OpenAI: GPT-4o Mini TTS

openai/gpt-4o-mini-tts-2025-12-15

4KContext Window

4KMax Output

Normal

GPT-4o Mini TTS is OpenAI's cost-efficient text-to-speech model. It converts text input into natural-sounding audio output, supporting a variety of voices and tones.

Capabilities

Audio GenerationSpeech Recognition

Technical Specs

Input Modality

Text

Output Modality

Text

Arch

—

Pricing

Pay per use, no monthly fees

Billing Type	Unit	Price
Text Input	—	$0.6000/M tokens
Characters	—	< $0.001/ 字符

Quick Start

from openai import OpenAI

client = OpenAI(
    base_url="https://api.uniontoken.ai/v1",
    api_key="YOUR_UNIONTOKEN_API_KEY",
)

response = client.chat.completions.create(
    model="openai/gpt-4o-mini-tts-2025-12-15",
    messages=[
        {"role": "user", "content": "Hello!"}
    ],
)

print(response.choices[0].message.content)