An information processing apparatus includes: determination units that make determinations on an input using different methods, and obtain determination results for the input; a first output unit that outputs, when a certain percentage or more of the determination results match, a determination result matched at the certain percentage or more; a second output unit that outputs, when the first output unit does not find a determination result matched at the certain percentage or more, a final determination result for the input; and an accuracy rate calculation unit that calculates, when a determination result obtained by a determination unit of interest among the determination units corresponds to a determination result matched at the certain percentage or more or matches the determination result output by the second output unit, an accuracy rate of the determination unit of interest, regarding that the determination result obtained by the determination unit of interest is correct.