AI writing assistants (ai writing) , by Grammarly, Inc. , since 2009
Grammarly
Grammar, tone, and full-sentence AI rewrites across browser, desktop, and Office/Docs
- WEB
- DESKTOP
- EXTENSION
- PLUGIN
- MOBILE
What Grammarly does
Real-time grammar, spelling, punctuation, and tone checker that runs as a browser extension, desktop app, and Word/Outlook/Google Docs plugin. Adds AI full-sentence rewrites, plagiarism/AI-text detection, and brand tone controls for teams on paid tiers.
What you get: Grammar/spelling/tone checker, AI full-sentence rewrites, Plagiarism & AI-text detection, Brand tone for teams.
Typical jobs: Everyday email and document proofreading; Team brand-tone consistency; Academic writing polish.
Worth knowing: Pricing page returned EUR-denominated figures (likely geo-based); USD list price is commonly cited as similar but was not directly confirmed via this fetch.
What users complain about: Documented complaints covering pricing, cancellation, and support issues, with users asking why Grammarly got so expensive in 2026 (SaaSFlags complaint tracker)
Pricing and plan limits
Verified August 2026| Plan | Monthly | Annual (per mo) | Limits |
|---|---|---|---|
| Free | Free | Free | 100 AI prompts/month, unlimited basic grammar/spelling/tone detection |
| Pro | $12 | n/a | 2,000 AI prompts/member/month, up to 2 user groups |
| Enterprise | not disclosed | n/a | Custom, unlimited AI prompts/member/month, unlimited user groups |
Where it wins
- Broadest platform coverage: browser extension, desktop app, Word/Outlook/Google Docs plugins, mobile keyboard
- Very mature product (since 2009) with strong brand recognition and support resources
- Free tier covers real grammar/spelling checking plus 100 AI prompts/month
Where it falls short
- Users report price increases and billing/cancellation friction
- No public developer API for third-party integrations
- Free plan capped at 100 AI prompts/month, with frequent upsell prompts toward Pro
How we scored it
Full methodology| Criterion | Weight | Score | Contribution |
|---|---|---|---|
| Capability | 30% | 8.0 | 2.40 |
| Value for money | 25% | 6.0 | 1.50 |
| Ease of use | 15% | 9.0 | 1.35 |
| Maturity | 15% | 10.0 | 1.50 |
| Support & docs | 10% | 8.0 | 0.80 |
| Momentum | 5% | 7.0 | 0.35 |
| Weighted total | 100% | 7.9 | 7.90 |
Alternatives to Grammarly
Chosen by editors, not sponsors
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