Provided is an information processing apparatus that is capable of changing the processing performance for each customer and executing a series of tasks related to reading of a document. A service-level-information-acquiring unit acquires service-level information from an image forming apparatus. A processing-capacity-changing unit changes the degree of processing capacity by its own apparatus in accordance with the service-level information. The processing-capacity-changing unit also changes the degree of processing capacity by changing a number of allocated execution units of a task-executing unit within a specified time.