On-Device AI Is Finally Real — Build a Copilot+ PC App That Runs 100% Offline
Last Updated on September 9, 2025 by Editorial Team
Author(s): Tarun Singh
Originally published on Towards AI.
On-device AI, explained in plain English — with a full working project you can run today.
Github Repo: on-device-npu-rag

The article discusses the advancements in on-device AI, focusing on building a local AI notes searcher that operates offline using privacy-first principles. It outlines the various components and technologies involved, such as ONNX Runtime and FAISS for efficient data retrieval, while emphasizing the ease of use and adaptability of the project. The author illustrates how to create a functional application that leverages local processing capabilities on modern PCs, addressing concerns like latency and the importance of keeping user data secure by ensuring that sensitive information never leaves the machine.
Read the full blog for free on Medium.
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