Japanese Speech to Text
Convert Japanese speech-to-text with high accuracy, low latency, and enterprise-grade scalability. Deepgram delivers real-time and batch transcription through a developer-first speech-to-text API.
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Fast and accurate Japanese speech recognition for real-world audio
Get real-time Japanese speech-to-text in under 300 ms while maintaining high accuracy in noisy, accented, or overlapping conversations.
Build Japanese Voice Agents with Flux Multilingual
Build and scale global voice agents with one model
Supports 10 languages in a single conversational model, enabling teams to build and deploy voice agents globally with one integration. No per-language infrastructure or model orchestration required.
Ultra-low latency conversational speech recognition
Model-based turn detection delivers accurate end-of-turn decisions in under 400 ms, keeping conversations fluid and responsive across languages.
Monolingual-grade accuracy with real-time control
Flexible real-time control through language hints or automatic detection, with native code-switching and dynamic adaptation as conversations evolve.
Japanese Language Overview
Speakers: 130 million total speakers
Regions: Japan (primary), with diaspora communities in the United States, North and South America, Europe, and Australia
Dialects: Tokyo (Standard Japanese), Kansai, Kyushu, Tohoku, Hokkaido, Okinawan
Writing system: Hiragana, Katakana, and Kanji
Language family: Language isolate
Japanese is widely used across Japan's high-tech industries, healthcare, media, and education sectors, making it a key language for call analytics, customer support AI, anime and media captioning, medical transcription, legal documentation, and multilingual voice agents.
Japanese Speech-to-Text Capabilities
Deepgram includes everything required to produce accurate, readable, and secure Japanese transcripts out of the box.
Diarization
Automatically detect and label who is speaking in multi-speaker Japanese conversations.
Smart formatting
Apply automatic capitalization, paragraphing, and clean transcript structure for Japanese text.
Search
Instantly find words or phrases inside long Japanese recordings without reprocessing audio.
Utterances
Segment streaming Japanese audio into real-time sentence-level units for voice agents.
Punctuation
Add accurate punctuation and capitalization to Japanese transcripts for easy reading.
Redaction
Automatically remove sensitive data like credit cards, phone numbers, and PII from Japanese transcripts.
Japanese Speech-to-Text features
Keyterm prompting for Japanese
Boost recognition of brand names, product terms, and domain-specific vocabulary in Japanese audio to improve keyword recall and transcript accuracy.
Automatic language detection
Identify when audio is spoken in Japanese and transcribe it without pre-selecting a language. For mixed-language datasets, sources, and batch transcription pipelines.
Multilingual speech recognition
Transcribe audio where speakers switch between Japanese and other supported languages in the same stream without model swapping or post processing required.
Scale beyond Japanese with one API
Start with Japanese speech-to-text, then expand to 45+ languages using the same API, models, and tooling.
Frequently Asked Questions
Ready to build with Japanese speech to text?
Start transcribing Japanese audio with Deepgram's speech to text API. It is fast, accurate, and built for real-time applications.