You may be able to improve the accuracy of speech recognition of Plivo GetInput XML by experimenting with the following features.
Speech Adaptation with Hints
Provide a set of hint words and phrases to improve speech recognition accuracy. This feature can greatly improve transcription accuracy of proper nouns, homophones (ex: one, won), and domain-specific words rarely used in the general parlance. You can build a repository of words and phrases expected from the speaker in the hints attribute of GetInput XML.
Experiment with the pre-built speech recognition models depending on your use case. We recommend using the command_and_search model for command-driven IVRs, and the phone_call model for more informal speech.
To learn more about Automatic Speech Recognition with GetInput XML, read our detailed reference documentation here.