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GPT-4o Mini TTS (2025-12-15)

OpenAI model available through the Celeste SDK. Explore its supported operations and parameters.

See the code
Model IDgpt-4o-mini-tts-2025-12-15

What it can do.

celeste.audio.speakTurn text into speech

Parameters.

Supported controls from Celeste’s model registry. Values and availability differ between models.

GPT-4o Mini TTS (2025-12-15) parameters and constraints
ParameterAccepted values
output_format
audio/mpegaudio/oggaudio/aacaudio/flacaudio/wavaudio/pcm
speed0.25 – 4
voiceVoice ID

Start with a few lines

Put it to work.

Use your provider credentials. Call the model through the SDK and build around its output.

Speak
import celeste
response = await celeste.audio.speak(
    model="gpt-4o-mini-tts-2025-12-15",
    text="Some ideas start with a sentence."
)
audio = response.content

This example uses audio.speak. Explore the quickstart for installation and authentication.