The CS-3 platform relies on Cerebras’ unique wafer-scale engine architecture, which utilizes a processor significantly larger than conventional AI chips. Manufacturing these systems requires specialized processes, including precision mechanical assembly, high-density power integration, and liquid cooling validation that differ sharply from standard server production. To meet the surge in demand from cloud providers and AI developers, Flex has invested in dedicated assembly lines and automated test infrastructure specifically tailored for wafer-scale hardware.

Beyond assembly, the Milpitas site is scaling up its logistics and quality control operations to handle the technical complexities of these systems. According to Cerebras COO Dhiraj Mallick, the collaboration demonstrates that sophisticated AI hardware can be built domestically by American engineers. The ramp-up, which involves new integration lines coming online through 2026, is also driving regional growth in high-skilled roles spanning systems integration, quality assurance, and supply chain management.