Grammarly is an AI writing assistant that checks and improves your writing as you type. It flags spelling, grammar and punctuation mistakes, suggests clearer and more concise phrasing, and shows how your tone comes across.
Its AI features can rewrite whole sentences, adjust tone, draft replies and ideas from a prompt, and check for plagiarism and AI-generated text. Grammarly works in browsers, on Windows and Mac, in Microsoft Office and Google Docs, and on your phone’s keyboard.
Key features
- Grammar and spelling checks in real time across apps.
- Clarity and conciseness rewrites including full-sentence rewrites on Pro.
- Tone detection and adjustment to sound more confident, friendly or formal.
- Generative AI prompts to draft, summarize and brainstorm.
- Plagiarism and AI-text detection on Pro.
- Citation consistency and inclusive language checks.
- Style guides and brand tones for teams.
Grammarly pricing
| Plan | Price | AI prompts | Highlights |
|---|---|---|---|
| Free | $0 | 100 per month | Spelling, grammar and tone detection |
| Pro | $12/month | 2,000 per member per month | Rewrites, tone adjustment, plagiarism and AI detection, team style guide |
| Enterprise | Contact sales | Unlimited | SSO, SCIM, data loss prevention, BYOK encryption, dedicated support |
Pro includes a free trial. Discounts are available for teams and educational institutions.
Our experience using Grammarly
Grammarly quietly saves time every day: it catches typos in emails, Slack messages and documents before they go out, and the clarity rewrites make long sentences easier to read. Tone detection is useful for sensitive emails.
For generating long content from scratch, a dedicated assistant like Claude or ChatGPT does more. For paraphrasing and summarizing, QuillBot is a cheaper specialist.
Who should use Grammarly?
Grammarly suits students, non-native English writers, professionals and customer-facing teams who want polished writing everywhere. Free is enough for basic checks; Pro is worth it if you write a lot or need plagiarism checks.
Grammarly vs alternatives
QuillBot is cheaper and stronger for paraphrasing. Writesonic and Jasper generate full marketing content. ChatGPT and Claude can also edit and rewrite on request.
See all AI for Writing and AI for Education tools.
Related guides
Frequently asked questions
Is Grammarly free?
Yes. Grammarly Free checks spelling and grammar, shows your tone, and includes 100 AI prompts per month.
How much is Grammarly Pro?
Grammarly Pro costs $12 per month and includes 2,000 AI prompts per member per month.
Does Grammarly detect AI writing?
Yes. Pro includes AI-text detection and plagiarism detection.
Where does Grammarly work?
In browsers, Windows and Mac apps, Microsoft Office, Google Docs and iOS and Android keyboards.
Is Grammarly good for students?
Yes. It helps with grammar, clarity and citations, and Pro adds plagiarism checks.
