A created sentence evaluating device 1 using a neural network unit 10 of an encoder/decoder model in which an encoder unit 100 inputs a sentence in a first language, and a decoder unit 101 sequentially outputs word candidates for a sentence in a second language corresponding to the sentence in the first language and likelihood of the word candidates includes: an encoder input unit 13 configured to input a created sentence created in the second language to the encoder unit 100 sequentially for each word; and an evaluation unit 17 configured to evaluate words of the created sentence on the basis of word candidates in the second language and the likelihood of the word candidates output by the decoder unit 101 on the basis of an input from the encoder input unit 13.
CREATED TEXT EVALUATION DEVICE