SpaceX Chief Executive Elon Musk said Sunday that serving Grok Bot, the company's agentic AI product, cost too much compared with the revenue it generated, after paying subscribers reported that weekly usage limits ran out early^1,2.

Musk wrote on X, in a reply rather than a main-feed post, that "The cost of serving Grok Bot was unsustainably high relative to revenue," TechCrunch and a Techmeme roundup of Forbes reporting said^1,2.

TechCrunch said some users over Halloween weekend found weekly meters unexpectedly maxed out, including reports of usage jumping from about 50% to 100% without overnight use, and that Musk confirmed the situation was not a glitch².

Forbes, as summarized by Techmeme, said Musk did not state how much Grok Bot costs to operate or whether SpaceX had lowered allowances, and that in a separate X exchange he asked whether a higher-usage subscription tier cost too much¹.

Grok Bot is a separate product from the Grok chatbot and is offered on paid plans, Forbes reported via Techmeme, including a $30-a-month Premium tier and higher Super and Ultra plans¹.

The comments came less than two weeks after Musk, on SpaceX's third-quarter earnings call, described Grok Bot as growing faster than any product he had seen, Techmeme's Forbes summary said¹. SpaceX President Gwynne Shotwell said on that call that Grok Bot had 800,000 paid weekly users in early October, more than double the prior month¹.

TechCrunch said a SpaceX filing last month put AI at 52% of company income and said the Super Intelligence division posted a $431 million profit that would have been higher but for $1.2 billion in one-time costs tied to acquiring Cursor².

Forbes, via Techmeme, said Cursor's status page reported a billing and usage dashboard problem on Sunday that was later marked resolved, and that it was unclear whether that explained sudden meter spikes some users described on Cursor's forum¹. Musk has not said how limits will work going forward, TechCrunch reported².