Grammarly has evolved far beyond spell-checking. Its AI now rewrites sentences, adjusts your tone, detects plagiarism, and generates content from scratch. For non-native English speakers and professionals, it's practically a necessity.
The free plan is genuinely useful. Upgrade when you need the advanced AI features.
Get Grammarly Free →Grammarly started as a grammar and spell-checker but has transformed into a full AI writing assistant. With over 30 million daily active users, it's the most widely used writing tool on the internet — installed as a browser extension, desktop app, and mobile keyboard.
In 2026, Grammarly's AI features rival dedicated AI writing tools. It doesn't just catch mistakes — it rewrites, improves tone, adjusts formality, and now generates full drafts from prompts.
Still best-in-class. Grammarly catches errors that Microsoft Word misses — comma splices, misplaced modifiers, subject-verb disagreements in complex sentences. The free plan covers this comprehensively.
Grammarly analyzes the emotional tone of your writing and suggests adjustments. Write something that comes across as aggressive when you meant to be assertive? It flags it and offers alternatives. Surprisingly useful for professional emails.
Highlight any sentence or paragraph and ask Grammarly to rewrite it — more concisely, more formally, more confidently. The output is consistently better than the original. This alone saves significant editing time.
Premium users get access to plagiarism checking against billions of web pages. Essential for students, academics, and anyone publishing original content.
The newer AI generation feature lets you generate emails, documents, and content from prompts. Not as specialized as Jasper or Writesonic, but convenient for quick tasks without switching apps.
| Plan | Price | Best For |
|---|---|---|
| Free | $0 | Basic grammar and spell check |
| Premium | $30/month (or $12/month annual) | Writers, professionals, students |
| Business | $25/member/month | Teams and organizations |
The free plan handles grammar, spelling, and basic style suggestions. Premium unlocks tone adjustments, advanced clarity rewrites, full AI generation, plagiarism detection, and word choice improvements. For anyone writing professionally, the annual Premium plan at $12/month is a no-brainer.
Grammarly is the one writing tool we'd recommend to virtually everyone. It improves your writing whether you're using other AI tools or not — think of it as the final polish layer. The free plan is substantial, and Premium is worth it for frequent writers.
No credit card needed. Works instantly in your browser.
Get Grammarly Free →Affiliate disclosure: We may earn a commission if you sign up through our links. This doesn't affect our reviews.