What does Grammarly do?
Grammarly is a writing assistant that checks grammar, spelling and tone as you type in more than a million apps and websites. Its paid plan adds full-sentence rewrites, plagiarism and AI-text detection, and more AI prompts.
- Grammar and spelling. Catches typos, punctuation mistakes and commonly confused words as you write.
- Full-sentence rewrites. Suggests rewrites of whole sentences or paragraphs that you accept with a click (Pro).
- Tone adjustment. Shows how your writing sounds and suggests changes to make it more formal or friendly (adjustment on Pro).
- AI prompts. Drafts and outlines text from prompts, with a monthly limit per plan.
- Plagiarism checker. Compares text against web pages and academic papers and flags passages that need citations (Pro).
- Works everywhere you write. Runs in more than a million apps and websites, with support in 20+ languages.
Who is Grammarly for?
Grammarly is a good fit if you're a blogger, a website owner, a business owner or an affiliate marketer, and you need help polishing my writing.
How much does Grammarly cost?
Grammarly starts at $12/mo. It also has a free plan. Its pricing page lists a free trial. We checked this on Oct 10, 2026 on the official pricing page.
- Starts at
- $12/mo
- Free plan
- Yes
- Free trial
- 7 days (Pro)
Pro plan, billed annually ($144 a year). Pro billed monthly is $30/mo, per Grammarly's support center.
Grammarly plans compared
| Plan | Billed monthly | Billed yearly | What you get |
|---|---|---|---|
| Free | $0 | $0 | Grammar and spelling checks, tone detection, 100 AI prompts a month |
| Pro | $30/mo | $12/mo | Rewrites, tone adjustment, plagiarism and AI-text detection, 2,000 AI prompts a month, up to 149 seats |
| Enterprise | Custom | Custom | Contact sales; unlimited AI prompts, SSO, SCIM, data loss prevention |
Pro is also sold quarterly at $60 per member every 3 months. Grammarly says local prices in EUR, GBP and INR are shown at checkout.
Checked Oct 10, 2026 on Grammarly's pricing page. Prices change often, so confirm before you buy.
Grammarly pros and cons
What stands out
- Free plan with grammar checks and 100 AI prompts a month
- 7-day free trial of Pro, with a reminder 2 days before it ends
- Pro adds plagiarism and AI-text detection
Watch out for
- Pro costs $30 billed monthly; the $12 price means paying $144 for a year upfront
- Refunds only where required by law, per Grammarly's support center
- SSO and data loss prevention need the Enterprise plan, which has no public price
Based on Grammarly's own pages, not hands-on testing.
What are the alternatives to Grammarly?
We list 3 other AI Writing & Content tools: Jasper, QuillBot, Writesonic. Each one below shows its starting price and when you might pick it instead.
Compared in
Grammarly FAQ
Is Grammarly free?
Yes. The free plan includes grammar and spelling checks and 100 AI prompts a month. Rewrites, tone adjustment and plagiarism checks need Pro.
How much is Grammarly Pro per month?
$12 a month billed annually ($144 a year), $60 per quarter, or $30 billed monthly. There's a 7-day free trial.
Can I get a refund from Grammarly?
Grammarly says it gives refunds only where the law requires. You can cancel anytime and keep Pro until the end of the billing period.
Sources and how we checked
- Official pricing page, checked Oct 10, 2026
- Official website
- Grammarly support: Pro pricing and billing, checked Oct 10, 2026
- Grammarly support: refunds, checked Oct 10, 2026
- Grammarly support: cancel a subscription, checked Oct 10, 2026
- Grammarly features, checked Oct 10, 2026