title: What is the difference between Chrome TTS, Google TTS, Cloud Speech API, and Android TTS?
body: <p>Chrome TTS: <a href="https://developer.chrome.com/apps/tts" rel="nofollow noreferrer">https://developer.chrome.com/apps/tts</a></p>
  
  <p>Google TTS: <a href="https://play.google.com/store/apps/details?id=com.google.android.tts&amp;hl=en" rel="nofollow noreferrer">https://play.google.com/store/apps/details?id=com.google.android.tts&amp;hl=en</a></p>
  
  <p>Cloud Speech API: <a href="https://cloud.google.com/speech/" rel="nofollow noreferrer">https://cloud.google.com/speech/</a></p>
  
  <p>Android TTS: <a href="https://developer.android.com/reference/android/speech/tts/TextToSpeech.html" rel="nofollow noreferrer">https://developer.android.com/reference/android/speech/tts/TextToSpeech.html</a></p>
  
  <p>I'm sure there is probably more that I am missing. Ultimately I want to figure out what engine is behind "Okay Google", and see whether that technology exists off the cloud. Figuring out the difference between google's offerings would be a good first start.</p>