Morgan Stanley has a more detailed estimations on the cost of always on AI agents
Light users mainly consume CPU resources.
Heavy users increasingly become a GPU inference problem.
Takeaway:
If Muse becomes wildly successful, does Meta have enough CPU capacity to support it?
Yes. Meta's 2026 CPU purchases alone could theoretically support ~1 billion daily active Muse users.
They will build or rent about 600m vCPUs, mostly from AMD.
Why don't they need 1 billion instances for 1 billion users?
Each user's agent is only active about 3 hours out of 24 hours per day
Therefore only 12.5% are actively consuming CPU at a given moment.
So, 1 billion × 12.5% = 125 million concurrently active users
However, usage isn't flat.
So, about 300M instances needed
Source: Morgan Stanley
$META Platforms Inc | North America
23 Days of Musing...Top Investor Questions and Our Answers
Agents are expensive because they need a lot more inference
But in fact, most of the cost is NOT inference.
It's keeping an agent alive
AI agents need A LOT OF CPUs and A LOT OF memory to get things done!!!