TontaubeV1: an open-weight TTS for voice cloning and long-form audio
TontaubeV1 is a 2.9B-parameter, character-level TTS release built for long-form narration and low-latency streaming, with zero-shot voice cloning from as little as 5 seconds of reference audio. English and German are primary, with six more languages supported. A four-codebook design splits semantic from acoustic prediction, and audiobook, conversational, and agentic styles ship as compact BPE-encoded controls. Weights are open, with a matching vLLM adapter on GitHub.