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: localai
F5-TTS v1 Base (SWivid, MIT) text-to-speech synthesized through the CrispASR backend. A 22-layer DiT flow-matching model with a built-in Vocos vocoder in a single self-contained GGUF (no separate codec). Auto-detected by CrispASR and runs end-to-end on CPU, producing 24 kHz mono audio. F5-TTS is a voice-cloning model with no built-in speaker: you must supply a reference clip and its transcript. Add `voice:` and `voice_text:` to the model's `options` (paths resolve against the model directory) before synthesizing; without a reference the model cannot generate audio. Default GGUF size ~945 MB (f16). Quantization below f16 is not recommended for flow-matching models. Synthesis runs a 32-step ODE solver and is compute-heavy on CPU (expect long generation times without a GPU-enabled CrispASR build).
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