What is SAPI5?

Microsoft Speech API (SAPI5) is the technology for voice recognition and synthesis provided by Microsoft. Starting with Windows XP, it ships as part of the Windows OS. If you are using a different OS, please consult the Microsoft Speech Technologies or the Speech SDK 5.1 sites (see addresses below).

If SAPI5 is not already available on your system, you will need to use a product equipped with a SAPI5-compatible speech engine or else to install the Speech SDK 5.1 or some other engine in order to provide an environment where SAPI5 can be used.
*We do not provide support with regards to SAPI5 nor other products.

Microsoft Speech Technology

Microsoft Speech SDK 5.1