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2025-07-31
v.1.2.0

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Supertone API Update

Several new features have been added to the Supertone API.
In this release, Preset Voices and Custom Voices have been separated, and voice cloning registration via API is now supported.
Additionally, a beta version of the streaming TTS has been released.

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Key Updates

  1. Separation of Preset Voice and Custom Voice
    • Preset Voice: Voices created and provided by Supertone
    • Custom Voice: Voices registered and managed by the customer
  2. Voice Cloning registration feature added to the API
    • Voice cloning, previously only available in Supertone Play, is now also supported via API
  3. Streaming TTS (Beta) released
    • A beta version of the streaming TTS API is now available, ideal for real-time applications such as AI chatbots and character-based chats
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2025-05-28
v.1.1.0

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Supertone API Grand Open

Supertone API has officially launched after completing its closed beta phase. This release features a complete overhaul of the service structure and API usability, evolving into a more intuitive and scalable voice generation platform through integration with Play and unification of the voice system.

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Major Changes

  1. Voice ID Structure Redesign
    • Changed from existing {character-language-style} combination → unified to character-based voice_id
    • language and style parameters separated into body input for flexible calling
  2. New Model Introduction
    • Replaced existing pro, turbo → unified into single sona_speech_1 model
    • Improved speech quality and increased text length limit (200 → 300 characters)
  3. Cloned Voice API Call Support
    • Cloned voices created in Play can now be called via API
    • Automatic integration within the same account, maintaining permission-based security
  4. Play and Pricing Integration
    • API usage applies Play’s credit system directly
    • Shared credits and integrated billing without separate pricing plans
  5. Enhanced Voice Search Features
    • Filtering/exploration possible with GET /voices, GET /voices/search APIs
    • Provides supported languages/styles/samples for each voice
  6. Predict Duration API Provision
    • Text length prediction possible before voice generation (no credit deduction)
  7. New User Guide/Documentation
    • Complete practical documentation including Quickstart, Voice Selection, Error Handling, FAQ
    • Full documentation renewal considering Play ↔ API integration flow Through this update, Supertone API has evolved beyond simple calling functionality to
      an organically connected and scalable voice generation platform for overall service.
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2025-01-23
v1.0.1

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Supertone API Search Feature Update

Hello, thank you for using Supertone API. We’re introducing new search features that make it easier to find the voices you want.

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New Features

  1. New endpoint added for searching voices with various filters and keywords
  • Voice filtering by language, gender, age, and use case
  • Keyword search in voice names and descriptions
  • Result sorting by various criteria
  • Efficient page-based search result viewing

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API Endpoints

  1. Search Voices API: Search and filter voices that match specific conditions
  • Please visit the API reference page to learn more about search parameters and example requests.
  • For detailed information on using the Search Voices API, please refer to the updated documentation.
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2024-12-23
v1.0.0

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Supertone API Closed Beta Launch

Hello, thank you for finding Supertone API. We’re announcing the launch of the Closed Beta version of our API service that allows you to use Supertone’s voice AI technology.

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Key Features

  1. Text-to-speech voice synthesis service
  2. Voice list inquiry and usage check API provision

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API Endpoints

  1. Get Voices API: Retrieve list of available voices
  2. Text-to-speech API: Convert text to speech
  3. Get Voice Usage API: Check API usage

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Getting Started

  1. Sign up at https://console.supertoneapi.com
  2. Apply for Closed Beta participation and get approval
  3. Issue API Key from console
  4. Integrate and use API

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Pricing Information

$0.1 / 1 minute of generated audio

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Console Features

  1. API Key issuance and management
  2. Minute-based API usage monitoring For more details, please refer to the User Guide.
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