Grammarly
An AI-powered writing assistant that offers real-time grammar, tone, style, plagiarism detection, and generative AI prompts across web, desktop, and mobile. It
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Grammarly works well for writers who want consistent grammar, tone, and plagiarism checks across apps, and its free tier is genuinely useful. The Pro plan adds AI rewrites and plagiarism detection but costs jump steeply if billed monthly. Teams needing brand voice control may need the Business or Enterprise tiers.
What is Grammarly?
Grammarly is an AI writing assistant that integrates into browsers, desktop apps, mobile keyboards, and Microsoft Office to catch grammar, spelling, tone, and clarity issues in real time. It layers in generative AI features - like full‑sentence rewrites, tone adjustment, plagiarism detection, and AI prompts - depending on your plan.
The Free tier gives you basic corrections, tone detection, and 100 AI prompts per month, while Pro enables advanced rewriting, plagiarism checks, and 2,000 AI prompts per member per month. Enterprise adds team controls, SSO, analytics, and unlimited AI prompts.
How we scored Grammarly
Grammarly scores well for capability with real‑time corrections, tone tools, plagiarism detection, and AI prompts. Ease of use is strong given its cross‑platform integration. Value is dragged down by the steep monthly price jump from $12 to $30. Delivery is solid - features match claims and there’s no major trust issue, though lack of offline use is a limitation.
Pros and cons
What we liked
- Free tier includes tone detection and 100 AI prompts per month.
- Pro plan adds plagiarism detection, full‑sentence rewrites, and 2,000 AI prompts per member per month.
- Enterprise tier supports SSO, admin roles, analytics, and unlimited AI prompts.
Where it falls short
- Monthly billing for Pro jumps to $30/month - more than double the annual rate.
- Free tier lacks plagiarism detection and full‑sentence rewrites, gating key features behind Pro.
- No offline functionality - Grammarly works only in the cloud, unlike some competitors.
Key features
Grammarly pricing
| Plan | Price | Who it is for |
|---|---|---|
| Free | $0/month | Basic grammar, spelling, tone detection, 100 AI prompts per month. |
| Pro | $12/member/month (billed annually) or $30/member/month (billed monthly) | Everything in Free plus full‑sentence rewrites, tone adjustment, plagiarism detection, 2,000 AI prompts per member per month. |
| Enterprise | Custom (contact sales) | Everything in Pro plus unlimited AI prompts, SSO, SCIM, admin roles, analytics, data protection features. |
Pricing reflects what we saw at time of review (2026-07). Always confirm current pricing on the tool's own site.
Who should use Grammarly?
If you write emails, reports, or social posts and want consistent grammar and tone help across platforms, Grammarly’s Free tier is a solid starting point. Professional writers, bloggers, or students who need plagiarism detection, style rewrites, or AI‑assisted phrasing will find the Pro plan (at $12/month annual) worthwhile. Teams that must enforce brand voice, manage users, or integrate with SSO should look at Business or Enterprise. If your main need is long‑form AI drafting, tools like Jasper or Writesonic may serve you better.
Frequently asked questions
What’s included in the Free plan?+
The Free plan includes grammar and spelling corrections, tone detection, and 100 AI prompts per month.
How much does Pro cost?+
Pro costs $12 per member per month when billed annually (about $144/year) or $30 per member per month if billed monthly.
What does Enterprise add?+
Enterprise adds unlimited AI prompts, SSO, SCIM, admin roles, analytics dashboards, and data protection features.
Does Grammarly work offline?+
No - Grammarly operates in the cloud and requires internet access; it does not offer offline functionality.
Can Grammarly detect plagiarism?+
Yes - plagiarism detection is included in the Pro and Enterprise plans, not in Free.
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