Fish Audio, an AI text-to-speech startup, has raised $50 million in a seed funding round. The company has over 8 million users and generates $21 million in annual recurring revenue. Its Fish-Speech and S2 model families support more than 80 languages, with a word error rate of 0.54% in Chinese and 0.99% in English. The company’s valuation reached $500 million following a $30 million venture round in 2025. Fish Audio offers both open-source models and a hosted API for voice synthesis.
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