Cloud Speech API provides fast and accurate speech recognition, converting audio, either from a microphone or from a file, to text in over 110 languages and variants.
https://cloud.google.com/speech/
Google Opens Access to its Speech-to-Text API: http://blog.zang.io/google-opens-access-speech-to-text-api
Introduction to Google Cloud Machine Learning APIs : https://www.slideshare.net/iromin/introduction-to-google-cloud-machine-learning-apis