How to price serverless GPUs: Modal's interactive cost model

Modal published an interactive tool for estimating serverless versus reserved GPU costs, defaulting to current rates for a B200 GPU serverlessly on Modal and via three-year hyperscaler reservation. The model shows that when an application's peak-to-average ratio exceeds the reservation discount rate, serverless GPUs cost less overall, and Modal cites observed discounts of 2-5x against peak-to-average ratios of 5-10x.