AI assistants most often recommend Grammarly for grammar checkers in 🇧🇷 Brazil (Português), naming it in 100% of the buyer questions we tested, followed by Reverso Spell Checker and Gingko. We asked an AI model the questions buyers ask about grammar checkers and tallied which brands it named most — "share of voice" in AI answers, who AI recommends when no human is watching.
| # | Brand | AI share of voice |
|---|---|---|
| 1 | Grammarly | 6/6 (100%) |
| 2 | Reverso Spell Checker | 6/6 (100%) |
| 3 | Gingko | 4/6 (67%) |
| 4 | LanguageTool | 3/6 (50%) |
| 5 | Ginger | 2/6 (33%) |
| 6 | Microsoft Word | 1/6 (17%) |
Method: 6 representative buyer questions via a large language model, 🇧🇷 Brazil (Português). Updated 7/4/2026. A proxy for how AI assistants describe this category.
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