ElevenLabs v3 API, ElevenLabs v1 API - AI Voice & Music Generation APIs

by ElevenLabs

ElevenLabs v3 API, developers can generate lifelike speech in multiple languages, clone voices from short audio samples, and create original music tracks. The API powers applications ranging from audiobook narration and podcast production to real-time voice assistants and multilingual content localization with human-quality audio output.

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ElevenLabs v3 Text to Speech API Documentation

https://gateway.pixazo.ai/eleven-v3-alpha-954/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

Eleven v3 Alpha generate request - Eleven v3 Alpha

Request Code

POST https://gateway.pixazo.ai/eleven-v3-alpha-954/v1/eleven-v3-alpha-request
Content-Type: application/json
Cache-Control: no-cache
Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY

{
  "text": "Hello! This is a test of the text to speech system, powered by ElevenLabs. How does it sound?",
  "voice": "Aria",
  "stability": 0.5,
  "similarity_boost": 0.75,
  "speed": 1
}

import requests

url = "https://gateway.pixazo.ai/eleven-v3-alpha-954/v1/eleven-v3-alpha-request"
headers = {
    "Content-Type": "application/json",
    "Cache-Control": "no-cache",
    "Ocp-Apim-Subscription-Key": "YOUR_SUBSCRIPTION_KEY"
}
data = {
    "text": "Hello! This is a test of the text to speech system, powered by ElevenLabs. How does it sound?",
    "voice": "Aria",
    "stability": 0.5,
    "similarity_boost": 0.75,
    "speed": 1
}

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

const url = 'https://gateway.pixazo.ai/eleven-v3-alpha-954/v1/eleven-v3-alpha-request';

const data = {
  text: 'Hello! This is a test of the text to speech system, powered by ElevenLabs. How does it sound?',
  voice: 'Aria',
  stability: 0.5,
  similarity_boost: 0.75,
  speed: 1
};

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/eleven-v3-alpha-954/v1/eleven-v3-alpha-request" \
  -H "Content-Type: application/json" \
  -H "Cache-Control: no-cache" \
  -H "Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY" \
  --data-raw '{
    "text": "Hello! This is a test of the text to speech system, powered by ElevenLabs. How does it sound?",
    "voice": "Aria",
    "stability": 0.5,
    "similarity_boost": 0.75,
    "speed": 1
  }'

Output

{
  "request_id": "eleven-v3-alpha-954_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/eleven-v3-alpha-954_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Try Now

Webhook (Optional)

Add the X-Webhook-URL header to your submit request to receive a POST callback when the job completes — no polling required.

Webhook Headers

Header	Required	Default	Description
`X-Webhook-URL`	Yes (to enable)	—	HTTPS endpoint on your server that will receive the `POST` callback. Must respond `2xx` within a few seconds (process async if needed).
`X-Webhook-Mode`	No	`terminal`	`terminal` — fires once at the final status (`COMPLETED`/`FAILED`/`ERROR`). `sync` — fires on every poll cycle plus the terminal event, and caps the queue’s polling delay at 15s for tighter progress updates.

Example: enable webhook

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

Callback Payload

Your endpoint receives a POST application/json with the same shape as the GET /v2/requests/status/{request_id} response. Example terminal callback (mode terminal):

{
  "request_id": "eleven-v3-alpha-954_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "COMPLETED",
  "model_id": "eleven-v3-alpha-954",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/eleven-v3-alpha-954_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/output.wav"
    ],
    "media_type": "audio/wav"
  },
  "created_at": "2026-05-22T13:17:32.110Z",
  "updated_at": "2026-05-22 13:19:23",
  "completed_at": "2026-05-22 13:19:23"
}

Failure callback shape

{
  "request_id": "eleven-v3-alpha-954_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "eleven-v3-alpha-954",
  "error": "Description of the error",
  "output": null,
  "created_at": "...",
  "updated_at": "...",
  "completed_at": "..."
}

Delivery semantics

terminal mode (default) — exactly one POST when the request reaches a terminal status. No callback during PROCESSING.
sync mode — POST on every status poll (with delay capped at ~15s) plus a final POST at terminal status. Use when you want progress updates.
Idempotency — use request_id as your idempotency key. Network retries can deliver the same callback more than once; your handler must tolerate duplicates.
Response — respond 200 OK within a few seconds. The queue does not block on slow handlers, but persistent failures may stop further deliveries.
HTTPS required — plain http:// URLs are rejected.

Request Parameters - Eleven v3 Alpha generate request

Parameter	Required	Type	Default	Allowed values / range	Description
text	Yes	string	—	—	The input text to be converted into speech. Must be non-empty and within the model's length limits.
voice	Yes	string	—	—	Name of the ElevenLabs voice preset to use for synthesis. Valid values include: "Aria", "Domi", "Bella", "Rachel", "Antoni", etc.
stability	Optional	number	—	0.0–1.0.	Controls the voice's stability and consistency. Lower values increase variability; higher values produce more consistent, robotic tones. Range: 0.0–1.0.
similarity_boost	Optional	number	—	0.0–1.0.	Enhances the voice’s similarity to the original training sample. Higher values yield more natural voice characteristics; lower values improve clarity and flexibility. Range: 0.0–1.0.
speed	Optional	number	—	0.5–2.0.	Adjusts the playback speed of the generated audio. Values less than 1.0 slow down speech; values greater than 1.0 speed it up. Recommended range: 0.5–2.0.

Example Request

{
  "text": "Hello! This is a test of the text to speech system, powered by ElevenLabs. How does it sound?",
  "voice": "Aria",
  "stability": 0.5,
  "similarity_boost": 0.75,
  "speed": 1
}

Response

{
  "request_id": "eleven-v3-alpha-954_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/eleven-v3-alpha-954_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."
}

// 400 — Model not found
{
  "error": "Model not found",
  "message": "Model 'eleven-v3-alpha-954' not found or is disabled"
}

Error via Status/Webhook

{
  "request_id": "eleven-v3-alpha-954_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "eleven-v3-alpha-954",
  "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/eleven-v3-alpha-954_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"

Response (Completed)

{
  "request_id": "eleven-v3-alpha-954_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "COMPLETED",
  "model_id": "eleven-v3-alpha-954",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/eleven-v3-alpha-954_019dxxxx-xxxx/output.ext"
    ],
    "media_type": "application/octet-stream"
  },
  "created_at": "2026-03-31T10:00:00.000Z",
  "updated_at": "2026-03-31T10:00:15.000Z",
  "completed_at": "2026-03-31T10:00:15.000Z"
}

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 of the output
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.

ElevenLabs v3 Text to Speech API Pricing

Resolution	Price (USD)
Your request will cost $0.1 per 1000 character.	$0.1

2. ElevenLabs v1

ElevenLabs v1 Text to Music API Documentation

https://gateway.pixazo.ai/elevenlabs-music-api-368/v1