GPT-4o Mini TTS (2025-03-20)

gpt-4o-mini-tts-2025-03-20

Original release snapshot of GPT-4o Mini TTS with voice instructions support

Text to speech

Open in Studio Create an API key

Pricing

Includes our margin. Charged per request from your balance.

Per 1K characters: $0.0011

Details

Provider: OpenAI
Added: Nov 5, 2026

Options

Parameters this model accepts.

Voices (13): alloy
ash
ballad
coral
echo
fable
nova
onyx
sage
shimmer
verse
marin
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cedar
Max input: 4,096 characters

Use it from the API

Replace $HIDE_API_KEY with a key from the Developers page. Base URL https://hide.st/api/v1.

curl https://hide.st/api/v1/audio/speech \
  -H "Authorization: Bearer $HIDE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-4o-mini-tts-2025-03-20",
    "input": "Hello! This is a quick test of text to speech.",
    "voice": "alloy"
  }' \
  --output speech.mp3