Chatterbox API - AI Text to Speech APIs

Chatterbox API, developers can convert text into lifelike audio with customizable voice characteristics. The API supports multiple languages and speaking styles, making it ideal for voiceovers, audiobooks, virtual assistants, and accessibility applications requiring human-quality speech output.

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Chatterbox v1 Text to Speech API Documentation

https://gateway.pixazo.ai/chatterbox-text-to-speech/v1

Authentication

All requests require an API key passed via header.

Header	Type	Required	Description
Ocp-Apim-Subscription-Key	string	Yes	Your API subscription key

Chatterbox Text to Speech generate request - Chatterbox Text to Speech API

Request Code

POST https://gateway.pixazo.ai/chatterbox-text-to-speech/v1/chatterbox-text-to-speech-request
Content-Type: application/json
Cache-Control: no-cache
Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY

{
  "text": "Hello world, this is a test of the Chatterbox text to speech model.",
  "audio_url": "https://storage.googleapis.com/chatterbox-demo-samples/prompts/male_rickmorty.mp3",
  "exaggeration": 0.25,
  "temperature": 0.7,
  "cfg": 0.5
}

import requests

url = "https://gateway.pixazo.ai/chatterbox-text-to-speech/v1/chatterbox-text-to-speech-request"
headers = {
    "Content-Type": "application/json",
    "Cache-Control": "no-cache",
    "Ocp-Apim-Subscription-Key": "YOUR_SUBSCRIPTION_KEY"
}
data = {
    "text": "Hello world, this is a test of the Chatterbox text to speech model.",
    "audio_url": "https://storage.googleapis.com/chatterbox-demo-samples/prompts/male_rickmorty.mp3",
    "exaggeration": 0.25,
    "temperature": 0.7,
    "cfg": 0.5
}

response = requests.post(url, json=data, headers=headers)
print(response.json())

const url = 'https://gateway.pixazo.ai/chatterbox-text-to-speech/v1/chatterbox-text-to-speech-request';

const data = {
  text: 'Hello world, this is a test of the Chatterbox text to speech model.',
  audio_url: 'https://storage.googleapis.com/chatterbox-demo-samples/prompts/male_rickmorty.mp3',
  exaggeration: 0.25,
  temperature: 0.7,
  cfg: 0.5
};

fetch(url, {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Cache-Control': 'no-cache',
    'Ocp-Apim-Subscription-Key': 'YOUR_SUBSCRIPTION_KEY'
  },
  body: JSON.stringify(data)
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));

curl -X POST "https://gateway.pixazo.ai/chatterbox-text-to-speech/v1/chatterbox-text-to-speech-request" \
  -H "Content-Type: application/json" \
  -H "Cache-Control: no-cache" \
  -H "Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY" \
  --data-raw '{
    "text": "Hello world, this is a test of the Chatterbox text to speech model.",
    "audio_url": "https://storage.googleapis.com/chatterbox-demo-samples/prompts/male_rickmorty.mp3",
    "exaggeration": 0.25,
    "temperature": 0.7,
    "cfg": 0.5
  }'

Output

{
  "request_id": "chatterbox-text-to-speech_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/chatterbox-text-to-speech_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Try Now

Webhook (Optional)

Add the X-Webhook-URL header to your generate request to receive a POST callback instead of polling.

X-Webhook-URL: https://your-server.com/webhook/callback

Request Parameters - Chatterbox Text to Speech generate request

Parameter	Required	Type	Description
text	Yes	string	The textual content to convert into speech. Must be a valid string of readable language.
audio_url	No	string	A URL pointing to an audio file (e.g., MP3) to serve as a voice reference. Used to clone or adapt the speaking style.
exaggeration	No	number	Controls the degree of expressive emphasis in the generated speech. Higher values increase modulation (e.g., intonation, stress). Range: 0.0 to 1.0.
temperature	No	number	Controls randomness in voice generation. Higher values increase variability in pitch and timing; lower values produce more consistent, predictable speech. Range: 0.1 to 1.0.
cfg	No	number	Classifier-Free Guidance strength. Influences how closely the output adheres to the input prompt and reference audio. Higher values increase fidelity. Range: 0.0 to 2.0.

