Fish Audio S2

Fish Audio S2 is an open-source text-to-speech model that provides fine-grained control over voice prosody and emotion using natural-language cues like [whisper] or [laughing nervously]. It supports over 80 languages and enables multi-speaker dialogue generation in a single pass with a production-ready streaming inference engine. Built on a dual-autoregressive architecture, it delivers high-quality, expressive AI voices suitable for various applications.