A storage device includes a nonvolatile memory device, a controller, a processor, and a memory interface. The nonvolatile memory device includes first memory blocks to store a plurality of machine learning-based models and second memory blocks configured to store user data. The controller selects one of the machine learning-based models based on a model selection request. The processor loads modeldata associated with the selected model and schedules a tasks associated with the nonvolatile memory device based on the selected model. The memory interface accesses the second memory blocks of thenonvolatile memory device based on the scheduled tasks. The invention further provides an operation method of the storage device and a computing system including the storage device.