A detailed comparison of features, pricing, ratings, and use cases to help you choose the right tool.
| Feature | ✅ Grammarly | ⚡ Writesonic |
|---|---|---|
| Free Plan | Yes — full grammar check | Yes — 10,000 words/mo |
| Starting Price | $12/month | $16/month |
| Works in Gmail/Docs/Word | Yes — everywhere | — |
| Plagiarism Checker | Yes (Premium+) | — |
| Tone Detection | Yes | — |
| Generative AI | Yes (Premium+) | — |
| Style Guides | Business plan only | — |
| Languages | English only | — |
| Browser Extension | Yes — Chrome, Firefox, Safari | — |
| Mobile App | Yes (iOS & Android) | — |
| Real-time Web Search | — | Yes |
| SEO Optimization | — | Built-in |
| Chatbot Builder | — | Yes (Botsonic) |
| Templates | — | 100+ |
| API Access | — | Business plan |
| Languages Supported | — | 25+ |
| AI Image Generation | — | Yes (Chatsonic) |
| Factual Citations | — | Yes |
Grammarly edges out Writesonic with a higher aggregate rating across all five dimensions. It's the stronger all-round choice — though Writesonic may still win on specific criteria like price or ease of use depending on your needs.