According to fedidb.org, kbin.social is currently the biggest instance in the threadiverse!

As of right now:

• kbin.social has 36,508 total users: https://fedidb.org/network/instance/kbin.social
• lemmy.ml has 36,185: https://fedidb.org/network/instance/lemmy.ml
• lemmy.world has 33,945: https://fedidb.org/network/instance/lemmy.world

Well done, kbinauts!

(For completeness: Lemmy as a whole is still much larger than kbin by 330,192 users to 41,477.)