Flex and Cerebras Systems Inc. announced an expanded manufacturing partnership to scale production of the Cerebras CS-3 at Flex 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 partnership reflects a significant expansion of advanced manufacturing capacity in the United States, demonstrating that some of the world's most sophisticated AI systems are being designed, assembled, integrated, and tested in Silicon Valley. The CS-3 is built on Cerebras' wafer-scale engine architecture and integrates advanced liquid cooling, high-density power delivery, precision mechanical assembly, and networking infrastructure. Manufacturing the CS-3 requires specialized handling processes, custom tooling, precision calibration, and extensive system-level validation, with Flex engineers developing dedicated assembly flows and automated test stations tailored to wafer-scale computing systems.