Prompt Depth Anything is a method for high-resolution and high-precision depth estimation. This method unlocks the potential of depth foundational models through prompting techniques, using iPhone LiDAR as a cue to guide the model in generating precise depth measurements of up to 4K resolution. Additionally, it introduces a scalable data pipeline for training and has released a more detailed ScanNet++ dataset with depth annotations. The main advantages of this technology include high-resolution and high-precision depth estimation, along with benefits for downstream applications such as 3D reconstruction and generalized robotic grasping.