Grammarly AI vs Wordtune: Complete Comparison 2026
Choosing between Grammarly AI and Wordtune? We compare both tools across features, pricing, pros and cons to help you decide which is the better fit in 2026.
Grammarly · Writing
Grammarly AI extends the popular writing assistant with generative features for drafting, rewriting and adjusting tone anywhere you type. Its GrammarlyGO and editor work across the web, documents and email with real-time grammar, clarity and style suggestions. Grammarly's strength is ubiquitous, context-aware writing help rather than long-form generation.
AI21 Labs · Writing
Wordtune, from AI21 Labs, focuses on rewriting and refining your own sentences rather than generating content from scratch. It offers rephrasing, tone shifts, shortening, expanding and summarisation in a lightweight browser extension. It suits writers who want to keep their voice while polishing clarity and flow.
Side-by-side comparison
| Feature | Grammarly AIGrammarly | WordtuneAI21 Labs |
|---|---|---|
| Quality score | 8.3 / 10 | 7.7 / 10 |
| Starting price | $12/mo | $9.99/mo |
| Free tier | Yes — Free tier available | Yes — Free tier available |
| API input price | — | — |
| API output price | — | — |
| Speed | Fast | Fast |
| Context window | — | — |
| Categories | Writing | Writing |
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Pricing comparison
The verdict
Overall, Grammarly AI edges ahead with a quality score of 8.3 versus 7.7 for Wordtune. Choose Grammarly AI if you want works everywhere you write. That said, Wordtune is the better pick when keeps your authentic voice matters most — so the right answer depends on your priorities and budget.