Cerebras CS4

The Fastest AI Just Got Faster. Introducing the all new Cerebras CS-4, a revolutionary rack-scale solution that delivers upto 30x faster inference compared to GPUs, enhanced economics, and a simple path todeploy hyperscale capacity. It is the architecture for frontier AI.​ Three WSE-3 Turbo per System​ Each wafer delivers up to 2x the speed of the previous generation​ More Performance per Wafer​ All new power, cooling, and I/O unleashes even more performance per wafer​ Nexus Rack-Scale Platform Enables rapid deployment in hyperscale datacenters​ Up to 30x faster than GPUs​ Powered by WSE-Turbo, CS-4 delivers up to 30x faster inference compared to GPU systems, setting a new record for the fastest inference available in production.​ Higher ultrafast throughput The CS-4 solution shifts the inference Pareto frontier, delivering up to 10x more throughput per watt than CS-3 while generating tokens up to 30x faster than production GPU systems. The result is a system designed to deliver both throughput and interactivity.​ Frontier-ready architecture By reducing wafer-to-wafer interconnect latency to 2 microseconds, CS-4 delivers more than 1,000 tokens per second on models exceeding 10 trillion parameters, preserving interactive decode performance at unprecedented scale.​ BUILT FOR HYPERSCALE​ CS-4 is the first iteration of the new Cerebras Nexus Platform Architecture. It is built around a modular concept with three foundational elements: Compute, Power, and I/O – each with significant innovation to simplify manufacturing, deployment, maintenance, and upgrades.​ Modular compute backpack design Cerebras has fundamentally re-imagined the server. Each Wafer-Scale Backpack is a self-contained assembly thatfolds the wafer, power conversion, direct liquid cooling, high-speed I/O, and control electronics into a compact 3D package with 50% fewer components. This design simplifies manufacturing and reduces deployment time from days to hours.​ High-density power delivery With power delivery just 0.5 millimeters away from the processor - roughly 100x closer than the roughly 50mm of conventional GPU boards - CS-4 nearly eliminates board-level power loss. This enables the delivery of twice as much power to the WSE-3T, enabling higher operating frequencies and faster token generation.​ Next-gen wafer I/O interface CS-4 introduces a new programmable I/O subsystem that doubles I/O bandwidth and reduces latency,benefitting both aggregated and disaggregated solutions. The Wafer I/O Module also enables wafers to be linked within and across racks without a switch,for wafer-to-wafer latency as low as two microseconds that is key to interactivity for models with tens of trillions of parameters.​ Deploy infrastructure then compute CS-4 separates the stable power, cooling, and network layer from its modular wafer-scale compute. The Cerebras PowerRack can be installed and facility-qualified before compute arrives. Compute backpacks then slide into place and connect to power, cooling, and data—reducing deployment from days to hours while simplifying service and future upgrades at hyperscale.​ CS-4 by the numbers First CS-4 shipments begin this quarter.​ Bring the fastest AI to your data center.​ ​ Get startedDatasheet FAQ