Grok Bot is growing fast—but Elon Musk says its costs are ‘unsustainably high’ compared to revenue
Grok is on a streak. On SpaceX’s Q3 earnings call on Oct. 20, CEO Elon Musk told analysts the company’s AI bot is “seeing the fastest growth of a product that I’ve ever seen in my life.”

TL;DR
- Grok Bot, SpaceX's AI agent, is experiencing rapid user growth, doubling its paid weekly users in a month.
- Elon Musk stated that the cost of serving Grok Bot is unsustainably high relative to its revenue.
- AI agents like Grok Bot perform multi-step tasks that consume more computing power than traditional chatbots.
- Meta is facing similar cost challenges with its AI product, Muse.
- SpaceX has made substantial investments in AI infrastructure, with capital expenditure significantly exceeding its Super Intelligence division's revenue.
- SpaceX generates revenue by leasing data center capacity to companies like Anthropic and Google.