The Device Capabilities API was deprecated on July 29, 2015. Get more information about our supported APIs.
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/apis/device-capabilities /apis/device-capabilities/docs
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The Address Book API was deprecated on July 29, 2015. Get more information about our supported APIs.
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/apis/address-book /apis/address-book/docs
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/apis/sms-mms /apis/mms/docs
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Attention

To access the Speech API, upgrade to Premium Access and fill out a request form (must be logged in to view form).

Attention

The Speech API requires Premium Access and special permission before it can be used.



  • Low-cost Speech API
  • Plug and play code
  • Cross-carrier and
    cross-platform
  • Access 19 languages
Want to learn more?

Dive into the documentation, learn about pricing or check out our QuickStart Tutorials.

  • Developers love using the AT&T Speech API!
    "The fact that the AT&T Speech API and WATSON speech engine are platform-agnostic is really important... We can now provide a consistent experience to customers across mobile platforms... We were elated by how easy it was!"

    Sam Dozer, Lead Mobile Engineer at Voxy™

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