OCI Zettascale / Stargate by Oracle Corporation: status and timeline

OCI Zettascale / Stargate

Oracle's Zettascale data centers house GPU clusters for large-scale AI training and inference. Part of Stargate with OpenAI, building sites for frontier AI model development.

DeployStage 4 of 5

Abilene, Texas site operational at 0.3 GW; expansion to 10+ GW across sites by 2029.

Updated Jan 2025Checked 10 Oct0 updates this week

Milestones

Next · Stargate capacity expansion to 500 exaFLOPS

Zettascale data center concept announced2024Complete.
First Zettascale sites begin operations2025Complete.
Stargate joint venture launched2025Complete.
Stargate capacity expansion to 500 exaFLOPSTarget 2030Not yet reached.

Most important updates

Oracle joins OpenAI and SoftBank on Stargate: $500 billion AI infrastructure ventureJan 2025

Upcoming

2027Additional Stargate sites deployed (next)
2028Stargate reaches 100 exaFLOPS milestone
2030Stargate capacity expansion to 500 exaFLOPS

Current obstacles

Power grid capacity constraintsSites draw 100+ MW; most U.S. data center regions lack dedicated capacity. Grid upgrades and renewable sourcing are major constraints.
Cooling and thermal managementGPUs are power-dense; liquid cooling is mandatory but adds complexity and operational risk if cooling systems fail.
GPU supply chain competitionNVIDIA H100/H200 demand vastly exceeds supply; Oracle must compete for wafer allocation and maintain long-term agreements.

Physics limits

Electrical distribution limits scaleDelivering 100+ MW with <10% loss requires massive copper and power infrastructure; gains beyond this scale face exponential infrastructure costs.
GPU interconnect bandwidth limitsEven InfiniBand has finite bandwidth; beyond 10,000 GPUs, latency on collective operations (allreduce) becomes significant.

How it works

3 parts

Physical infrastructure

High-density GPU data centers

Zettascale packs thousands of GPUs with optimized thermal and power, using high-bandwidth interconnects (InfiniBand) for cluster communication.

Model training

Distributed training across thousands of GPUs

Frontier models use data parallelism and tensor parallelism; Zettascale provides connectivity and power to sustain distributed training.

Inference serving

Low-latency model deployment

Trained models deploy across the cluster for fast inference; high GPU density reduces latency and amortizes serving costs.

Spec sheet

Spec	OCI Zettascale / Stargate
Stargate total investment	$500 billion^R (reported)
Primary GPU architecture	NVIDIA H100/H200 clusters^R (reported)
Per-site power draw	100+ MW^E (estimated)

^R reported by the company · ^E our estimate

Update log

1 update

Jan 2025

Major: Oracle joins OpenAI and SoftBank on Stargate: $500 billion AI infrastructure venturePressPartnership

About Oracle Corporation

The team behind OCI Zettascale / Stargate

Oracle Corporation

Database, cloud infrastructure, OCI, enterprise software

Oracle is an enterprise software and cloud infrastructure provider. Founded in 1977, it specializes in databases, enterprise applications, and cloud. As of 2026, Oracle partners with OpenAI and SoftBank on Stargate, a $500 billion AI infrastructure venture.

Leading enterprise database provider with OCI cloud competing for hyperscale AI workloads.
2025 partner in Stargate: $500B AI infrastructure venture with OpenAI and SoftBank; operates Zettascale data centers.
Abilene, Texas Stargate site operational; expanding to 10+ GW across U.S. by 2029.

oracle.com (opens oracle.com)Company profile →

Founded: 197749 yrs
Headquarters: United States
Status: Public
Valuation: public
Staff: ~141,000Jun 2026
Works in: ComputingAI factories & supercomputers
Coverage: 1 program · 1 updatelatest 1 Jan 2025checked 10 Oct
Partners: OpenAI
People: Larry EllisonExecutive Chairman and Chief Technology OfficerSafra CatzExecutive Vice ChairClay MagouyrkCo-CEOMike SiciliaCo-CEO

Spec

OCI Zettascale / Stargate

Stargate total investment

$500 billion^R (reported)

Primary GPU architecture

NVIDIA H100/H200 clusters^R (reported)

Per-site power draw

100+ MW^E (estimated)