Model comparison
Fish Audio S2 Pro vs GPT-5
Capability radar, value bars, and side-by-side posture.
Fish Audio S2 Pro
Not scored
value score
GPT-5
94
value score
Fish Audio S2 Pro ctx
—
GPT-5 ctx
400K
Capability radar
Value · context · multimodal · openness · speed posture
Value head-to-head
- GPT-594
Attribute tape
| Field | Fish Audio S2 Pro | GPT-5 |
|---|---|---|
| Developer | Fish Audio | OpenAI |
| Context | — | 400K |
| Modalities | Text, Code, Image, Audio | |
| Openness | — | Proprietary Model |
| Speed | — | Fast |
| Price | — | Mid-High |
| Value score | — | 94 |
| 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. | OpenAI frontier multimodal model. |