1. A method comprising: selecting, by a computing device, sets of two or more text candidates from a plurality of text candidates corresponding to vocal input; for each set of the sets of two or more text candidates, outputting, by the computing device, representations of each of the respective two or more text candidates in the set to a plurality of users, wherein the representations are outputted as audio; receiving selections from each of the plurality of users of one of the respective two or more text candidates from each set, wherein the selections are based at least in part on satisfying a criterion; and determining that a text candidate included in the plurality of text candidates has a highest probability out of the plurality of text candidates of being a correct textual transcription of the vocal input based at least in part on the selections from the plurality of users, wherein the text candidate is a least-selected candidate by the plurality of users out of the plurality of text candidates.