Repository: localaiLicense: mit

Supertonic multilingual text-to-speech (Supertone/supertonic-3), served through the native supertonic backend via ONNX Runtime. Lightning-fast on-device flow-matching TTS with 44.1 kHz output, 31 languages, and 10 preset voice styles (F1-F5, M1-M5). No espeak-ng dependency. Defaults to voice F1; override per request with the OpenAI `voice` field, and optionally pass `language=` (e.g. en, ko, ja, it; "na" for language-agnostic).
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Repository: localaiLicense: openrail
Supertonic 3 (audio.cpp, GGUF orig) - fast English text to speech with no reference clip required, served by the audio-cpp backend. Covers both the TTS and the TTSStream RPC, so /v1/audio/speech works streaming and non-streaming. The orig (F32) package is deliberate. Upstream's tested-status table in docs/gguf.md records supertonic as Pass on orig, untested on 16-bit, and "No (unsupported weight dtype)" on q8_0; the f16 package aborted the process inside ggml_concat when tested locally. The backend refuses anything but f32/i64 weights for this family, so a wrong build fails at load with a clear message rather than crashing.
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