ElevenLabs TTS Turbo v2.5

curl --request POST \
  --url https://api.poyo.ai/api/generate/submit \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "elevenlabs-tts-turbo-2-5",
  "callback_url": "https://your-domain.com/callback",
  "input": {
    "voice": "Rachel",
    "speed": 1.08,
    "stability": 0.55,
    "similarity_boost": 0.78,
    "style": 0.12,
    "timestamps": false,
    "apply_text_normalization": "auto",
    "text": "Welcome to NovaDesk. Your workspace is ready, your calendar is synced, and your first customer briefing starts in ten minutes."
  }
}
'

{
  "code": 200,
  "data": {
    "task_id": "task-unified-1757165031-uyujaw3d",
    "status": "not_started",
    "created_time": "2026-06-25T10:30:00"
  }
}

{
  "code": 200,
  "error": {
    "message": "<string>",
    "type": "<string>"
  }
}

{
  "code": 200,
  "error": {
    "message": "<string>",
    "type": "<string>"
  }
}

POST

api

generate

submit

curl --request POST \
  --url https://api.poyo.ai/api/generate/submit \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "elevenlabs-tts-turbo-2-5",
  "callback_url": "https://your-domain.com/callback",
  "input": {
    "voice": "Rachel",
    "speed": 1.08,
    "stability": 0.55,
    "similarity_boost": 0.78,
    "style": 0.12,
    "timestamps": false,
    "apply_text_normalization": "auto",
    "text": "Welcome to NovaDesk. Your workspace is ready, your calendar is synced, and your first customer briefing starts in ten minutes."
  }
}
'

{
  "code": 200,
  "data": {
    "task_id": "task-unified-1757165031-uyujaw3d",
    "status": "not_started",
    "created_time": "2026-06-25T10:30:00"
  }
}

{
  "code": 200,
  "error": {
    "message": "<string>",
    "type": "<string>"
  }
}

{
  "code": 200,
  "error": {
    "message": "<string>",
    "type": "<string>"
  }
}

After submission, a task_id will be returned. If you provided a callback_url, when the task status becomes finished or failed, a POST request will be sent to the callback_url.
Regardless of whether callback_url is provided, you can retrieve the result through the unified Query Task Status endpoint.

elevenlabs-tts-turbo-2-5 converts text inputs into low-latency multilingual speech audio. Results are returned as task files, matching the standard image, video, 3D, and audio task response structure.

Models

elevenlabs-tts-turbo-2-5 - ElevenLabs TTS Turbo v2.5 text-to-speech generation

Required parameters

text: Text to convert to speech
- Length: 1-40000 characters
- Use previous_text and next_text when splitting long-form narration into multiple requests

Optional parameters

voice: Voice name or compatible voice ID for speech generation. Default: Rachel
stability: Voice stability from 0 to 1. Default: 0.5
similarity_boost: Voice similarity boost from 0 to 1. Default: 0.75
style: Style exaggeration from 0 to 1. Default: 0
speed: Speech speed from 0.7 to 1.2. Default: 1
timestamps: Boolean. When true, timestamp data may be returned with the generated audio
previous_text: Optional context that came before text, useful for long-form continuity
next_text: Optional context that comes after text, useful for long-form continuity
language_code: Optional ISO 639-1 code used to enforce a target language, such as en, fr, de, ja, vi, hu, or no
apply_text_normalization: auto, on, or off. Default: auto

Examples

Low-latency product voiceover

{
  "model": "elevenlabs-tts-turbo-2-5",
  "callback_url": "https://your-domain.com/callback",
  "input": {
    "text": "Welcome to NovaDesk. Your workspace is ready, your calendar is synced, and your first customer briefing starts in ten minutes.",
    "voice": "Rachel",
    "speed": 1.08,
    "stability": 0.55,
    "similarity_boost": 0.78,
    "style": 0.12,
    "timestamps": false,
    "apply_text_normalization": "auto"
  }
}

Localized pickup notification

{
  "model": "elevenlabs-tts-turbo-2-5",
  "callback_url": "https://your-domain.com/callback",
  "input": {
    "text": "Bonjour, votre commande est prete. Merci de presenter votre code de retrait a l'accueil.",
    "voice": "Aria",
    "language_code": "fr",
    "stability": 0.6,
    "similarity_boost": 0.75,
    "speed": 1,
    "timestamps": true,
    "apply_text_normalization": "auto"
  }
}

Long-form continuity

{
  "model": "elevenlabs-tts-turbo-2-5",
  "callback_url": "https://your-domain.com/callback",
  "input": {
    "previous_text": "The city lights faded behind the train.",
    "text": "Mira lowered her voice and said, keep the map close. By sunrise, everyone will be looking for it.",
    "next_text": "The carriage fell silent as the tunnel opened ahead.",
    "voice": "Sarah",
    "stability": 0.42,
    "similarity_boost": 0.82,
    "style": 0.35,
    "speed": 0.94,
    "apply_text_normalization": "auto"
  }
}

Expressive host intro

{
  "model": "elevenlabs-tts-turbo-2-5",
  "callback_url": "https://your-domain.com/callback",
  "input": {
    "text": "Tonight, the gallery opens with a quiet piano note, then the host welcomes every guest with calm confidence.",
    "voice": "Laura",
    "stability": 0.48,
    "similarity_boost": 0.8,
    "style": 0.4,
    "speed": 0.98,
    "apply_text_normalization": "auto"
  }
}

Notes

PoYo’s public parameter name is text.
Query status through the standard task status API.
Successful responses return files, where the generated speech uses file_type: audio.

Authorizations

Authorization

string

header

required

All API endpoints require Bearer Token authentication.

Create an API key: sign in to PoYo, open Dashboard → API Key at poyo.ai/dashboard/api-key, and click to create a key.

Add it to the request header:

Authorization: Bearer YOUR_API_KEY

Body

application/json

model

enum<string>

required

Model identifier.

Available options:

elevenlabs-tts-turbo-2-5

Example:

"elevenlabs-tts-turbo-2-5"

input

object

required

Show child attributes

callback_url

string<uri>

Webhook callback URL for result notifications

Example:

"https://your-domain.com/callback"

Response

Task submitted successfully

code

enum<integer>

required

Business status code. 200 means success; any other value means the request failed. Always check this field: some validation errors return HTTP 200 with code: 400 in the body.

200: Success
400: Invalid request parameters
401: Missing or invalid API key
402: Insufficient credits
403: Permission denied
404: Resource not found
408: Request timeout
429: Rate limit exceeded
500: Internal server error
502: Upstream service error
503: Service unavailable

See Error Codes for details.

Available options:

200,

400,

401,

402,

403,

404,

408,

429,

500,

502,

503

Example:

200

data

object

required

Show child attributes

​Models

​Required parameters

​Optional parameters

​Examples

​Low-latency product voiceover

​Localized pickup notification

​Long-form continuity

​Expressive host intro

​Notes

Authorizations

Body

Response

Models

Required parameters

Optional parameters

Examples

Low-latency product voiceover

Localized pickup notification

Long-form continuity

Expressive host intro

Notes