🇹🇭

Supertonic 3 for Thai

Lightning-fast, on-device, multilingual TTS — 32 languages, now including Thai, running natively via ONNX.

We added Thai as the 32nd language to Supertone's Supertonic 3 — joining its 31 existing languages without degrading any of them. The samples below showcase seamless Thai ⇄ English code-switching in a single utterance, on-device via ONNX.

Created by Watthanasak Jeamwatthanachai · PhD · EMBA · C|CISO

Every clip below speaks the same mixed line

สวัสดีครับ ผมชื่อสมชาย และผมชอบเรียนภาษาไทย

“A gentle breeze moved through the open window while everyone listened to the story.”

Listen

F1 female

🇹🇭 Thai-native

🇬🇧 English-native

🌐 Neutral bilingual

M1 male

🇹🇭 Thai-native

🇬🇧 English-native

🌐 Neutral bilingual

F3 female

🇹🇭 Thai-native

🇬🇧 English-native

🌐 Neutral bilingual

Language modes

th Thai-native speaker — Thai is flawless; English carries a light Thai accent.

en English-native bilingual — English is flawless; Thai carries a light English accent.

na Neutral bilingual — cleanest “professional bilingual” delivery across both languages.

What works

32 languages — all 31 of Supertonic 3's original languages preserved, with Thai added as the 32nd.
Adding Thai degraded none of the original languages — they remain at native quality.
Thai + English in a single utterance — natural code-switching, no stitching.
Multiple voices — male and female, with voice identity preserved across languages.
On-device — runs natively via ONNX, no cloud required.
44.1 kHz output.

Languages

English, Korean, Japanese, Arabic, Bulgarian, Czech, Danish, German, Greek, Spanish, Estonian, Finnish, French, Hindi, Croatian, Hungarian, Indonesian, Italian, Lithuanian, Latvian, Dutch, Polish, Portuguese, Romanian, Russian, Slovak, Slovenian, Swedish, Turkish, Ukrainian, Vietnamese — and now Thai. (31 + 1 = 32)

Interactive demo

Coming soon — type your own Thai/English text and hear it live.