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Fish Audio · Voice model
S2 Pro
fish-audio/s2-pro- Voice
S2 Pro is a multilingual text-to-speech model from Fish Audio. It is suited for expressive narration and multi-speaker dialogue, with natural-language controls for speaking style and emotion.
Specifications
- Input
- text, up to 20,000 characters per call
- Output
- mp3 (default) or raw pcm
- Voice
- provider voice ids via `voice`; omitted = the provider's default when it has one
- Billing
- per character of input text
Use it
POST /api/v1/audio/speech · MCP speak · full reference
curl https://omnirail.org/api/v1/audio/speech \
-H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
-d '{"model":"fish-audio/s2-pro","input":"Hello from OmniRail. Every model, one key.","response_format":"mp3"}' \
--output hello.mp3