{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/createSpeechRequest",
  "title": "createSpeechRequest",
  "type": "object",
  "description": "Speech request.",
  "properties": {
    "input": {
      "type": "string",
      "description": "The text to synthesize audio for. The maximum length is 4096 characters.",
      "maxLength": 4096
    },
    "voice": {
      "type": "string",
      "description": "The voice to use for speech synthesis.",
      "enum": [
        "alloy",
        "echo",
        "fable",
        "onyx",
        "nova",
        "shimmer"
      ]
    },
    "response_format": {
      "type": "string",
      "description": "The format to synthesize the audio in.",
      "enum": [
        "mp3",
        "opus",
        "aac",
        "flac"
      ]
    },
    "speed": {
      "description": "The speed of the synthesize audio. Select a value from `0.25` to `4.0`. `1.0` is the default.",
      "type": "number",
      "default": 1,
      "minimum": 0.25,
      "maximum": 4
    }
  },
  "required": [
    "input",
    "voice"
  ]
}