Soniox named best-in-class STT for voice agents
Soniox App

Voice-to-text for nursing charts in Japanese

Type with your voice in any app — up to 4× faster than typing. Built for nurses who need accurate, hands-free text input across 60+ languages. Works with Japanese and 60+ other languages.

mobileDownload on the App Store and Google Play

Apple App StoreGoogle Store
Free to start, with free credits added every week.

Say it once, it is written in Japanese

Typing is slow. Speaking is natural. Soniox App turns your voice into finished text as you speak. Get seamless Japanese transcriptions today.

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Hands-free input

Keep your hands free while composing Japanese text. Ideal for multitasking or when typing is inconvenient.

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Long-form writing

Write Japanese reports, articles, and documentation at the speed of thought. Voice Typing keeps up with natural speech.

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Professional vocabulary

Soniox App handles specialized Japanese terminology and professional language with accuracy.

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Easier on your body

Reduce strain from extended Japanese typing sessions. Voice Typing lets you write comfortably for longer.

Voice input that works everywhere in Japanese

Voice Typing works system-wide across all apps — no integrations or plugins needed. Handles Japanese across varieties like Kanto and Kansai.

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One tap to dictate

Activate Japanese Voice Typing with a single tap and start speaking. Text appears instantly wherever your cursor is.

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60+ languages

Dictate in Japanese and 60+ other languages with seamless mid-sentence language switching.

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Works in any text field

Dictate Japanese into any app or text field — emails, documents, messages, search bars, and more.

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Choose your writing style

Set the tone for your Japanese text — formal, casual, or anything in between — and Voice Typing adapts the output accordingly.

Japanese at a glance

Key facts about Japanese.

日本語

native name

125 million

speakers worldwide

1

country where spoken

Japanese transcription accuracy

Soniox App is powered by next-gen speech AI model developed inhouse by Soniox. The table below shows how Soniox AI performs on Japanese transcription compared to 8 other providers.

ProviderWER (Japanese)Accuracy
Soniox#18.7%91.3%
Speechmatics10.3%89.7%
Deepgram11.7%88.3%
ElevenLabs12%88.0%
OpenAI13.8%86.2%
Azure14%86.0%
Google14.2%85.8%
AssemblyAI14.8%85.2%
AWS16.2%83.8%

Word error rate (WER) measures how many words a speech-to-text engine gets wrong. Lower is better.

Soniox outperforms Speechmatics, Deepgram, ElevenLabs, OpenAI, Azure, Google, AssemblyAI, and AWS on Japanese transcription accuracy.

Soniox App: The all-in-one AI speech toolkit

Smart Scribe, Translator, and Voice Typing cover three ways people work with speech.

Smart Scribe

Caption Japanese conversations live

App feature Smart Scribe
See Smart Scribe arrow_forward

Translator

Translate Japanese and 60+ other languages live

App feature Translator
See Translator arrow_forward

Voice Typing

Speak to type in Japanese

App feature Voice Typing
See Voice Typing arrow_forward

One app. Everything you do with voice in Japanese.

Get started free

Transcribe conversations in real time with Soniox.

mobileDownload on the App Store

Apple App StoreGoogle Store
Free to start, with free credits added every week.

Learn everything Soniox can do

Need more details? The Soniox Help Center provides complete documentation for the app, including guides, videos, screenshots, and feature walkthroughs.

Learn how to use Smart Scribe, Translator, Voice Typing, and more.

Explore the Help Center

Private by default

Soniox never stores your recordings and never uses your audio to train models. Everything is processed securely in real-time, then gone.

Japanese language trivia

こんにちは - that's how you say hello in Japanese.

History and background

  • history

    Japanese uses three writing systems simultaneously: kanji (Chinese characters), hiragana, and katakana.

  • history

    The Tale of Genji, written around 1000 CE by Murasaki Shikibu, is considered the world's first novel.

  • history

    Japanese borrowed its writing system from Chinese but adapted it to fit a fundamentally different grammar.

Distinctive features

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    Japanese uses three scripts simultaneously: kanji for content words, hiragana for grammar, and katakana for foreign words.

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    Japanese has an elaborate honorific system (keigo) with distinct humble, polite, and respectful forms.

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    The language is Subject-Object-Verb in word order, and the verb always comes at the end of the sentence.

Dialects and varieties

KantoKansaiTohokuKyushuOkinawan

Official language in

Japan

Frequently asked questions about Japanese voice-to-text for nursing charts

How well does Soniox App handle Japanese as it is actually spoken day to day?arrow_downward
Very well. Japanese has 125 million speakers, mostly in Japan, and real-world Japanese is very different from the clean, slow speech most tools are trained on. Fast delivery, informal vocabulary, regional expressions, and overlapping voices in group settings are all things Soniox App is built to handle.
How accurate is Soniox for Japanese compared to other providers?arrow_downward
Soniox achieves a 8.7% word error rate for Japanese, outperforming Speechmatics, Deepgram, ElevenLabs, and 5 other providers in independent benchmarks. Lower word error rate means fewer mistakes in your transcripts.
What writing system does Japanese use?arrow_downward
Japanese is written in the CJK script. Soniox App handles Japanese text natively, including all script-specific characters.
Does Soniox handle different Japanese dialects?arrow_downward
Japanese has several recognized varieties, including Kanto, Kansai, Tohoku, Kyushu, and others. Soniox is trained on diverse Japanese speech data, so it handles regional variation and dialectal differences effectively.
What language family does Japanese belong to?arrow_downward
Japanese belongs to the Japonic language family. Understanding these linguistic relationships helps Soniox deliver better accuracy across language families.
What is Soniox App?arrow_downward
Soniox App is a real-time speech app that turns spoken conversations into text and translations instantly. You can transcribe, translate, dictate, and summarize speech across 60+ languages — live, as people speak.
Is Voice Typing faster than typing?arrow_downward
For most people, yes. Speaking is typically up to 4× faster than typing, especially for longer text.
Where can I use Voice Typing?arrow_downward
You can use Voice Typing across apps and text fields — wherever you normally type — on supported platforms.
Is my audio or data stored?arrow_downward
No. Soniox App never stores your audio or uses it to train models. Text outputs are stored only to provide the service to you and are never used for model training.
Is Soniox App free to use?arrow_downward
Yes. Soniox App offers free usage to get started, with paid plans available for unlimited and advanced features.