The Free On-line Dictionary of Computing (30 December 2018):

Speech Application Programming Interface

    (SAPI) Microsoft's standard API
   for speech synthesis and speech recognition in Windows 95.
   The idea is to let developers try out and use various
   low-level speech software from any number of verndors, while
   retaining the same API.

   Mike Rozak is the lead of the SAPI project at Microsoft.
   Numerous major speech vendors have announced SAPI-support
   plans.  SRAPI, the competing speech recognition API by
   Lotus/WordPerfect, is fast becoming obsolete.

   (1996-03-04)