Audio8 TTS Realistic 0.6B synthesizes new speech from reference audio and an accurate transcript. It lists 23 supported languages, including Korean, plus additional preview languages; its code and this model are Apache 2.0 licensed. It requires Python 3.10 or later and a CUDA environment, while ONNX execution is not supported for Realistic. The repository distinguishes language quality and evaluation coverage rather than claiming equal validation everywhere. The release is a candidate for local speech workflows, but results for separate Preview models are not interchangeable or independent validation.