Thibault Sottiaux tops Similarweb's X account ranking for September

Similarweb ranks Thibault Sottiaux, an OpenAI staff member posting as @thsottiaux, as the most popular account on X by traffic share for September 2026, ahead of Elon Musk.

The report comes from the account Testing Catalog (@testingcatalog), which links the attention to banked resets and OpenAI DevDay communications. The post says these communications equal free tokens, but the source gives no details on how that works. The ranking itself is reported by the account, not verified against Similarweb's published data.