How to Install Microsoft’s Speech API V5 for ChattyInfty

ChattyInfty requires that Microsoft’s Speech API (SAPI) Version 5 be installed on your PC.

If Microsoft’s Speech API V5 is not installed on your PC, please download and install it.


  1. Click this link to take you to Microsoft’s download page.
  2. Click on the “Download” button
  3. Click the “checkbox” in front of “SpeechSDK51.exe (68.0 MB).”
  4. Click the “Next” button.
  5. Follow the “Download Center” instructions.