Midjourney quantifies usage via "GPU-minutes" and "GPU-hours", metrics related to compute-time for images. One GPU-minute equates to 1 /imagine, 3 variations, 1 upscale, or 0.7 max-upscales. The Standard Plan offers 15 GPU hours/month, translating to 1060 uses of /imagine. A more typical usage scenario might include 690 uses of /imagine, 230 variations, and 230 upscales.