Seoul, Korea, Apr 10 – SK Telecom (NYSE: SKM, hereinafter referred to as “SKT”) announced that it has signed a Memorandum of Understanding (MOU) with Arm and Rebellions to drive innovation in next-generation AI infrastructure.

Through this agreement, the three companies will jointly develop a solution that combines Arm’s newly launched AGI CPU and Rebellions’ upcoming RebelCard™, scheduled for release in the third quarter of this year, to enhance AI inference performance. The solution will be tested and verified in SK Telecom’s AI data centers.

Arm AGI CPU is optimized for high-density inference environments and large-scale AI deployment. Rebellions’ ‘RebelCard™’ is an AI accelerator chip specialized for large-scale AI inference. Recently, heterogeneous computing architectures that combine CPUs and AI accelerator chips are gaining significant attention in the AI server market. In this structure, the CPU handles general-purpose computing such as data processing and system operation, while the AI accelerator chip is dedicated to AI inference computation.

Compared to GPU-based servers, this architecture offers higher power efficiency and processing efficiency for AI inference tasks, as well as reduced operating costs. As a result, it is recognized as an efficient server architecture for data centers running large-scale AI services.

SKT plans to deploy servers equipped with this solution in its AI data centers to validate performance and stability. In particular, the company is reviewing the possibility of operating its sovereign AI foundation model, A.X K1, on these servers. Through this collaboration, SKT aims to secure low-power, high-efficiency AI inference infrastructure and further strengthen its competitiveness in the AI data center business.

Arm is a leading AI compute platform powering the world’s most advanced technologies. While Arm has traditionally focused on chip design, the company on March 24 announced the launch of its first Arm-designed silicon, Arm AGI CPU — a data center CPU optimized for high-density inference environments and large-scale AI deployment.

In March, at the “Arm Everywhere” event, Arm and Rebellions combined their respective chips to deliver a live demonstration of an agentic AI service based on OpenAI’s GPT OSS 120B, highlighting the potential applicability of this heterogeneous CPU–accelerator architecture to large-scale data center workloads.

Lee Jae-shin, Head of AI Business Development at SK Telecom, said, “By offering a full package that combines infrastructure optimized for inference with our sovereign AI foundation model A.X K1, we will further enhance the competitiveness of our AI data centers.”

Eddie Ramirez, Vice President of Go-to-Market, Cloud AI Business Unit, Arm, said, “The rapid growth of AI inference is driving demand for new data center infrastructure designed for large-scale deployments. Partners like SK Telecom and Rebellions played an important role in helping us build the Arm AGI CPU and modernize AI inference infrastructure.”

Oh Jin-wook, CTO of Rebellions, said, “By providing our ‘RebelCard’—which offers overwhelming performance and power efficiency—alongside our full-stack software, Rebellions has become a core pillar supporting next-generation AI data centers. We expect this 'one-team' collaboration of experts to serve as a significant precedent in the industry for building AI-specialized infrastructure.”