Generates audio from the input text.

The text to generate audio for. The maximum length is 4096 characters.

Control the voice of your generated audio with additional instructions. Does not work with tts-1 or tts-1-hd.

The format to audio in. Supported formats are mp3, opus, aac, flac, wav, and pcm.

The speed of the generated audio. Select a value from 0.25 to 4.0. 1.0 is the default.