openai/src/resources/audio/speech.ts

The official TypeScript library for the OpenAI API

// File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.

import { APIResource } from '../../resource';
import * as Core from '../../core';
import { type Response } from '../../_shims/index';

export class Speech extends APIResource {
  /**
   * Generates audio from the input text.
   */
  create(body: SpeechCreateParams, options?: Core.RequestOptions): Core.APIPromise<Response> {
    return this._client.post('/audio/speech', {
      body,
      ...options,
      headers: { Accept: 'application/octet-stream', ...options?.headers },
      __binaryResponse: true,
    });
  }
}

export type SpeechModel = 'tts-1' | 'tts-1-hd' | 'gpt-4o-mini-tts';

export interface SpeechCreateParams {
  /**
   * The text to generate audio for. The maximum length is 4096 characters.
   */
  input: string;

  /**
   * One of the available [TTS models](https://platform.openai.com/docs/models#tts):
   * `tts-1`, `tts-1-hd` or `gpt-4o-mini-tts`.
   */
  model: (string & {}) | SpeechModel;

  /**
   * The voice to use when generating the audio. Supported voices are `alloy`, `ash`,
   * `ballad`, `coral`, `echo`, `fable`, `onyx`, `nova`, `sage`, `shimmer`, and
   * `verse`. Previews of the voices are available in the
   * [Text to speech guide](https://platform.openai.com/docs/guides/text-to-speech#voice-options).
   */
  voice:
    | (string & {})
    | 'alloy'
    | 'ash'
    | 'ballad'
    | 'coral'
    | 'echo'
    | 'fable'
    | 'onyx'
    | 'nova'
    | 'sage'
    | 'shimmer'
    | 'verse';

  /**
   * Control the voice of your generated audio with additional instructions. Does not
   * work with `tts-1` or `tts-1-hd`.
   */
  instructions?: string;

  /**
   * The format to audio in. Supported formats are `mp3`, `opus`, `aac`, `flac`,
   * `wav`, and `pcm`.
   */
  response_format?: 'mp3' | 'opus' | 'aac' | 'flac' | 'wav' | 'pcm';

  /**
   * The speed of the generated audio. Select a value from `0.25` to `4.0`. `1.0` is
   * the default.
   */
  speed?: number;
}

export declare namespace Speech {
  export { type SpeechModel as SpeechModel, type SpeechCreateParams as SpeechCreateParams };
}