Never seen anything grow as fast as @Grok @Bot ! And there is no free tier, which means people are deriving real value in excess of what they pay. As the saying goes, you get what you pay for.
Musk: Grok Bot growing faster than anything he's seen
Elon Musk says he has never seen anything grow as fast as Grok Bot, noting it has no free tier, meaning users derive real value exceeding what they pay.