Fish Audio Secures $52M Seed Round, Launches S2.1 Pro Voice Model

Fish Audio raises $52M seed capital and debuts S2.1 Pro, a voice model offering 2x speed and 1/6th cost of rivals, with a 50% cost-reduction guarantee for enterprise clients.

Woofun AI reports that Fish Audio has closed a $52 million seed financing round while simultaneously releasing its next-generation speech synthesis model, S2.1 Pro. The company declined to name the specific investors participating in this funding event.

S2.1 Pro enables voice cloning from just five seconds of audio, operating at twice the speed of Cartesia and at one-sixth the cost of ElevenLabs. The model allows granular control over word-level emotions, intonation, and speech rate. Major AI firms including HeyGen, LiveKit, Retell, Sanas, and OpenArt have already integrated the technology into production environments. Fish Audio guarantees a 50% cost reduction for enterprise users or provides one year of free service. To mark its first anniversary, the company is offering a one-month free trial of S2.1 Pro.