Model comparison
Fish Audio S2 Pro vs Claude 4 Sonnet
Capability radar, value bars, and side-by-side posture.
Fish Audio S2 Pro
Not scored
value score
Claude 4 Sonnet
91
value score
Fish Audio S2 Pro ctx
—
Claude 4 Sonnet ctx
200K
Capability radar
Value · context · multimodal · openness · speed posture
Value head-to-head
- Claude 4 Sonnet91
Attribute tape
| Field | Fish Audio S2 Pro | Claude 4 Sonnet |
|---|---|---|
| Developer | Fish Audio | Anthropic |
| Context | — | 200K |
| Modalities | Text, Code, Image | |
| Openness | — | Proprietary Model |
| Speed | — | Fast |
| Price | — | $3/1M in · $15/1M out |
| Value score | — | 91 |
| Summary | Fish Audio S2 Pro is an open-source text-to-speech model supporting 80+ languages with natural-language prosody and emotion control via bracketed style cues. It features a dual-path architecture (4B Slow AR + 400M Fast AR) enabling multi-speaker dialogue, voice cloning, and streaming inference with ~100 ms time-to-first-audio latency. | Balanced Claude model for coding and agents. |