Grok Bot: Musk Cites Costs to Limit Usage

Key Takeaways

1SpaceX claims 800,000 weekly paying users for Grok Bot

2Elon Musk justifies the usage limits by an "unsustainably high" cost

3A $8 per month X subscription including Grok Bot is planned

4The profitability of AI agents, at SpaceX as well as at Meta, remains uncertain

Why it matters : AI agents attract millions of users, but their business model is not yet viable, even for industry giants.

Elon Musk claims that the cost of providing Grok Bot is "unsustainably" high in relation to revenues, which is why there are weekly usage caps. SpaceX reports 800,000 paying users per week and plans to integrate the agent into an $8 X subscription, while the profitability of AI agents, at Meta and elsewhere, remains uncertain.

The Profitability of AI Agents Remains Uncertain Despite Volumes

SpaceX indicated last month that Grok Bot has 800,000 weekly paying users. At Meta, the operating cost of Muse has not been disclosed, even though the agent exceeds 10 million users. Mark Zuckerberg clarified last month that Muse is very computationally intensive and is not yet profitable. More broadly, the profitability of AI agents remains uncertain.

Weekly Caps to Contain AI Costs

All subscription levels of Grok Bot include variable usage limits that reset each week. This practice, also seen with agents like Muse, aims to prevent users from accumulating exorbitant AI bills. Users have reported reaching their usage limits, including earlier than expected over the weekend, and others say they are seeing their allocations deplete faster than usual.

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Musk Acknowledges Cuts to Allocations and Questions Tier Pricing

Elon Musk states that the cost of providing Grok Bot is "unsustainably high," specifying on X that this cost is "unsustainably high relative to revenues." He questioned whether the extra cost to upgrade to a higher usage plan was too steep and added that reducing allocations, while informing users, was "just sensible." Musk argues that an era of abundance in AI is approaching, while indicating that this does not currently imply unlimited access to Grok Bot. His admission has drawn mockery from some users on X, who recalled his recent comments deeming the idea of saving in anticipation of this abundance as "useless."

Offering, Integrations, and Product Trajectory at SpaceX

Launched in August, Grok Bot is an AI agent that uses a virtual computer to perform tasks such as shopping. It is offered at several levels, from free to $200 per month. SpaceX also intends to include Grok Bot in a new $8 X subscription plan, which includes X premium as well as Cursor, an AI coding platform acquired earlier this year. In October, Elon Musk specified that the agent would also rely on other AI models, including Claude Opus 5.5, MidJourney, and Suno. He further told investors that Grok Bot is showing the fastest growth he has observed for a product and could eventually absorb most of their computing power in Super Intelligence.