Gemini 3.8 Flash TTS

curl https://1ai.ir/v1/chat/completions \
  -H "Authorization: Bearer $ONEAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "google/gemini-3.8-flash-tts", "messages": [{"role": "user", "content": "Hello! Who are you?"}]}'