Text-to-Speech

Generate audio from text input.

POST /v1/audio/speech

cURL

curl https://gateway.bud.studio/v1/audio/speech \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "tts-1",
    "input": "Hello, this is a test of text-to-speech.",
    "voice": "alloy"
  }' \
  --output speech.mp3

200

Binary audio file returned with appropriate Content-Type header (e.g., audio/mpeg for MP3)

cURL

curl https://gateway.bud.studio/v1/audio/speech \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "tts-1",
    "input": "Hello, this is a test of text-to-speech.",
    "voice": "alloy"
  }' \
  --output speech.mp3

200

Binary audio file returned with appropriate Content-Type header (e.g., audio/mpeg for MP3)

Headers

Parameter	Type	Required	Description
Authorization	string	Yes	Bearer authentication header

Body

Parameter	Type	Required	Description
model	string	Yes	Model identifier (e.g., tts-1, tts-1-hd)
input	string	Yes	Text to convert to speech (max 4096 characters)
voice	string	Yes	Voice to use: alloy, echo, fable, onyx, nova, shimmer, ash, ballad, coral, sage, verse
response_format	string	No	Audio format: mp3, opus, aac, flac, wav, pcm. Default: mp3
speed	float	No	Speed of generated audio (0.25 to 4.0). Default: 1.0

Supported Providers

OpenAI

TTS-1 and TTS-1-HD with multiple voices

Azure OpenAI

Enterprise text-to-speech with global deployment

Together AI

Cartesia Sonic with 100+ voice options