AI writing assistant that checks grammar, tone, and clarity across the web, with generative drafting and rewriting built in.
Grammarly is the most widely used AI writing assistant, and its defining advantage is ubiquity: it works almost everywhere you type — browser, desktop apps, email, docs — checking grammar, spelling, tone, and clarity in real time. In 2026 it has grown from a corrector into a generative writing tool, with AI drafting, full-sentence rewrites, and tone adjustment now standard across every tier, including Free.
The plan structure simplified in 2026 to Free, Pro, and Enterprise. Free covers the fundamentals — real-time grammar, spelling, punctuation, conciseness — plus 100 AI prompts per month, so you can use generative features without paying. Pro ($12/user/mo billed annually, $30 monthly) raises that to 2,000 AI prompts and adds plagiarism detection, full rewrites, and team features like style guides and brand tones, covering 1–149 seats. Enterprise (custom) adds unlimited AI, security controls, and governance for 150+ users.
Its strength is being everywhere, frictionlessly. Because Grammarly runs as a browser extension and system-wide assistant, it improves your writing in the tools you already use without you having to go to a separate app. For professionals who write constantly across email, documents, and the web, that ambient, always-on correction is genuinely valuable and hard to replicate.
The honest weaknesses: its suggestions can be over-eager, pushing changes that flatten voice or miss context, and its generative writing is competent but not as strong as a frontier model like ChatGPT for substantial drafting. The free AI prompt cap (100/mo) is easy to exhaust, and privacy-conscious users are uneasy about a tool that reads everything they type. For heavy generative work, a dedicated assistant is better; Grammarly's edge is correction-in-place, not creation.
Who it is for: professionals, students, and teams who write across many apps and want always-on grammar, clarity, and tone help. Who it is not for: users who mainly want long-form generative drafting (a general assistant is stronger), or anyone uncomfortable with a tool monitoring everything they type.
Grammarly's core value: real-time grammar, spelling, clarity, and tone checks everywhere you type — email, docs, browser, chat. Because it is ambient and system-wide, it improves writing without requiring you to switch to a dedicated app.
Professionals use Grammarly's tone detection and rewrite suggestions to make sure an email or message lands the way they intend — more formal, more confident, more friendly. It catches tone problems that grammar checks miss.
On Pro and Enterprise, teams configure style guides and brand tones so everyone's writing stays consistent with company voice. Combined with plagiarism detection, it becomes a writing-governance layer for organizations.
Grammarly simplified to three tiers in 2026: Free ($0, real-time grammar/spelling/clarity plus 100 AI prompts per month), Pro ($12/user/mo billed annually, or $30/mo monthly — 2,000 AI prompts, plagiarism detection, full-sentence rewrites, and team style guides, supporting 1–149 seats), and Enterprise (custom, with unlimited AI, security controls, and governance for 150+ users). AI features are now standard on every tier; the real difference is the prompt allowance — 100/mo Free, 2,000/mo Pro, unlimited Enterprise. The trap: the free 100-prompt cap is easy to hit if you lean on generative rewrites, and monthly Pro billing ($30) is more than double the annual rate ($12).
Yes. As of 2026 generative AI is standard on every tier, including Free, which gets 100 AI prompts per month alongside unlimited real-time grammar, spelling, and clarity checks. Pro raises the allowance to 2,000 prompts and Enterprise to unlimited.
If you use generative rewrites heavily or need plagiarism detection, full-sentence rewrites, and team style guides, yes — the jump from 100 to 2,000 monthly AI prompts is the main reason. If you mostly want basic grammar and spelling correction, the free tier is genuinely sufficient.
Not really — they do different jobs. Grammarly excels at correcting and polishing what you write, everywhere you write it. ChatGPT is stronger for generating substantial drafts from scratch. Many writers use Grammarly for ambient correction and a general assistant for heavy drafting.
Pro is $12 per user per month when billed annually, but $30 per month if you pay month-to-month — so the annual commitment is more than half off. It supports 1 to 149 seats and now covers everything the old Business plan handled.
It is a reasonable consideration. Grammarly works by reading what you type across apps and the web, which some privacy-conscious users and organizations are uncomfortable with. Grammarly offers security controls on Enterprise, but if you handle highly sensitive text, review its data handling before deploying it widely.
Full review coming soon.