AI Models

Audixa accepts base and advanced as the TTS model. Model selection changes the compatible voice set, language-code scheme, controls, and plan rate. It does not override the requirement that voice_id must match the selected model.

Base Model

Base requests support:

Base-compatible system voices returned by GET /v3/voices?model=base.
speed from 0.5 to 2.0.
Single-letter language_code values.
wav or mp3 output.

{
  "text": "This Base request demonstrates the documented delivery controls.",
  "voice_id": "am_ethan",
  "model": "base",
  "speed": 1.1,
  "language_code": "a",
  "audio_format": "mp3"
}

Advanced Model

Advanced requests support:

Advanced-compatible system and account-owned custom voices.
cfg_weight from 1.0 to 5.0.
exaggeration from 0.0 to 1.0.
Advanced model language codes such as en, de, or ja.
wav or mp3 output.

{
  "text": "This Advanced request demonstrates its two guidance controls.",
  "voice_id": "YOUR_ADVANCED_VOICE_ID",
  "model": "advanced",
  "cfg_weight": 3.5,
  "exaggeration": 0.7,
  "language_code": "en",
  "audio_format": "mp3"
}

Side-by-Side Contract

Capability	Base	Advanced
Request value	`model: "base"`	`model: "advanced"`
Delivery controls	`speed`	`cfg_weight`, `exaggeration`
Language codes	Single-letter scheme	Model-supported ISO-style codes
Audio formats	`wav`, `mp3`	`wav`, `mp3`
Compatible voices	Base voices	Advanced and compatible custom voices
Rate and text limit	Set by current plan	Set by current plan

Choose a Model

List voices for the intended model.
Select a returned voice_id.
Use only controls accepted for that model.
Review the current rate and limits in Billing or on Pricing.

A Base voice cannot be used with model: "advanced", and an Advanced voice cannot be used with model: "base". The API rejects mismatched requests.

Getting Started

API Guides

Language Examples

Dashboard

Base Model

Advanced Model

Side-by-Side Contract

Choose a Model

​Base Model

​Advanced Model

​Side-by-Side Contract

​Choose a Model

Base Model

Advanced Model

Side-by-Side Contract

Choose a Model