GPT-4o Mini TTS

curl https://api.therouter.ai/v1/audio/speech \
  -H "Authorization: Bearer $THEROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-4o-mini-tts",
    "input": "Welcome to TheRouter — your unified API for all AI models.",
    "voice": "nova",
    "instructions": "Speak warmly and professionally, like a friendly customer service agent.",
    "response_format": "mp3"
  }' \
  --output speech.mp3

curl https://api.therouter.ai/v1/audio/speech \
  -H "Authorization: Bearer $THEROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-4o-mini-tts",
    "input": "This is a streaming voice demo using TheRouter API.",
    "voice": "echo",
    "response_format": "pcm"
  }' \
  --output - | ffplay -f s16le -ar 24000 -ac 1 -