AI assistants most often recommend Rakuten for ecommerce platforms in π―π΅ Japan (ζ₯ζ¬θͺ), naming it in 100% of the buyer questions we tested, followed by Amazon and Shopify. We asked an AI model the questions buyers ask about ecommerce platforms and tallied which brands it named most β "share of voice" in AI answers, who AI recommends when no human is watching.
| # | Brand | AI share of voice |
|---|---|---|
| 1 | Rakuten | 6/6 (100%) |
| 2 | Amazon | 5/6 (83%) |
| 3 | Shopify | 4/6 (67%) |
| 4 | Yahoo!γ·γ§γγγ³γ° | 4/6 (67%) |
| 5 | BASE | 1/6 (17%) |
| 6 | Amazon Japan | 1/6 (17%) |
| 7 | ζ₯½ε€©εΈε ΄ | 1/6 (17%) |
| 8 | PayPayγ’γΌγ« | 1/6 (17%) |
Method: 6 representative buyer questions via a large language model, π―π΅ Japan (ζ₯ζ¬θͺ). Updated 6/23/2026. A proxy for how AI assistants describe this category.
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