fish-audioReleased Mar 10, 2026

Fish Audio: S2 Pro

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.

Provider endpoints0
Benchmark results1
Measured performance

Benchmark results

All leaderboards ↗
AA Provider Voice TTS Arena ↗Unversioned · provider native voices
1,116.34

Provider native voices · all categories · US + UK accents · 4 listed voices

95% CI 1,104.34–1,128.34 · n=2,567

Independent result
Access & cost

Prices across providers

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Model specifications

Developer
fish-audio
Modality
Audio
Context
Not reported
Maximum output
Not reported
Weights
Open weights
Released
Mar 10, 2026
Provider listed
Jul 29, 2026
First discovered
Oct 16, 2026

Exact identities

  • openrouterfish-audio/s2-pro
  • aa-tts794ee34e-8276-4119-9aae-eff196fee678

Sources

Updated Oct 18, 2026

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