1. A computer-implemented method for improving computer speed and accuracy of automatic speech transcription, comprising: generating, by at least one processor, at least one speech recognition model specification for a plurality of distinct speech-to-text transcription engines; wherein each distinct speech-to-text transcription engine corresponds to a respective distinct speech recognition model; wherein, for each distinct speech-to-text transcription engine, the at least one speech recognition model specification at least identifies: i) a respective value for at least one pre-transcription evaluation parameter, and ii) a respective value for at least one post-transcription evaluation parameter; wherein the generating the at least one speech recognition model specification comprises: receiving, by the at least one processor, at least one training audio recording and at least one truth transcript of the at least one training audio recording; segmenting, by the at least one processor, the at least one training audio recording into a plurality of training audio segments and the at least one truth transcript into a plurality of corresponding truth training segment transcripts; applying, by the at least one processor, at least one pre-transcription audio classifier to each training audio segment of the plurality of training audio segments to generate first metadata classifying each training audio segment based at least on: i) language, ii) audio quality, and iii) accent; applying, by the at least one processor, at least one text classifier to each corresponding truth training segment transcript of the plurality of corresponding truth training segment transcripts to generate second metadata classifying each corresponding truth training segment transcript based at least on at least one content category; combining, by the at least one processor, the plurality of training audio segments, the plurality of corresponding truth training segment transcripts, the first metadata, and the second metadata to form at least one benchmark set; testing, by the at least one processor, each distinct speech-to-text transcription engine of the plurality of distinct speech-to-text transcription engines based on the at least one benchmark set to form a plurality of model result sets; wherein each model result set corresponds to a respective distinct speech-to-text transcription engine; wherein each model result set comprises: i) the at least one benchmark set, ii) at least one model-specific training hypothesis for each training audio segment, iii) at least one confidence value associated with the at least one model-specific training hypothesis, and iv) at least one word error rate (WER) associated with the at least one model-specific training hypothesis; determining, by the at least one processor, a respective set of transcription decisions for each distinct speech-to-text transcription engine of the plurality of distinct speech-to-text transcription engines, wherein the respective set of transcription decisions defines, for each distinct speech-to-text transcription engine, the value of the at least one pre-transcription evaluation parameter and the value of the at least one post-transcription evaluation parameter; and combining, by the at least one processor, each respective set of transcription decisions for each distinct speech-to-text transcription engine of the plurality of distinct speech-to-text transcription engines into the at least one speech recognition model specification for the plurality of distinct speech-to-text transcription engines; receiving, by the at least one processor, at least one audio recording representing at least one speech of at least one person; segmenting, by the at least one processor, the at least one audio recording into a plurality of audio segments; wherein in each audio segment corresponds to a respective single phrase of a respective single person that has been bounded by points of silence in the at least one audio recording; determining, by the at least one processor, based on the respective value of the at least one pre-transcription evaluation parameter of the respective distinct speech recognition model in the at least one speech recognition model specification, a respective distinct speech-to-text transcription engine from the plurality of distinct speech-to-text transcription engines to be utilized to transcribe a respective audio segment of the plurality of audio segments; submitting, by the at least one processor, the respective audio segment to the respective distinct speech-to-text transcription engine; receiving, by the at least one processor, from the respective distinct speech-to-text transcription engine, at least one hypothesis for the respective audio segment; accepting, by the at least one processor, the at least one hypothesis for the respective audio segment based on the respective value of the at least one post-transcription evaluation parameter of the respective distinct speech recognition model in the at least one speech recognition model specification to obtain a respective accepted hypothesis for the respective audio segment of the plurality of audio segments of the at least one audio recording; wherein the accepting of the at least one hypothesis for each respective audio segment as the respective accepted hypothesis for the respective audio segment removes a need to submit the respective audio segment to another distinct speech-to-text transcription engine from the plurality of distinct speech-to-text transcription engines resulting in the improved computer speed and the accuracy of automatic speech transcription; generating, by the at least one processor, at least one transcript of the at least one audio recording from respective accepted hypotheses for the plurality of audio segments; and outputting, by the at least one processor, the at least one transcript of the at least one audio recording.