Example Request

{
  "text": "Hello world, this is a test of the Chatterbox text to speech model.",
  "audio_url": "https://storage.googleapis.com/chatterbox-demo-samples/prompts/male_rickmorty.mp3",
  "exaggeration": 0.25,
  "temperature": 0.7,
  "cfg": 0.5
}

Response

{
  "request_id": "chatterbox-text-to-speech_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/chatterbox-text-to-speech_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Request Headers

Header	Value
Content-Type	application/json
Cache-Control	no-cache
Ocp-Apim-Subscription-Key	YOUR_SUBSCRIPTION_KEY

Response Handling

Common status codes.

Code	Meaning
202	Accepted — Request queued
400	Bad Request
401	Unauthorized
402	Insufficient Balance
403	Forbidden
429	Too Many Requests
500	Internal Server Error

Error Responses

Queue system errors and model validation errors.

Queue System Errors

// 402 — Insufficient balance
{
  "error": "Insufficient Balance",
  "message": "Your wallet does not have enough balance. Required: $0.01"
}

// 400 — Model not found
{
  "error": "Model not found",
  "message": "Model 'chatterbox-text-to-speech' not found or is disabled"
}

Error via Status/Webhook

{
  "request_id": "chatterbox-text-to-speech_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "chatterbox-text-to-speech",
  "error": "Description of the error",
  "output": null
}

Retrieving Results

Poll the universal status endpoint to check progress and retrieve results.

Endpoint

GET https://gateway.pixazo.ai/v2/requests/status/{request_id}
Ocp-Apim-Subscription-Key: YOUR_API_KEY

cURL Example

curl -H "Ocp-Apim-Subscription-Key: YOUR_API_KEY" \
  "https://gateway.pixazo.ai/v2/requests/status/chatterbox-text-to-speech_019d42ce-bc92-7f98-8181-b42db433b9f2e"

Response (Completed)

{
  "request_id": "chatterbox-text-to-speech_019d42ce-bc92-7f98-8181-b42db433b9f2e",
  "status": "COMPLETED",
  "model_id": "chatterbox-text-to-speech",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/chatterbox-text-to-speech_019d42ce-bc92-7f98-8181-b42db433b9f2e/output.wav"
    ],
    "media_type": "audio/wav"
  },
  "created_at": "2026-03-31T07:32:03.749Z",
  "updated_at": "2026-03-31T07:32:20.000Z",
  "completed_at": "2026-03-31T07:32:20.000Z"
}

Response Fields

Field	Type	Description
request_id	string	Unique request identifier
status	string	QUEUED, PROCESSING, COMPLETED, FAILED, or ERROR
model_id	string	Model that processed the request
error	string\|null	Error message if failed
output.media_url	array	URLs to generated media (R2 CDN)
output.media_type	string	MIME type (audio/wav)
created_at	string	When request was created
completed_at	string\|null	When request completed
polling_url	string	Status URL (initial response only)

Status Values

Status	Description
QUEUED	Request accepted, waiting to be processed
PROCESSING	Being processed by the model
COMPLETED	Done — output contains the result
FAILED	Failed — check error field
ERROR	System error — not charged

Status Flow

QUEUED → PROCESSING → COMPLETED
                    → FAILED
                    → ERROR

Typical Workflow

Send a generate request to the API endpoint
Save the request_id from the response
Poll every 5-10 seconds: GET /v2/requests/status/{request_id}
When status is "COMPLETED", download from output.media_url

Tip: Use X-Webhook-URL header to get a callback instead of polling.

Chatterbox v1 Text to Speech API Pricing

Resolution	Price (USD)
All Resolution	$0.03