GPU superclusters: 350K H100s → Prometheus & Hyperion
Gigawatt-scale factories for intelligence
Latest: Prometheus online 2026 (~1GW); Hyperion expanded to 5GW, $50B+ (Jul 2026)
The compute behind everything: Zuckerberg pledged 350,000 H100s (~600K H100-equivalents) by end of 2024; Llama 3 trained on twin 24,576-GPU clusters. The next act is gigawatt-scale 'titan clusters' — Prometheus (Ohio, coming online 2026) and Hyperion (Louisiana), expanded in July 2026 from 2GW to 5GW at a cost topping $50 billion. 2026 AI capex: $115-135B.
Why it matters
The compute that made Llama and Muse possible: two 24,576-GPU H100 clusters trained Llama 3, on the way to 350,000 H100s (about 600,000 H100-equivalents) by end of 2024. The next step is gigawatt-scale Prometheus and Hyperion, the latter expanded to 5GW in July 2026, backed by $115-135B of 2026 AI capex.
Facts
- Zuckerberg said Hyperion's footprint would cover a significant part of Manhattan.
- Hyperion's price tag nearly doubled from $27B to $50B+ in one 2026 announcement.
Try it yourself
Meta Engineering: building the GenAI clusters ↗ Prometheus and Hyperion analysis (Data Center Frontier) ↗
Sources
engineering.fb.com ↗qz.com ↗datacenterfrontier.com ↗