TTS-1 HD

curl https://api.therouter.ai/v1/audio/speech \
  -H "Authorization: Bearer $THEROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/tts-1-hd",
    "input": "The quick brown fox jumped over the lazy dog.",
    "voice": "nova"
  }' \
  --output speech-hd.mp3

# FLAC — lossless, recommended for archival or further audio processing
curl https://api.therouter.ai/v1/audio/speech \
  -H "Authorization: Bearer $THEROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/tts-1-hd",
    "input": "Welcome to the AI era. Your voice assistant is ready.",
    "voice": "shimmer",
    "response_format": "flac"
  }' \
  --output narration.flac