Microsoft Build 2026: NVIDIA, Microsoft Push AI From The Cloud To Your PC With New RTX Spark Platform

San Francisco: The race to bring artificial intelligence closer to users took a significant step forward at Microsoft Build 2026, where NVIDIA and Microsoft unveiled a series of technologies aimed at transforming Windows PCs into AI-first devices capable of running advanced AI models and agents locally.

At the centre of the announcement is NVIDIA RTX Spark, a new AI-focused superchip designed for Windows laptops and compact desktop PCs. NVIDIA says the platform is purpose-built for the era of personal AI agents, delivering up to one petaflop of AI performance while supporting large language models with up to 120 billion parameters directly on-device. The move signals a broader shift in Microsoft's AI strategy. Instead of relying exclusively on cloud-based AI services, the company is increasingly enabling developers to build applications that can run AI workloads locally using a PC's CPU, GPU, or NPU. Technologies such as Windows AI Foundry and Foundry Local are designed to make on-device AI development more accessible while offering advantages in privacy, latency, and cost.

According to NVIDIA, RTX Spark combines its AI and graphics technologies, including CUDA, TensorRT, RTX and DLSS, in a platform optimised for AI development, content creation and gaming. The company says the new architecture will allow users to generate AI content, run sophisticated agents and process large datasets without depending entirely on cloud infrastructure.

The announcements also underscore the growing partnership between Microsoft and NVIDIA. Both companies revealed efforts to create a native Windows experience for AI agents, including new security mechanisms and tools such as NVIDIA OpenShell, which is designed to help AI agents operate securely on personal devices.

Microsoft's developer-focused push comes as demand grows for hybrid AI experiences that combine local processing with cloud capabilities. Running AI models on-device can reduce response times, improve privacy and lower operating costs, making it an attractive option for developers and enterprises alike.

Industry observers view the announcements as Microsoft's attempt to position Windows not just as an operating system, but as a platform for AI-native computing. Build 2026 has been heavily focused on local AI tooling, agent-based experiences and developer infrastructure, highlighting a future where PCs act as intelligent assistants rather than traditional computing devices.

The new RTX Spark-powered systems are expected to arrive later this year through partners including Microsoft, Dell, HP, Lenovo and ASUS, marking the first wave of Windows PCs built specifically for personal AI agents.