Documentation Index Fetch the complete documentation index at: https://docs.supertoneapi.com/llms.txt
Use this file to discover all available pages before exploring further.
Model Summary Model Positioning Languages Voice Settings Extra Features Sona Speech 1 Legacy flagship 3 Advanced Phonemes with Timestamp, Streaming Sona Speech 2 Latest flagship 23 Advanced Phonemes with Timestamp, Normalized Text Sona Speech 2 Flash Lightweight / low-latency 23 Core Phonemes with Timestamp, Normalized Text Supertonic API 1 Ultra-lightweight 5 Minimal –
Supported Languages Model Languages Sona Speech 1 en, ko, ja Sona Speech 2 en, ko, ja, bg, cs, da, el, es, et, fi, hu, it, nl, pl, pt, ro, ar, de, fr, hi, id, ru, vi Sona Speech 2 Flash en, ko, ja, bg, cs, da, el, es, et, fi, hu, it, nl, pl, pt, ro, ar, de, fr, hi, id, ru, vi Supertonic API 1 en, ko, ja, es, pt
Supported Voice Settings Model Voice Settings Sona Speech 1 pitch_shift, pitch_variance, speed, duration, similarity, text_guidanceSona Speech 2 pitch_shift, pitch_variance, speed, duration, similarity, text_guidance, subharmonic_amplitude_controlSona Speech 2 Flash pitch_shift, pitch_variance, speed, durationSupertonic API 1 speed
Additional Features Model Supported Features Sona Speech 1 include_phonemes, streamingSona Speech 2 include_phonemes, normalized_textSona Speech 2 Flash include_phonemes, normalized_textSupertonic API 1 –
Quick Selection Guide If you need… Recommended Model Legacy compatibility or streaming output Sona Speech 1 Best overall speech quality Sona Speech 2 Low-latency & lightweight inference Sona Speech 2 Flash Minimal configuration & fastest setup Supertonic API 1
Text-to-Speech Guide Detailed usage, parameters, and audio output formats.
API Reference Complete API specification and request examples.
