AI assistants most often recommend Grammarly for AI writing tools in 🇺🇸 United States (English), naming it in 100% of the buyer questions we tested, followed by Jasper and ProWritingAid. We asked an AI model the questions buyers ask about AI writing tools 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 | Jasper | 6/6 (100%) |
| 3 | ProWritingAid | 3/6 (50%) |
| 4 | Hemingway Editor | 2/6 (33%) |
| 5 | WordLift | 2/6 (33%) |
| 6 | HubSpot | 1/6 (17%) |
| 7 | Sudowrite | 1/6 (17%) |
| 8 | Microsoft | 1/6 (17%) |
Method: 6 representative buyer questions via a large language model, 🇺🇸 United States (English). Updated 6/9/2026. A proxy for how AI assistants describe this category.
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