Windows AI Foundry is a unified, reliable, and secure platform supporting the AI developer lifecycle from model selection, fine-tuning, optimizing, and deployment across CPU, GPU, NPU, and cloud. It integrates tools like Windows ML, enabling developers to bring their own models and deploy them efficiently across the silicon partner ecosystem, including AMD, Intel, NVIDIA, and Qualcomm, spanning CPU, GPU, and NPU. Foundry Local allows developers to pull in their favorite open source models and make their apps smarter. It offers ready-to-use AI APIs powered by on-device models, optimized for efficiency and performance on Copilot+ PC devices with minimal setup required. These APIs include capabilities such as text recognition (OCR), image super resolution, image segmentation, image description, and object erasing. Developers can customize Windows inbox models with their own data using LoRA for Phi Silica.