14. The computing device of claim 13 , wherein the at least one user device comprises an instant messaging application, and wherein the first text is an instant message received by the second participant to the conversation.
13. A computing device that performs voice recognition, at least in part, using a language model incorporating a plurality of words and a plurality of n-grams, each of the plurality of n-grams formed by two or more of the plurality of words and defining a probability of occurrence of each word in the respective n-gram given the occurrence of one of the two or more of the plurality of words forming the respective n-gram, the computing device comprising: at least one input to receive a first text comprising a sequence of one or more words from a first participant in a text-based conversation with a second participant via at least one user device and receive a voice response provided by the second participant in the text-based conversation in response to the first text; and at least one processor coupled to the at least one input, the at least one processor programmed to: select at least one of the plurality of n-grams from the language model that includes at least one word in the first text; and automatically recognize at least a portion of the voice response to provide a second text, at least in part, by using the at least one selected n-gram; maintain a history of recognized words and received texts in the text-based conversation; and maintain an identifier representing a change in speaker from the first or the second participant to the other.