S2 Pro

fish-audio/s2-pro

A text-to-speech model, at $15.75 per million characters.

Details

Maker: fish-audio
Kind: Speech
Price: $15.75 per million characters
Capabilities: None listed
Takes: Text
Returns: Audio
Zero data retention: Not on every provider
No training on requests: Not on every provider
Released: 2026-03-09
Newer model: fish-audio/drama-3Released later by the same maker, costs no more, and lists the same capabilities. Compare the two

Description

Fish Audio S2 is the second-generation TTS model from Fish Audio. It's trained on over 10 million hours of audio across approximately 80 languages, and it introduces inline tag control: natural-language instructions embedded directly in your script at any position, giving you fine-grained direction over how speech is delivered at the word or phrase level.

Call it

curl

curl https://phantom.codes/v1/audio/speech \
  -H "Authorization: Bearer $PHANTOM_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "fish-audio/s2-pro",
    "input": "Hello from Phantom"
  }' \
  --output speech.mp3

Set PHANTOM_KEY to your key. Any OpenAI client works with the base URL https://phantom.codes/v1.

Get a key Compare with another model