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Audexum

Vietnamese Text to SpeechTiếng Việt

Generate natural-sounding Vietnamese audio via REST API. 10 voices, Latin script, 2,000 free credits + 250/day, no credit card.

Sample, Vietnamese (vi-VN)

Chào mừng đến với Audexum: tổng hợp giọng nói cho nhà phát triển và người sáng tạo nội dung.

Try this in the playground

Why Audexum for Vietnamese

  • Full tonal Vietnamese: all 6 tones (ngang, huyền, sắc, hỏi, ngã, nặng) rendered correctly
  • Vietnamese Latin diacritics rendered correctly, a complex orthography many models fail
  • Vietnam's fast-growing tech sector needs affordable Vietnamese TTS
  • One of the few commercial APIs with production-grade Vietnamese synthesis at developer pricing
Competitor coverage

Google Cloud TTS supports Vietnamese at $16/1M. ElevenLabs does not specifically list Vietnamese. Audexum is €24.17/1M on the Pro plan with all 6 tones rendered and a free tier.

Vietnamese e-commerce and ed-tech

Vietnam's rapidly growing e-commerce sector (Tiki, Shopee VN, Lazada VN) and ed-tech market need affordable Vietnamese TTS for product notifications, accessibility, and learning apps.

Audexum integrates as a single REST endpoint, no SDK required. Send your Vietnamese text, receive WAV audio. The free tier (2,000 free credits + 250/day) covers prototyping; paid plans start at €12/month.

First Vietnamese audio in 60 seconds.

The Vietnamese language code is vi. Pass it as the lang parameter.

All 10 voices (M1 to M5, F1 to F5) support Vietnamese. Full API reference: audexum.com/docs.

cURL
curl -X POST https://audexum.com/api/synthesize \
  -H "Authorization: Bearer $AUDEXUM_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "text": "Chào mừng đến với Audexum.",
    "voice": "F1",
    "lang": "vi"
  }' \
  --output output.wav
Python
import requests

response = requests.post(
    "https://audexum.com/api/synthesize",
    headers={
        "Authorization": f"Bearer {AUDEXUM_KEY}",
        "Content-Type": "application/json",
    },
    json={
        "text": "Chào mừng đến với Audexum.",
        "voice": "F1",
        "lang": "vi",
    },
)
response.raise_for_status()

with open("output.wav", "wb") as f:
    f.write(response.content)

Vietnamese costs the same as English.

No language surcharge. Vietnamese is included on every plan at the same rate as any other language. Pack credits never expire, and dictation uses the same balance.

Full pricing details
Free
€0
2,000 + 250/day
Creator
€12/mo
480,000 / mo
Pro
€29/mo
1,200,000 / mo
Scale
€49/mo
4,000,000 / mo
Business
€149/mo
15,000,000 / mo
Credit packs
€7
250,000, never expire

Vietnamese TTS questions

Does Audexum correctly render all 6 Vietnamese tones?

Yes. Vietnamese has 6 lexical tones (ngang/flat, huyền/falling, sắc/rising, hỏi/dipping, ngã/creaky-rising, nặng/falling-constricted). All 6 are rendered correctly. Incorrect tones change word meaning entirely in Vietnamese.

Is Vietnamese on the free tier?

Yes. Vietnamese is available on the free plan (2,000 credits + 250 a day), no credit card required.

Which TTS services support Vietnamese?

Google Cloud TTS supports Vietnamese at $16/1M. ElevenLabs does not specifically list Vietnamese. Audexum is €24.17/1M on the Pro plan with correct tonal synthesis and a free tier, the most accessible option for Vietnamese TTS.

Can I use Vietnamese TTS for a Vietnam-market mobile app?

Yes. The REST API returns WAV audio from UTF-8 Vietnamese text. Vietnamese diacritics are standard Unicode, so no special encoding required on the caller side.

Audexum speaks 32 languages.

Switch language with one parameter. Same endpoint, same price.

See the full language list in the API docs or the multilingual TTS guide.

Try Vietnamese TTS free.