Introducing CS-4: The Fastest AI Accelerator in the Industry Learn more >>
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.
Each wafer delivers up to 2x the speed of the previous generation
All new power, cooling, and I/O unleashes even more performance per wafer
Enables rapid deployment in hyperscale datacenters
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.
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.
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.
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.
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.
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.
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.