s2-pro
Fish Audio S2 Pro is a leading text-to-speech (TTS) model with fine-grained inline control of prosody and emotion. Trained on over 10M+ hours of audio data across 80+ languages, the system combines reinforcement learning alignment with a dual-autoregressive architecture. The release includes model weights, fine-tuning code, and an SGLang-based streaming inference engine.
Params
4.6 B
Context
—
Downloads 30d
368 K
Likes
1,196
Download history
tracking started — chart appears after 7 days of snapshots (1 recorded)368 K downloads in the last 30 days
Can you run it?
Estimated VRAM at 8K context unless noted. Pick your hardware to see the verdict per quantization.
| File | Quant | Size | Est. VRAM | Verdict on RTX 4090 · 24 GB |
|---|---|---|---|---|
| model.safetensors | bf16 | 9.1 GB | 11.2 GB | ✅ Runs comfortably |
Estimate: file size × 1.1 + KV cache at 8K + 0.5 GB overhead. Not a benchmark — how we calculate this.
Specifications
- Parameters
- 4.6 B
- Tensor type
- BF16
- Licence
- other
- First seen on the Hub
- 2026-03-09
- Training datasets
- undisclosed
- Added to our catalog
- 2026-08-06
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