Overview
Grammarly is an AI writing assistant that analyzes your text for grammar, spelling, punctuation, clarity, tone, and style, then suggests improvements in real time. It works across browsers, desktop apps, email, docs, and messaging tools, and now includes GrammarlyGO for generating, rewriting, and summarizing content from simple prompts.
Pricing
Free
- Free plan with basic spelling, grammar, and punctuation checks, plus limited GrammarlyGO AI prompts (around 100 prompts per month).
- Ideal for casual users who need essential error correction in emails, documents, and social posts.
Pro (Individual)
- Grammarly Pro (formerly Premium) costs about 30 USD per month month-to-month, or 12 USD per month on annual billing (144 USD/year).
- Adds advanced clarity and tone suggestions, full-sentence rewrites, plagiarism detection, and up to 2,000 GrammarlyGO prompts per month.
Business & Enterprise
- Business plan starts at around 15 USD per user per month (billed annually, 3+ seats) with style guides, brand tones, analytics, and admin controls.
- Enterprise plans for 150+ seats use custom pricing and add advanced security, SSO, centralized policy management, and unlimited AI prompts.
Key Features
- Real-time writing suggestions – Grammar, spelling, punctuation, conciseness, and clarity checks across 500,000+ sites and apps.
- Tone & style guidance – Detects tone (formal, confident, friendly, etc.) and suggests rewrites to match your audience and brand.
- GrammarlyGO generative AI – Built-in AI to brainstorm, outline, draft, rewrite, and summarize content using prompts.
- Plagiarism detection – Checks text against web sources and academic content to flag potential plagiarism (Pro and Business).
- Team & brand controls – Style guides, banned words, brand tones, and analytics for consistent team communication
Best Use Cases
- Emails & business communication – Write clear, professional emails, Slack messages, and reports with tone and clarity checks.
- Content & blogging – Draft blog posts, landing pages, and social copy with GrammarlyGO, then polish with Pro suggestions.
- Academic & professional writing – Improve essays, reports, and research with grammar checks, style improvements, and plagiarism detection.
- Team communication & branding – Keep company writing on-brand across sales, support, marketing, and internal docs.
- Non-native English writers – Help ESL users write more natural and fluent English in everyday and professional contexts.
Pros
- ✅ Mature, battle-tested assistant – Over a decade of development and 40M+ users; highly reliable for everyday writing.
- ✅ Works almost everywhere – Browser extensions, desktop apps, and integrations cover most common writing surfaces.
- ✅ Strong AI rewrite & tone tools – GrammarlyGO plus Pro features offer powerful rewrites, tone shifts, and clarity improvements.
- ✅ Good value for professionals – Pro’s annual pricing and Business features are compelling for heavy writers and teams.
Cons
- ❌ Monthly Pro is relatively expensive – Paying month-to-month at 30 USD can feel pricey versus annual or alternative tools.
- ❌ AI prompts are metered – GrammarlyGO prompt limits vary by plan, so heavy use can hit caps or require higher tiers.
- ❌ Not a full workflow agent – Great for writing, but does not orchestrate multi-app actions like dedicated automation agents.
Official Website
Grammarly – Official website: https://www.grammarly.com
Release Date: 2009
Last Updated: December 2025