Grammarly
FreemiumAI writing assistant that checks grammar, tone, clarity, and style across 500,000+ apps and websites.
What is Grammarly?
Grammarly checks grammar, spelling, punctuation, clarity, tone and style in real time across virtually every app where you write, including Gmail, Google Docs, Slack and LinkedIn, via browser extension, desktop app and mobile keyboard. Its free tier is unusually capable for the category, covering the core corrections plus around 100 generative AI prompts a month with no card required, which is enough that many users never upgrade. One naming change causes confusion: in October 2025 the parent company renamed itself Superhuman, but the writing product is still called Grammarly and its pricing did not change. Pro is $12 per member per month billed annually, $20 quarterly or $30 month to month, so paying monthly costs 2.5 times the annual rate. Above that, a Business tier around $33 bundles Superhuman Mail and Docs. Plagiarism detection and unlimited rewrites require a paid plan.
Key Features
How to Use Grammarly
✅ Best For
- Business professionals sending daily client emails and reports who need tone and clarity checked in real time without interrupting their workflow
- Content creators and bloggers who want plagiarism detection and AI-assisted rewrites to polish their drafts before publishing
- Enterprise teams that need consistent brand voice and writing standards enforced across all team communications via shared style guides
❌ Not For
- Creative fiction writers seeking deep narrative suggestions or character development feedback, as Grammarly is optimized for professional and functional writing rather than storytelling
- Users looking for a citation generator or academic paper formatter, as Grammarly does not offer built-in citation tools
- Budget-conscious users who need unlimited AI writing generation, as the free plan caps AI prompts at 100 per month
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Pricing
- ✓Basic grammar
- ✓spelling
- ✓tone detection
- ✓100 AI prompts/mo
- ✓Full rewrites
- ✓plagiarism check
- ✓2000 AI prompts
- ✓billed annually
- ✓Style guides
- ✓analytics
- ✓admin controls
Prompts to Try
Rewrite this email to sound more professional
Check this blog post for grammar and clarity issues
Detect the tone of this customer response
Generate a 3-sentence summary of this paragraph
Suggest synonyms for overused words in this report