Generate speech audio

Authorization

BearerAuth

AuthorizationBearer <token>

In: header

Request Body

application/json

TypeScript Definitions

Use the request body type in TypeScript.

model*string

The voice model to use

Value in"gpro" | "orpheus" | "xai"

input*string

The text to synthesize (max 1000 chars for gpro/grok, 500 for orpheus)

Length1 <= length <= 1000

voice*string

Voice name (see GET /api/v1/voices for available voices)

Length1 <= length

response_format?string

Audio format. Default depends on model

Value in"wav" | "mp3"

style?string

Emotion/style variant (e.g., "happy", "sad", "whisper")

seed?integer

Optional deterministic seed for providers that support it (e.g. Gemini)

Range-9007199254740991 <= value <= 9007199254740991

Response Body

`application/json`

curl -X POST "https://loading/api/v1/speech" \  -H "Content-Type: application/json" \  -d '{    "model": "gpro",    "input": "Hello, world!",    "voice": "achernar"  }'

{
  "url": "http://example.com",
  "credits_used": 0,
  "credits_remaining": 0,
  "usage": {
    "input_characters": -9007199254740991,
    "model": "string"
  }
}

{
  "error": {
    "message": "string",
    "type": "invalid_request_error",
    "param": "string",
    "code": "string"
  }
}

{
  "error": {
    "message": "string",
    "type": "invalid_request_error",
    "param": "string",
    "code": "string"
  }
}

{
  "error": {
    "message": "string",
    "type": "invalid_request_error",
    "param": "string",
    "code": "string"
  }
}

{
  "error": {
    "message": "string",
    "type": "invalid_request_error",
    "param": "string",
    "code": "string"
  }
}

{
  "error": {
    "message": "string",
    "type": "invalid_request_error",
    "param": "string",
    "code": "string"
  }
}

{
  "error": {
    "message": "string",
    "type": "invalid_request_error",
    "param": "string",
    "code": "string"
  }
}

{
  "error": {
    "message": "string",
    "type": "invalid_request_error",
    "param": "string",
    "code": "string"
  }
}

Generate speech audio

Authorization

Request Body

Response Body

200application/json

400application/json

401application/json

402application/json

404application/json

422application/json

429application/json

500application/json

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`