TTS-1 HD

Text-to-Speech • OpenAI • Proxied

OpenAI's high-definition text-to-speech model producing higher quality audio output.

Model Info
Terms and License	link ↗
More information	link ↗

Usage

const response = await env.AI.run(
  'openai/tts-1-hd',
  {
    text: 'Hello! Welcome to Cloudflare AI Gateway. Let me show you what we can do.',
  },
  {
    gateway: { id: 'default' },
  }
)
console.log(response)

Response 200

Examples

Storytelling — HD narration with the Fable voice

const response = await env.AI.run(
  'openai/tts-1-hd',
  {
    text: 'Once upon a time, in a kingdom beyond the clouds, there lived a young inventor who dreamed of building machines that could think.',
    voice: 'fable',
    speed: 0.9,
  },
  {
    gateway: { id: 'default' },
  }
)
console.log(response)

Response 200

Podcast Style — Conversational podcast narration

const response = await env.AI.run(
  'openai/tts-1-hd',
  {
    text: "So here's the thing about large language models — they're not actually thinking. They're predicting the next token based on patterns in their training data. But the results can be surprisingly coherent.",
    voice: 'echo',
  },
  {
    gateway: { id: 'default' },
  }
)
console.log(response)

Response 200

Shimmer Voice — Bright and expressive voice

const response = await env.AI.run(
  'openai/tts-1-hd',
  {
    text: 'Breaking news: scientists have discovered a new species of deep-sea fish that produces its own light using bioluminescence.',
    voice: 'shimmer',
  },
  {
    gateway: { id: 'default' },
  }
)
console.log(response)

Response 200

text

stringrequiredmaxLength: 4096The text to generate audio for. Maximum length is 4096 characters.

voice

stringrequireddefault: alloyenum: alloy, echo, fable, onyx, nova, shimmerThe voice to use when generating the audio. Defaults to alloy.

response_format

stringrequireddefault: mp3enum: mp3, opus, wav, aac, flacThe output format for the audio. Supported formats are mp3, opus, wav, aac and flac.

speed

numberrequireddefault: 1minimum: 0.25maximum: 4The speed of the generated audio. Select a value from 0.25 to 4.0. 1.0 is the default.

audio

stringURL to the generated audio file

API Schemas

Input
Output

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "text": {
      "description": "The text to generate audio for. Maximum length is 4096 characters.",
      "type": "string",
      "maxLength": 4096
    },
    "voice": {
      "description": "The voice to use when generating the audio. Defaults to alloy.",
      "default": "alloy",
      "type": "string",
      "enum": [
        "alloy",
        "echo",
        "fable",
        "onyx",
        "nova",
        "shimmer"
      ]
    },
    "response_format": {
      "description": "The output format for the audio. Supported formats are mp3, opus, wav, aac and flac.",
      "default": "mp3",
      "type": "string",
      "enum": [
        "mp3",
        "opus",
        "wav",
        "aac",
        "flac"
      ]
    },
    "speed": {
      "description": "The speed of the generated audio. Select a value from 0.25 to 4.0. 1.0 is the default.",
      "default": 1,
      "type": "number",
      "minimum": 0.25,
      "maximum": 4
    }
  },
  "required": [
    "text",
    "voice",
    "response_format",
    "speed"
  ],
  "additionalProperties": false
}

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "audio": {
      "description": "URL to the generated audio file",
      "type": "string"
    }
  },
  "required": [
    "audio"
  ],
  "additionalProperties": false
}