and style in real time across browsers, apps, and desktop software. It has layered in generative AI features that can rewrite sentences, draft text from prompts, and give broader writing suggestions. It works as a browser extension, desktop app, and integrates with tools like Google Docs, Microsoft Word, and Outlook.
Models and pricing
Casual writers who need basic spell-check and grammar corrections
Catches spelling, basic grammar, and punctuation errors. No tone detection, no style suggestions, no generative AI features. Fine for quick emails or social posts, but you will hit the ceiling fast if you write anything substantial.
Individual professionals, students, and frequent writers who want full grammar, clarity, tone, and AI rewriting features
Adds clarity rewrites, tone adjustments, vocabulary suggestions, plagiarism detection, and access to Grammarly's generative AI drafting tools. This is where the product actually delivers on its promises. The annual price is reasonable; the monthly price is not.
Teams that need shared style guides, brand tone consistency, and centralized billing
Everything in Premium plus custom style guides, team analytics, admin controls, and the ability to set brand voice rules so everyone on the team writes consistently. Worth it for marketing or content teams; overkill for a solo freelancer.
Large organizations with security, compliance, and SSO requirements
Adds SAML SSO, advanced security controls, dedicated support, and custom onboarding. Pricing is not published. If your company has strict data governance needs, this is the only tier worth considering.
Which model should you use?
Most individual users should try Free first and upgrade to Premium only if they write more than a few documents a week — at $12/month annually it earns its keep for regular writers, but skip the monthly billing option entirely since it is more than double the cost. Teams producing external-facing content should look at Business for the brand consistency tools.
How we evaluate
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