Mixx Technologies, a start-up based in Santa Clara, California, closed a $33 million Series-A round to accelerate its full-stack optical integration platform for next-generation AI infrastructure. ICM HPQC Fund led the round, with participation from TDK Ventures, Systemiq Capital, Banpu Innovation & Ventures, G Vision Capital, Ajinomoto Group Ventures, AVITIC Innovation Fund, and other strategic investors. The company plans to scale product development and expand R&D operations across the U.S., India, and Taiwan.
Founded by technologists behind Intel’s silicon-photonics transceivers and Broadcom’s early co-packaged optics efforts, Mixx is targeting the power, latency, and scalability constraints of modern AI systems. Its HBxIO platform integrates photonics, packaging, and system-level architecture to create a high-radix optical fabric designed to flatten network topologies and increase parallelism for large-scale inference clusters.
Mixx is positioning HBxIO as a system-level optical engine that supports open standards, multi-protocol integration, and high-density connectivity. The company claims significant improvements in power efficiency, radix expansion, and latency reduction through direct-to-ASIC 3.5D optical integration. The technology is also designed to support future composable architectures that dynamically interconnect compute, memory, and accelerators at the package level.
• Switchless clusters: High-radix optical connectivity with up to 4× more ports than copper SerDes-based CPO, enabling flatter topologies and up to 32× compute-efficiency gains for inference.
• 3.5D ASIC-attached optics: Direct silicon integration targeting up to 75% lower power use and 2× lower latency compared to current interconnects.
• Composable infrastructure: Optical fabric enabling dynamic connection of compute, memory, and acceleration resources.
• Open-standards design: Multi-protocol, interoperable HBxIO architecture intended for hyperscale deployment.
“We’re rethinking the fundamentals to optimize end-to-end data movement, where every pico-joule saved and nanosecond gained compounds across trillions of interconnected nodes,” said Vivek Raghuraman, CEO and co-founder of Mixx Technologies.
🌐 Analysis
Mixx enters a optical-interconnect landscape where hyperscalers are evaluating CPO, LPO, 3D-packaged optics, and proprietary fabrics to scale AI clusters beyond current power and bandwidth limits. Its focus on high-radix topologies and direct ASIC attachment aligns with broader industry shifts seen in recent roadmaps from Broadcom, NVIDIA, Intel, and emerging startups pursuing 3D/2.5D photonic integration. The Series-A backing from system-level, sustainability-focused, and semiconductor-adjacent investors signals growing market alignment around reducing interconnect power as inference workloads expand.
