1. A computer-implemented method comprising: receiving speech audio data generated by a microphone of a computing device, wherein the speech audio data corresponds to an utterance received by the microphone; providing a first transcription of the utterance for output in a first output region of a display of the computing device and a second transcription of at least a portion of the utterance for output in a second output region of the display of the computing device, wherein the first transcription of the utterance and the second transcription of the at least a portion of the utterance are each obtained from an automated speech recognizer operable to transcribe the speech audio data corresponding to the utterance; receiving a user selection of a portion of the first transcription of the utterance, the user-selected portion of the first transcription of the utterance comprising one or more words; in response to receiving the user selection of the portion of the first transcription of the utterance, presenting one or more controls at the display of the computing device that each correspond to one or more alternate words for the user-selected portion of the first transcription of the utterance; receiving a user selection of a particular control from among the one or more controls; and updating the second transcription of the at least a portion of the utterance output in the second output region of the display of the computing device based at least on the user selection of the particular control.