Rebellions and ai& Partner to Bring Energy-Efficient AI Inference Infrastructure to Japan
Rebellions, a global leader in AI inference infrastructure, and ai&, a vertically integrated global AI technology company, are partnering to deploy Rebellions RebelRack within ai&’s heterogeneous infrastructure as part of the ai& inference service in Japan.
The collaboration expands domestic access to Rebellions-powered inference, supporting Japan’s sovereign AI priorities.
ai& will begin deploying Rebellions-powered infrastructure at its Tokyo data center, with plans to scale to 100+ RebelRack units. The rollout aligns with ai&’s $2 billion+ infrastructure investment, five planned operational sites by year-end 2026, and a 40 MW capacity target by year-end 2027.
“The economics of inference directly influence how widely AI can be deployed and how much it can be used,” says Sunghyun Park, Co-founder and CEO, Rebellions. “Lowering the unit cost of serving tokens gives providers room to create new pricing tiers, support more applications, and serve customers with different compute requirements and budgets. ai& has built a heterogeneous infrastructure platform around that flexibility. Establishing Rebellions inside Japan gives us a direct path to enterprise, government, and developer demand while adding efficient inference capacity to the country’s AI infrastructure.”
“ai& operates a heterogeneous infrastructure model that incorporates multiple compute architectures across AI workloads. Rebellions adds an inference-optimized architecture engineered for high power efficiency and lower operating costs, giving ai& greater flexibility in how it provisions inference capacity and structures its services.
These economics can support new, lower-cost inference tiers designed to make AI services accessible across a wider range of applications, organizations, and budget requirements.
As AI moves from experimentation to production, inference economics, particularly performance, power efficiency, and cost, will increasingly shape infrastructure decisions,” said Matt Eastwood, SVP, WW Research at IDC.
“ai&’s deployment of Rebellions at commercial scale is an important example of purpose-built AI silicon emerging as a viable infrastructure option for inference. Greater choice at the accelerator layer will be increasingly important as service providers, enterprises, and governments look to scale AI capacity efficiently.”
Rebellions hardware integrates with ai&’s existing workflows and widely used open-source frameworks, enabling seamless adoption and same-day operational readiness upon delivery.
“Heterogeneous infrastructure means using the right hardware for the right workload. Rebellions fits that model — its efficiency gives us more flexibility in how we structure the economics of our services, and it builds on the same open-source frameworks our engineers already use. This partnership expands the inference options we can offer customers in Japan, with a foundation to take it further,” says David Bennett, Co-Founder and CEO of ai&.
Rebellions has raised $850 million to date and is shipping its RebelRack™ and RebelPOD™ systems. Backed by $2 billion+ in committed infrastructure capital, ai& plans five operational sites by year-end 2026 and 40 MW of capacity by year-end 2027. The partnership lays the groundwork for expansion across infrastructure and markets.
