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Grammarly

AI writing assistant.

What it is

Grammarly is the world's leading AI writing partner, helping over 30 million people write more clearly and effectively every day. Beyond just fixing typos, Grammarly uses advanced AI to analyze the tone, clarity, and engagement of your writing. Whether you're drafting an important email, a research paper, or a social media post, Grammarly acts as a real-time coach, suggesting ways to make your message more impactful. Its browser extension and desktop apps ensure you look professional across every site you visit.

Key features

  • Real-time Grammar

    Automatically fix spelling, punctuation, and grammar errors as you type.

  • Tone Detector

    Ensure your message is hitting the right emotional note for your audience.

  • Clarity Suggestions

    AI-powered advice to make long, complex sentences easier to read.

  • GrammarlyGO

    Generative AI that helps you draft, rewrite, and brainstorm ideas in seconds.

Strengths and trade-offs

What works well

  • Ubiquitous: Works everywhere you write—Gmail, LinkedIn, Word, and more.
  • Tone Analysis: Tells you how you 'sound' (confident, friendly, etc.) before you send.
  • Plagiarism Checker: Scans billions of web pages to ensure your work is original.
  • Ease of Use: The most user-friendly and 'invisible' writing tool in the market.

Where it falls short

  • Privacy: Requires access to almost everything you type to be effective.
  • Premium Price: The full suite of features is quite expensive for individuals.
  • Over-correction: Can occasionally suggest changes that lose your unique personal voice.

Who it is for

Students, Professionals, and Non-native English Speakers.

Pick it or skip it

Pick Grammarly if

  • Everyday writing where spelling, grammar and tone checks are enough — that is the free plan
  • Writers who want full-sentence rewrites and plagiarism detection, which are Pro
  • People who write in English as a second language

Skip it if

  • You lean on AI generation — free includes 100 prompts, Pro 2,000
  • You need plagiarism or AI-text detection; both are Pro at $12/month
  • You are buying for a team: Grammarly does not publish a per-seat business price, only Contact Sales

Our verdict

The essential tool for anyone who wants to write with confidence and professionalism.

Closest alternatives we track

Same category, ordered by verified starting price.

Frequently asked questions

Does Grammarly have a free plan?
Yes. Grammarly offers a free tier with limits; paid plans unlock higher usage or team features.
Who is Grammarly best for?
Students, Professionals, and Non-native English Speakers.
What are the closest alternatives to Grammarly?
In the same category we track Copy.ai, Jasper and Writesonic. Each has its own review page with verified pricing, and the comparison links above show them side by side.
What are the main drawbacks of Grammarly?
The trade-offs we noted: Privacy: Requires access to almost everything you type to be effective.; Premium Price: The full suite of features is quite expensive for individuals.; Over-correction: Can occasionally suggest changes that lose your unique personal voice..
When should you not use Grammarly?
Skip Grammarly if: You lean on AI generation — free includes 100 prompts, Pro 2,000; You need plagiarism or AI-text detection; both are Pro at $12/month; You are buying for a team: Grammarly does not publish a per-seat business price, only Contact Sales.

What we checked

  • Public APIOffers a documented API you can build against.Yes
  • Mobile appHas a native app for iOS or Android, not just a mobile website.Yes
  • Open source / self-hostableSource is open and the tool can be run on your own infrastructure.No
  • SSO (SAML)Supports SAML single sign-on on at least one plan.Yes

“Not checked” means exactly that — we have not verified it, and we do not guess.

Evidence and freshness

Status: Vendor pricing page verifiedReviewed: 2026-09-07

  • Grammarly — Plans

    Checked 2026-09-07 · Supports: Free $0/month with spelling, grammar, tone and 100 AI prompts, Pro $12/month adds rewrites, tone adjustment, plagiarism and AI detection, and 2,000 AI prompts, Enterprise is quoted by sales; no per-seat business price published

Limit: Vendor pricing page was reviewed; this record is not a ToolCompare benchmark.

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