Estimating the compute cost for Muse to serve 100M users

Kenneth Auchenberg 🛠 @auchenbergOriginally posted 2026.09.28

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For Muse to serve 100M users, Meta needs: - 25M live VM's = about 65K CPUs. - 25M live VMs * 3GB = 75PB of physical DRAM. At the current public pricing, that is ~$2.8B in just CPUs and memory. As we enter an agent-first world, we need more efficient ways to run agentic compute, as we simply won't have enough CPUs and memory. Building something? I'd love to talk to you!

This post quotes another post: “Estimating the infrastructure needed to serve 100M Muse DAU”