Text to speech · Tiếng Việt
Vietnamese text to speech (chuyển văn bản thành giọng nói) reads Vietnamese aloud with its tones, taken from the diacritics in your text. Play it free below with no login. There is no native Vietnamese platform voice yet, so the playground uses Liz; for a Northern or Southern accent, clone a native speaker from a 10-second recording. Nhập tiếng Việt có dấu rồi nghe ngay.
Sonex xin nhắc anh chị khoản thanh toán thẻ tín dụng hai triệu năm trăm nghìn đồng sẽ đến hạn vào ngày mười lăm tháng mười một. Anh chị có thể thanh toán ngay trên app, mã OTP sẽ gửi qua SMS.
Voices
Free to play in your browser without an account, up to 220 characters at a time. To save the audio as a file, sign up free for 10,000 characters and one voice clone, no card required: the dashboard saves WAV and the API returns MP3.
Making a video? See AI voice-over for YouTube and Reels. The audio is yours to use on monetised channels.
Last verified 24 October 2026
There is no native Vietnamese platform voice yet, so the playground uses Liz, a voice recorded in another language: the Vietnamese text is read correctly, in that voice's accent. For a local accent, clone a native Vietnamese speaker from a 10-second recording and use that voice for every clip.
Sign up free, then send Vietnamese text to the API with "output_format": "mp3" and save the file, or generate clips in the dashboard and download them. Scripts longer than the playground's 220 characters work the same way.
About Vietnamese
Vietnamese is tonal, and its Latin-based script, Chữ Quốc ngữ, marks every tone with a diacritic: ma (ghost), má (mother), mà (but), mả (grave), mã (code or horse) and mạ (rice seedling) are six words. Text that has lost its accents, as in a hastily typed SMS, becomes ambiguous for any reader, human or machine. Most words are a single syllable, so the rhythm of a sentence is carried by the tones; a voice that flattens them sounds foreign at once.
Politeness in Vietnamese lives in pronouns and particles. A support agent calls herself em and the customer anh or chị, opens with dạ and ends with ạ; dropping them makes a call sound cold. Northern (Hà Nội) and Southern (Sài Gòn) Vietnamese also differ in pronunciation and some words, such as nghìn and ngàn for "thousand". Customer messages mix in English shopping words, from voucher and freeship to COD, which Pāṇini reads within the Vietnamese sentence.
Use cases
Sellers and couriers confirm cash-on-delivery orders and delivery slots before dispatch, cutting failed deliveries.
Banks and wallet apps read payment reminders, due dates and balances in clear Vietnamese.
Clinics, remittance firms and travel agencies in the United States and Australia serve Vietnamese-speaking customers.
Commercial use
The full wording is in our terms of service.
YouTube
Yes, AI voices are allowed. What YouTube limits is mass-produced, repetitive content: videos made from a template with little original work. Its July 2025 update renamed that rule from “repetitious” to “inauthentic” content (YouTube’s monetisation policies).
Write your own script, add your own research or editing, and keep one consistent voice for the channel. Where a realistic AI voice could mislead viewers, use YouTube’s altered or synthetic content label. The monetisation decision is always YouTube’s.
Voice cloning
Clone your voice from a 10-second recording. Your clone speaks Vietnamese, and every other language Pāṇini supports, in your own voice. The language comes from the text you type, so a clone recorded in English or Hindi can read a Vietnamese script.
Your accent comes with it: a clone sounds like you speaking Vietnamese, not like a different native speaker. Every free account includes one voice clone. Clone only your own voice, or a voice whose owner has agreed.
API
One request returns Vietnamese audio as MP3. The language is detected from the text, so no language setting is needed. Pāṇini TTS starts streaming audio in under 200 ms (time to first byte).
1curl https://api.sonexlabs.com/v1/speech \2 --header 'Authorization: Bearer YOUR_API_KEY' \3 --header 'Content-Type: application/json' \4 --data '{"text": "Sonex xin nhắc anh chị khoản thanh toán thẻ tín dụng hai triệu năm trăm nghìn đồng sẽ đến hạn vào ngày mười lăm tháng mười một. Anh chị có thể thanh toán ngay trên app, mã OTP sẽ gửi qua SMS.", "output_format": "mp3"}' \5 --output vietnamese.mp3FAQ
Yes. The playground on this page reads up to 220 characters of Vietnamese at a time with no account. Sign up free for 10,000 characters and one voice clone, no card; after that it costs $0.03125 per 1,000 characters.
Yes, after free sign-up. The playground on this page plays audio in your browser only, up to 220 characters at a time, so you can check the voice first. Sign up free (10,000 characters and one voice clone, no card): the dashboard saves each clip as a WAV file with Download audio, and the API returns MP3 when you set "output_format": "mp3".
Yes, when the text carries its diacritics. Send fully accented Vietnamese; text without accents is ambiguous to any reader.
The samples use a neutral delivery. If you need a specific regional accent, clone a speaker from that region from a 10-second sample.
Liz reads these samples; any Sonex Labs voice can speak Vietnamese, and you can clone a native speaker's voice from 10 seconds.
$0.03125 per 1,000 characters, the same as every language.
Yes. Audio you generate, on the free tier or with paid credits, can be used on monetised YouTube channels, Shorts, Reels and in ads, with no attribution. YouTube limits mass-produced, repetitive videos, not AI voices, so write your own script and keep your edits original. The monetisation decision is YouTube's.
The audio you generate is yours to use, including commercially, with no attribution and no royalties to Sonex Labs. You are responsible for the script itself: if you read someone else's text, you need their permission.
Yes. A Sonex voice clone is not tied to the language it was recorded in. Type a Vietnamese script and your clone reads it in your own voice, with Vietnamese pronunciation. Your natural accent carries over, so it sounds like you speaking Vietnamese.
Related tools
More languages
See text to speech in every language, the full list of 250+ languages, pricing, the Pāṇini TTS API, or transcribe Vietnamese audio with Vietnamese speech to text.
10,000 free text-to-speech characters and one free voice clone that speaks every language, no card required. Every language is billed at the same rate.