Flex to manufacture Cerebras AI accelerator systems in US

Flex inked a deal with Cerebras to scale production of the Cerebras CS-3 AI accelerator system at Flex's manufacturing facilities in Milpitas, California.

The expanded operation is expected to increase CS-3 production capacity by approximately 7x through 2026, supported by new production lines, expanded floor space, advanced test infrastructure, and additional skilled manufacturing talent based in California.

The CS-3 is built on Cerebras' industry-leading wafer-scale engine architecture, featuring a processor physically larger than any conventional AI chip. The system integrates advanced liquid cooling, high-density power delivery, precision mechanical assembly, and tightly coordinated networking infrastructure into a platform designed for large-scale AI training and inference.

"People often think the entire AI manufacturing and packaging supply chain lives overseas, but everyday across the U.S., teams of American engineers and technicians are building state-of-the-art AI systems that power frontier AI workloads around the world," Cerebras COO Dhiraj Mallick said.

Read the full press release here