AI paraphraser, grammar checker, summarizer and AI detector popular with students and writers.
Grammarly
AI Writing & CopywritingGrammarly is an AI writing assistant that checks grammar, spelling, clarity and tone as you type in browsers, desktop apps, Microsoft Office, Google Docs and mobile keyboards. It also generates and rewrites text, and paid plans add plagiarism and AI-content detection, style guides and brand tones. Its parent company rebranded as Superhuman in 2025, but Grammarly continues as the writing assistant product.
Pricing
Grammarly pricing
Free plan. Pro ~$12/mo billed annually or ~$30 monthly. Enterprise custom.
Last checked September 2026 · Confirm on grammarly.com
Features
What Grammarly does
- Real-time grammar, spelling, clarity and tone suggestions
- Full-sentence rewrites and generative AI prompts
- Plagiarism and AI-content detection (paid)
- Style guides and brand tones for teams
- Grammar checks in five languages beyond English, translation into 19
- Works in browsers, desktop apps, Office, Google Docs and mobile
Pros
- Works almost everywhere you type, including a mobile keyboard
- Clear, easy-to-accept suggestions with little setup
- Team features include style guides, snippets and analytics
- Has a useful free plan
Cons
- Rewrites, tone adjustment, plagiarism and AI detection require a paid plan
- Generative AI prompts are capped per month except on Enterprise
- Less depth for fiction and long manuscripts than specialist editors
- Full-sentence grammar support outside English covers only five languages
Fit
Who Grammarly is for
Look elsewhere if: Novelists wanting in-depth manuscript analysis, or marketers who need long-form content generated at scale, should look at specialist tools.
For teams & enterprise
Enterprise readiness
Grammarly Pro for teams and sales-led Enterprise; holds ISO 27001/27701/42001 and offers a BAA for HIPAA use cases.
- Business / enterprise plan
- Yes
- SSO (SAML / OIDC)
- Enterprise plan
- SCIM user provisioning
- —
- SOC 2
- Type II
- ISO 27001
- Yes
- HIPAA (BAA available)
- Enterprise (BAA)
- GDPR DPA
- Yes
- Data residency options
- —
- No training on your data
- —
- Audit logs
- —
- Admin controls
- Yes
- Deployment
- Cloud
From the vendor's own security documentation (trust center). "—" = not confirmed. Verify during your security review. Compare all tools.
| Writing feature checklist | |
|---|---|
| Grammar & style checking | Yes |
| Paraphrasing / rewriting | Paid plans only |
| Long-form drafting | Limited |
| Brand voice / style guide | Paid plans only |
| Plagiarism checker | Paid plans only |
| AI content detection | Paid plans only |
| Works in browser / other apps | Yes |
| Languages | English + 5 (translation 19) |
| Team workspace | Yes |
Grammarly compared
- Grammarly vs QuillBot
- Grammarly vs Writesonic
- Grammarly vs Jasper
- Grammarly vs Koala AI
- Grammarly vs Rytr
- Grammarly vs ProWritingAid
- Grammarly vs Copy.ai
- Grammarly vs Hypotenuse AI
- Grammarly vs Wordtune
Buying guides
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