olivier/supertonic-3-mlx
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v0.1.0 — initial release

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MLX-native port of Supertone's Supertonic 3 multilingual TTS. Runs the
full flow-matching + classifier-free-guidance pipeline at ~x100 realtime
on Apple Silicon, with audio cosine 1.0 vs the cached MLX path and
cosine 0.98 vs the upstream ONNX Runtime reference.

Weights are hosted at https://huggingface.co/ambassadia/supertonic-3-mlx
and auto-downloaded on first use; this repository ships the port code,
the model card, audio samples, and a zero-config setup_and_test.sh.

Install:
    pip install git+https://gitea.tavportal.com/olivier/supertonic-3-mlx.git

Quick test:
    git clone https://gitea.tavportal.com/olivier/supertonic-3-mlx.git
    cd supertonic-3-mlx && ./setup_and_test.sh

Licenses (dual): model weights = BigScience Open RAIL-M (Section 4
propagation), port code = Apache-2.0. See LICENSE, LICENSE-CODE, NOTICE.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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2026-05-20 09:17:05 +02:00
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filename,language,voice,text,duration_s,mlx_ms_median,rtf_mlx,onnx_ms_median,rtf_onnx,speedup_mlx_over_onnx
samples/en_F1_short.wav,en,F1,Hello world from Apple Silicon. Supertonic 3 runs at one hundred times real time.,2.786,36.6,76.2,1004.7,2.8,27.5
samples/en_M1_long.wav,en,M1,"A gentle breeze moved through the open window while the children, still half-asleep, listened to the distant sound of the harbour bells.",3.901,38.4,101.7,1356.0,2.9,35.3
samples/fr_F2.wav,fr,F2,"Bonjour, ceci est un test de synthèse vocale en français. Le modèle gère trente-et-une langues sur une puce M4.",3.413,37.9,90.1,1195.6,2.9,31.6
samples/de_M2.wav,de,M2,"Guten Morgen. Dieses Modell läuft komplett auf Apple Silicon, ohne ONNX und ohne CoreML, in reinem MLX.",3.692,38.1,96.9,1313.9,2.8,34.5
samples/ja_F3.wav,ja,F3,こんにちは。これはアップルシリコン上でMLXを使ったテストです。,1.463,32.1,45.6,848.4,1.7,26.4
samples/es_M3.wav,es,M3,"Hola, esto es una prueba de síntesis de voz en español ejecutada en tiempo real sobre Apple Silicon.",2.856,37.0,77.2,1002.1,2.9,27.1
1 filename language voice text duration_s mlx_ms_median rtf_mlx onnx_ms_median rtf_onnx speedup_mlx_over_onnx
2 samples/en_F1_short.wav en F1 Hello world from Apple Silicon. Supertonic 3 runs at one hundred times real time. 2.786 36.6 76.2 1004.7 2.8 27.5
3 samples/en_M1_long.wav en M1 A gentle breeze moved through the open window while the children, still half-asleep, listened to the distant sound of the harbour bells. 3.901 38.4 101.7 1356.0 2.9 35.3
4 samples/fr_F2.wav fr F2 Bonjour, ceci est un test de synthèse vocale en français. Le modèle gère trente-et-une langues sur une puce M4. 3.413 37.9 90.1 1195.6 2.9 31.6
5 samples/de_M2.wav de M2 Guten Morgen. Dieses Modell läuft komplett auf Apple Silicon, ohne ONNX und ohne CoreML, in reinem MLX. 3.692 38.1 96.9 1313.9 2.8 34.5
6 samples/ja_F3.wav ja F3 こんにちは。これはアップルシリコン上でMLXを使ったテストです。 1.463 32.1 45.6 848.4 1.7 26.4
7 samples/es_M3.wav es M3 Hola, esto es una prueba de síntesis de voz en español ejecutada en tiempo real sobre Apple Silicon. 2.856 37.0 77.2 1002.1 2.9 27.1