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AI Writing

Grammarly

Grammarly is an AI writing assistant that checks grammar, clarity, tone, and style across any platform — from email to Google Docs. Compared on compliance credentials and breadth of writing assistance, it is the most enterprise-ready writing tool in the category.

8.1/ 10
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Verified August 2026

Starting price
£10/mo
Free tier
Yes
Best for
AI Writing
CompareMyAI score
8.1 / 10
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Grammarly is an AI writing assistant that checks grammar, clarity, tone, and style across any platform — from email to Google Docs. Compared on compliance credentials and breadth of writing assistance, it is the most enterprise-ready writing tool in the category.

Best used for

Blog posts, marketing copy, email campaigns, product descriptions, and long-form content.

Who it's for

  • Individuals looking for fast, capable AI assistance
  • Small businesses wanting to automate repetitive work
  • Teams that need a reliable AI they can trust
Free
Free
  • Basic grammar checks
  • Tone visibility
  • 100 AI prompts/month
Pro
£10/mo
  • Sentence rewrites
  • Tone adjustment
  • Plagiarism detection
  • AI text detection
  • 2,000 AI prompts/month
  • Team style guide
Enterprise
Contact us
  • Proactive AI
  • BYOK encryption
  • Data loss prevention
  • Custom roles & permissions
  • Dedicated support

Prices in GBP. Verified monthly. Always check the provider's site for the latest.

Free tier availableYes
API accessYes
Open sourceNo
Enterprise readyYes
GDPR compliantNo
SOC 2 certifiedYes
ISO 27001Yes
MFA supportedYes
Trains on your dataYes

Pros

  • +SOC 2 Type II and ISO 27001 certified — strongest compliance in the writing category
  • +Works across browser, desktop, Word, Google Docs, and email with one install
  • +Pro tier confirmed at £10/mo in GBP — transparent UK pricing
  • +Explicit opt-out from AI model training available in account settings

Cons

  • −Trains on user writing by default — opt-out required
  • −GDPR compliance not explicitly confirmed on accessed official pages
  • −Free AI prompt limit (100/mo) may feel restrictive for daily users

Compare Grammarly with…

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Quick facts
CategoryAI Writing
Free tierYes
Open sourceNo
EnterpriseYes
API accessYes
Security & compliance
SOC 2ISO 27001MFA

Ready to try Grammarly?

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Compare alternatives

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Jasper
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C
Copy Ai
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W
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Q
Quillbot
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—

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