Fish Audio S2 Pro requirements, license & speed

Key facts

License

Fish Audio Research License source

Commercial use

No source

Research/non-commercial free; commercial needs a separate license from Fish Audio

Parameters

4B slow AR + 400M fast AR source

Minimum memory

Not stated by source

Runs on CPU

Unknown

Streaming

Yes source

Voice cloning

Yes source

10-30 s reference audio

Languages

zh, en, ja, ko, es, pt, ar, ru, fr, de, sv, it, tr, no, nl, cy, eu, ca, da, gl, ta, hu, fi, pl, et, hi, la, ur, th, vi, jw, bn, yo, sl, cs, sw, nn, he, ms, uk, id, kk, bg, lv, my, tl, sk, ne, fa, af, el, bo, hr, ro, sn, mi, yi, am, be, km, is, az, sd, br, sq, ps, mn, ht, ml, sr, sa, te, ka, bs, pa, lt, kn, si, hy, mr, as, gu, fo source

Released

2026-03-09 source

Hugging Face repo creation date (proxy for release date)

Gated on HF

No