Zalo AI
Vietnamese speech, OCR, and NLP APIs built by VNG for Vietnamese dialects
Zalo AI is a Vietnamese speech, OCR, and NLP API platform from VNG best for businesses and developers building native-accent Vietnamese voice, chat, or document automation. Its SEA edge is dialect-specific coverage: four TTS voices split across Northern and Southern Vietnamese accents, a free 500-character TTS tier, and the Kiki Auto voice assistant with 1M+ installs. Caveat: production-volume access requires paid API key packages rather than transparent public pricing.
- ✓Four native Vietnamese TTS voices covering Northern and Southern accents
- ✓Free text-to-speech tier with no login required
- ✓Backed by VNG's Vietnamese NLP research and public datasets (VLSP, VCC2023)
- ✓Kiki Auto voice assistant has over 1 million Vietnamese installs
- ×Free tier is capped at 500 characters per TTS request
- ×Production API pricing requires purchasing key packages rather than published self-serve rates
- ×Focus is Vietnamese-language only, not other SEA languages
About Zalo AI
Zalo AI (Zalo AI Labs) is the AI research and API division of VNG Corporation, the company behind Vietnam's largest messaging app Zalo. It provides Vietnamese-language text-to-speech, speech recognition, and OCR APIs, including a free ZaloTTS engine limited to 500 characters per request and paid API key packages for production volume, plus the Kiki Auto voice assistant used by more than 1 million Vietnamese drivers.
Key Features
Best For
Southeast Asia Fit
Zalo AI is built by VNG directly on Vietnamese speech data, offering four native voices split between Northern and Southern accents rather than a single generic Vietnamese voice. Its research team has placed in international competitions for Vietnamese NLP and released public Vietnamese datasets (VLSP, VCC2023), and its Kiki Auto voice assistant has over 1 million Vietnamese installs, giving it dialect coverage that global speech APIs typically lack.
- Vietnam
- SEA
Integrations
- Messaging
- Zalo
- Other
- Kiki Auto voice assistant
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The questions operators actually ask.
Is Zalo AI's text-to-speech free to use?
Zalo AI offers a free ZaloTTS tier with no login required, but each request is capped at 500 characters. Higher-volume production use requires a paid ZaloAI API key package.
What Vietnamese accents does Zalo AI support?
ZaloTTS currently supports four Vietnamese voices, split between two Northern accents and two Southern accents, rather than a single generic Vietnamese voice.