Fish Audio S2.1 Pro (free tier)

{
  "model": "fish-audio-s2-1-pro-free",
  "input": "Welcome to Kunya. This is a text-to-speech demonstration.",
  "voice": "alloy"
}

curl -X POST https://kunya.ai/api/v1/audio/speech \
  -H "Authorization: Bearer kunya_YOUR_API_KEY" \
  -H "Content-Type: application/json"
  -d '{"model":"fish-audio-s2-1-pro-free","input":"Welcome to Kunya. This is a text-to-speech demonstration.","voice":"alloy"}'