LanguageTool vs Writesonic
LanguageTool and Writesonic are both AI writing tools. LanguageTool is aimed at freelancers and creators, while Writesonic is aimed at small businesses and creators. LanguageTool costs less, from $24.90/mo versus $99/mo for Writesonic. Only LanguageTool has a free plan.
Multilingual grammar, spelling and style checker for 30+ languages
AI writing with SEO focus
| Pricing | Freemium · $25 | Paid · $99 |
| Starting price | $24.90/mo | $99/mo |
| Free plan | Yes | No |
| Free trial | 14 days | 7 days |
| Built for | Freelancers, Creators, Small businesses, Enterprise | Small businesses, Creators |
| Platforms | web, macos, windows, ios | web |
| Country | DE | US · 2020 |
| Rating | — | — |
Choose LanguageTool if
Writers and teams who work in several European languages and want one affordable checker across browser, Office and Google Docs.
- Covers far more languages than Grammarly, including German, French and Spanish
- Detects language automatically, so mixed-language writers need no switching
- Yearly Premium costs much less than most premium grammar tools
Look elsewhere if: English-only writers who want the deepest tone and generative features (Grammarly) or Turkish proofreading.
Choose Writesonic if
Content marketers combining SEO writing with AI visibility.
- SEO and GEO in one
- Fast article drafts
- AI visibility tracking
Look elsewhere if: Writers wanting full control.
LanguageTool vs Writesonic pricing
LanguageTool
- Basic$0Web editor only, 2,000 characters per text, core checks
- Premium$24.90/mo$69.90 billed yearly; 150,000 characters, browser extension
- TeamCustomPer-user price set by seat count (2 to 1,000) at checkout
Writesonic
- Starter$99/mo$79/mo billed annually; 1 user, 15 AI articles/mo
- Basic$249/mo$199/mo billed annually; 2 users, 25 articles/mo
- Growth$499/mo$399/mo billed annually; 3 users, Action Center
- EnterpriseCustomAll 9 AI platforms, SSO/SAML, strategy team
LanguageTool · Key features
- Grammar, spelling and punctuation checks in more than 30 languages
- Thousands of extra Premium rules for seven major European languages
- AI paraphrasing to rephrase sentences for clarity or tone
- Personal style guide plus a shared team dictionary and style guide
- Browser extensions for Chrome, Firefox, Edge and Safari
- Add-ins for Microsoft Word, Outlook and Google Docs
Cons
- Browser extension now requires Premium; free use is web-only
- English style suggestions are thinner than Grammarly's
- No Turkish support
Writesonic · Key features
- SEO-optimized article writer
- Content audit and optimization
- AI search visibility (GEO)
- Chatsonic assistant
- Brand voice
- WordPress publishing
Cons
- Credits limit volume
- Drafts need editing
- Pricing increased
LanguageTool vs Writesonic: FAQ
Which is cheaper, LanguageTool or Writesonic?
LanguageTool starts at $24.90/mo and Writesonic at $99/mo. Both prices are checked on the vendors' own pricing pages.
Do LanguageTool and Writesonic have a free plan?
LanguageTool has a free plan. Writesonic has no free plan, a 7-day free trial.