ReadSpeaker speechCloud API

Increase interactivity and usability by speech-enabling your apps and devices.

Cloud-Based Speech Generation

ReadSpeaker speechCloud API is an online text-to-speech API for making desktop/web/mobile applications and Internet-connected devices talk.

Easy to integrate, straightforward, and high-capacity, ReadSpeaker speechCloud API gives you access to high-quality voices in many different languages to read the text in your apps and devices.

With the increasing amount of Internet-connected devices, the need for audio interactivity is also on the rise.

To meet that demand, ReadSpeaker speechCloud API enables you to have your application/software send text and receive text-to-speech generated audio files to be played back on Internet-connected apps and devices.

ReadSpeaker speechCloud API can also easily be used in the very popular open source communication application platform Asterisk to add text-to-speech capabilities to PBX/IVR systems. 


  • Built-in customer-specific dictionary where customers can control how certain words are read
  • Multiple audio file formats (A-law, u-law, PCM, WAV, Ogg, MP3)
  • Choice of several languages and voices using state-of-the art speech synthesis
  • Sample code in different programming languages: Java (Android), Objective C (iOS), PHP, ASP, Flash/ActionScript
  • Statistics interface (via web and API)
  • Easy-to-use web interface containing everything you need to get started
  • AGI script which supports most versions on Asterisk on Linux
  • Have more control over how the text is read with SSML (Speech Synthesis Markup Language) ​input ​support. When activated in your account, it is possible to insert pauses/breaks of certain length, insert phonetic transcriptions and do voice and language switching in the same text.
  • Online payment system to easily purchase your API credits for our default voices


ReadSpeaker speechCloud API offers you an easy pay-as-you-go way to:

  • Add more interactivity and usability to your software and devices.
  • Meet your users where they are and how they prefer to interact with your products and services.
  • Seamlessly and cost-effectively speech-enable all sorts of apps and devices without the need to use a resource-demanding text-to-speech engine.

Speech-Enable a Variety of Applications and Devices

Developers can now use ReadSpeaker speechCloud API to create all sorts of talking apps and devices that are populating the Internet of Things, such as:

  • Household appliances
  • Interactive billboards
  • Connected cars
  • Medical devices
  • Interactive kiosks
  • Talking clocks
  • Translation apps
  • Social network readers
  • Navigation apps
  • Audio guides
  • Industrial appliances
  • eBook readers
  • Email readers
  • SMS readers
  • Pronunciation apps
  • Talking notepad
  • News reading apps
  • Weather readers
  • Talking stock prices


* You will be redirected to the ReadSpeaker Web Application Service Platform where you can sign up for a trial account to speech-enable your apps and devices. Contact us for our complete selection of languages and voices and/or for larger volume discounts.

Please note: this service is for streaming audio only; no static audio files may be produced, downloaded, or distributed. For audio file production licensing, please contact us.