Elon Musk addressed subscriber grievances on Sunday, conceding that the operational expenditures for SpaceX’s AI agent, Grok Bot, were "unsustainably high" in proportion to the revenue it brings in. His comments came on the heels of user complaints regarding severe usage caps, arriving less than a fortnight after the billionaire celebrated the service as his most rapidly expanding product to date.

Replying to a post on X highlighting how quickly users were depleting their Grok bot usage limits during the week, Musk stated: "The cost of serving Grok Bot was unsustainably high relative to revenue."

During a separate thread on X involving a user frustrated by a multi-day wait for limit resets, Musk queried whether the pricing for upper-tier upgrades might be set too steeply.

While the tech mogul did not disclose precise operational figures or confirm if usage boundaries had officially been tightened, the dialogue underscored ongoing scaling pressures.

Grok Bot operates as an artificial intelligence agent distinct from the standalone Grok chatbot—comparable to Meta's Muse—and is accessible to subscribers on the $30 per month "Premium" tier and above.

Higher tiers, including the $100 monthly Super plan and $200 monthly Ultra plan, grant vastly expanded capacity, though it remains undetermined which specific subscription tiers encountered the restriction issues.

Musk's Prior Claims Regarding Grok Bot Growth

Addressing stakeholders during SpaceX’s Q3 earnings call two weeks prior, Musk lauded Grok Bot as the fastest-growing offering in his portfolio, declaring, “I’ve never seen anything grow this fast.” He highlighted that individual engagement continues to climb, explaining that as the tool grows more functional, weekly utilization expands rather than contracts. Furthermore, Musk outlined plans for an enterprise-scale roll-out, noting ongoing discussions with trusted clients ahead of a broader deployment slated for the coming weeks. He even projected that Grok Bot could ultimately consume the majority of the company's SI compute resources.

According to SpaceX President Gwynne Shotwell, Grok Bot commanded 800,000 paid weekly users by early October. During the earnings call, she reported that this figure had more than doubled over the preceding month, noting that corporate clients leverage the agent as a productivity force multiplier across sales, engineering, IT, and marketing as an around-the-clock digital collaborator.

Concurrently, multiple users on Cursor’s community forum flagged sudden, anomalous leaps in tracked Grok Bot consumption absent of any real surge in workload. SpaceX finalized a $60 billion acquisition of the AI coding platform in August, aligning Cursor’s pricing tiers with xAI. Although Cursor identified and fixed a dashboard reporting glitch on Sunday, it remains uncertain whether this bug triggered the elevated usage metrics. Under unified subscription frameworks, xAI documentation specifies that Grok and Cursor pull from a shared pool of weekly usage allowances.