Where can I download the SAPI 5.3 SDK?

We periodically get asked where someone can download the SAPI 5.3 SDK.

For SAPI 5.0 & 5.1, the SDK was a standalone download.  It is now part of the platform SDK.  So, all you need to do is go to http://msdn.microsoft.com and search for what you are looking for.  For example, if you search for "SAPI 5.3", the first result returned is the overview page for SAPI 5.3.  There is a discussion on what is new in SAPI 5.3, and then of course all the API documentation and samples are there.

Comments (8)

  1. varun.prakash says:


    I can still not download SAPI.

    The download link is broken. Can someone fix that?

  2. rotabush says:

    Same for me.  The first hit on the search comes to this page, the second hit is to this page: http://www.microsoft.com/downloads/details.aspx?FamilyID=5e86ec97-40a7-453f-b0ee-6583171b4530&DisplayLang=en

    This gives a page that says "We are sorry, the page you requested cannot be found."

    Is there another think this should go to?


  3. stevenha says:

    This is incredibly frustrating. I have coding being done on win7 to use SAPI 5.3 features, which works fine on a win7 box. But for testing on XP boxes, after installing .NET 4 framework, some XP boxes work, and others don't, because they seem to lack new SAPI on them.  So I've hunted for how to download and install the new SAPI dll's,  and figure out how to bundle them with my software, or how to give users instructions how to install SAPI themselves, and its lacking.  Please help.  How can install the new SAPI framework on an windows XP machine?

  4. loonytalk says:

    Seems like NextUp has a download link at http://www.nextup.com/sapi.html

    The direct download link for SAPI is: http://www.webaloud.com/…/Microsoft-English-TTS-51.msi

  5. newwizkid says:

    that is sapi51 I need the 5.3 version so windows vista can use the CyberBuddy program properly.

  6. pissed off says:

    this is a pathetic joke.

    there is no way to download the software

  7. this is a waste of time.. says:

    why sapi 5.3 and 5.4 is hard to find? are they for sale? or free .. i have been looking it for 2days..

  8. pergy says:

    it seems to me that sentence " It is now part of the platform SDK " means that you have to download Windows SDK for get SAPI (which is the part of it)


    and you will find sample sources in that directory as well. for instance, the win sdk 7.1 with sapi 5.4:


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