Grammarly
AI writing assistant that checks grammar and spelling and suggests rewrites and tone changes.
Our verdict
What it does well
- Free plan covers spelling and grammar checks plus 100 AI prompts a month
- Works in Windows, Mac, mobile apps and Chrome, Safari, Firefox and Edge extensions
- Pro adds full-sentence rewrites, tone adjustment and plagiarism detection
Where it falls short
- Rewrites, tone adjustment and plagiarism checks need the paid Pro plan
- Pro is capped at 2,000 AI prompts per member per month
- Enterprise pricing is not published
Grammarly is an AI writing assistant. It proofreads text for spelling and grammar and offers tone adjustments and rewrite suggestions. It runs on Windows and Mac, on iPhone, iPad and Android, in Chrome, Safari, Firefox and Edge, and in Microsoft Office and Google Docs.
The Free plan includes spelling and grammar checking, tone visibility and 100 AI prompts per month. Pro adds full-sentence rewrites, tone adjustment, fluent English writing, inclusive language, citation consistency, AI-generated text and plagiarism detection, and 2,000 AI prompts per member per month.
Pro is listed at $12 per month in USD, with a free trial. Enterprise is custom-priced through sales and adds unlimited AI prompts, SSO, SCIM, audit logs and other admin controls. The plans page does not show annual pricing or say whether the price is per member.
Grammarly compared
Alternatives to Grammarly
Paraphrasing, grammar checking and summarizing tools for rewriting and polishing text.
- Freemium
What users say
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Last updated 16 October 2026. Facts checked against the official site on 16 October 2026. How we make money