AI assistants most often recommend Slack for team chat apps in 🇯🇵 Japan (日本語), naming it in 100% of the buyer questions we tested, followed by Microsoft Teams and Notion. We asked an AI model the questions buyers ask about team chat apps 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 | Slack | 6/6 (100%) |
| 2 | Microsoft Teams | 6/6 (100%) |
| 3 | Notion | 5/6 (83%) |
| 4 | LINE Works | 3/6 (50%) |
| 5 | Google Workspace | 3/6 (50%) |
| 6 | Discord | 1/6 (17%) |
| 7 | Chatwork | 1/6 (17%) |
Method: 6 representative buyer questions via a large language model, 🇯🇵 Japan (日本語). Updated 10/16/2026. A proxy for how AI assistants describe this category.
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