Keyword spotting may be improved by using a competitor model. In some embodiments, audio data is received by a device. At least a portion of the audio data may be compared with a keyword model to obtain a first score. The keyword model may model a keyword. The portion of the audio data may also be compared with a competitor model to obtain a second score. The competitor model may model a competitor word, which may be a word that is similar to the keyword. The device may compare the first score and the second score to determine if a keyword is spoken.