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Grammarly vs Jasper
Grammarly scores higher overall (8.6 vs 6.8), but the right pick depends on what you need.
Choose Grammarly if…
Anyone who wants polished, correct writing in every app without copying text into a separate tool
8.6/10★★★★★Full review →Side by side
| Grammarly | Jasper | |
|---|---|---|
| Overall score | 8.6/10 | 6.8/10 |
| Rank in category | #1 of 10 | #10 of 10 |
| Price | Freemium · from $12/month | Free trial · from $59/month |
| Free version | Basic spelling, grammar and tone checks plus 100 AI prompts a month | 7-day free trial of Pro |
| Platforms | Web, iOS, Android, Desktop app, Chrome extension, Microsoft Word, Google Docs | Web, Chrome extension, API |
| Made by | Superhuman (formerly Grammarly, Inc.) | Jasper AI, Inc. |
| Writing quality | 8.5 | 7.5 |
| Ease of use | 9 | 7.5 |
| Features | 8.5 | 7.5 |
| Value for money | 7.5 | 5 |
| Platforms | 10 | 5.5 |
Grammarly: what the AI does
- Real-time grammar, clarity and tone suggestions
- Full-sentence and paragraph rewrites
- Generative AI prompts for drafting and replies
- Plagiarism and AI-text detection
- Agents such as Citation Finder, AI Grader and Reader Reactions
- Superhuman Go assistant in the browser extension
- Works almost everywhere you type: browser, desktop, mobile keyboard, Word and Docs
- The most dependable grammar and clarity checks for English
- Free plan is genuinely useful
- Pro bundles plagiarism and AI-text detection
- Monthly billing ($30) is expensive compared with the annual price
- Its AI drafting is weaker than dedicated chatbots for long-form writing
- The extension reads everything you type, which raises privacy questions for some
Jasper: what the AI does
- Brand Voice and Jasper IQ
- Marketing agents (SEO, GEO, campaigns, translation)
- Canvas for on-brand content
- Image generation and editing
- Browser extension for Gmail, Docs and WordPress
- Strong brand-voice controls keep teams consistent
- Marketing-specific agents and workflows
- Team collaboration and governance
- Expensive for individuals compared with general AI tools
- Long-form output can be repetitive and needs editing
- Interface can feel cluttered for new users