Japanese to Thai speech-to-text translation API
Stream Japanese (日本語) speech and get Thai (ภาษาไทย) back in real time. One WebSocket, ISO codes ja to th, and ultra-low latency for voice agents and live apps.
Trusted by teams building global voice products
Production-ready Japanese to Thai translation API
Real Japanese speech includes accents, regional dialects, code switching, and domain-specific vocabulary. Soniox recognizes it in a single model and streams Thai while the speaker is still talking.
Japanese (Japonic) and Thai (Kra-Dai > Tai) come from different language families, so word order and morphology differ. Soniox reorders meaning in-stream instead of word by word.
Japanese is written in CJK and Thai in Thai, so Soniox emits correctly scripted Thai text.
Real-time Japanese to Thai translation
Soniox streams the Japanese transcript and the Thai translation on the same connection, word by word, so meaning lands while the speaker is still talking.

One-way translation
Translate live Japanese into Thai. Everyone in the conversation sees the same translated stream.

Two-way Japanese and Thai conversation
Each side speaks naturally and hears the other in their own language. Use it for live interpreters, bilingual voice agents, travel assistants, and customer support.

Japanese and Thai through a single stream
Set the source and target codes once. Transcript and translation arrive interleaved on one labeled token stream, with no extra round trip.

{
"model": "stt-rt-v5",
"translation": {
"type": "one_way",
"source_language": "ja",
"target_language": "th"
}
}A breakthrough in real-time Japanese to Thai translation
Translate before the sentence ends
Thai meaning lands as Japanese is spoken, not after the caption catches up.
Directional ja to th streaming
Set the source and target codes once. Both arrive in a single labeled token stream.
Native-speaker Japanese STT accuracy
Accurate Thai translation starts with accurate Japanese recognition across accents and language switching.
Names, numbers, and domain terms
Preserved across the pair, including phone numbers, emails, and IDs.
Japanese to Thai translation is built on top of the Soniox Speech-to-Text API. Turn it on by adding a translation block to your request.
Estimate your Japanese to Thai translation cost
Set your monthly audio volume to estimate your Soniox API cost for real-time speech-to-text translation.
Pricing calculator
Stop overpaying for Japanese speech AI
1,000 hours of audio / month
Pricing assumptions
Based on public pay-as-you-go pricing. Enterprise discounts and committed-use contracts may differ. Some providers charge separately for certain features. The calculator uses the public price for the provider configuration that most closely matches Soniox.
Translate Japanese to any language
From Japanese to Thai, or Japanese to any of 60+ supported languages. All real-time.
Frequently asked questions
How do I translate Japanese to Thai with the API?
Is Japanese to Thai translation real-time?
What about translating Thai to Japanese?
Does Soniox handle CJK to Thai output?
Does Soniox handle Japanese dialects and accents?
Which other providers support Japanese to Thai?
How fast is Japanese to Thai translation?
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