Japanese data for AI training, collected to your brief
Japanese data from IndecalAI is collected or reviewed by a native Japanese speaker, not pulled from an existing archive. We work with speakers across East and Southeast Asia, where writing systems and speech patterns vary widely from one market to the next, matched to your brief and checked before delivery.
What Japanese data can we produce?
Japanese data from IndecalAI is speech, text, conversational and translation data collected or reviewed by a Japanese speaker for your brief, not pulled from an existing archive.
Writing systems, formality levels and spoken rhythm shift noticeably across East and Southeast Asia, so a brief written for one market rarely transfers cleanly to the next without a native reviewer checking it.
This sits across several of our services depending on what you need: data collection for raw speech or text, conversational AI data for dialogue, and translation and localization for converting between Japanese and another language.
Image and video categories on our datasets hub don't depend on language at all, so a project can combine this with visual data from the same region.
Japanese data at a glance
- Data types
- Speech, text, conversational, translation
- Services
- Data collection, Translation
- Who works on it
- Contributors from our network of 30,000+ people worldwide, matched to your brief.
- Review
- A review pass before anything is delivered.
- Your data
- NDA first, used only for the agreed scope, returned or deleted when you ask.
- First step
- A small free sample before you commit.
What to know about Japanese before you brief it
Japanese is the national language of Japan and has a long, continuous written history. It is heard in the media and in everyday life in a fairly standard form, with strong regional accents such as the speech of the Kansai area.
Written Japanese mixes three scripts in the same sentence, and it does not put spaces between words, so any tokenizer needs a plan for segmentation. Many kanji have more than one reading, which means a transcript without readings can be ambiguous when someone later wants to generate speech from it. Politeness levels also change whole verb forms, so say whether your users expect casual or formal address.
Languages that sit close to Japanese in script, family or region: Korean data, Mandarin Chinese data, Cantonese data, Mongolian data, Vietnamese data and Thai data.
Categories we build in Japanese: Japanese BFSI Call Center Speech Data.
Deciding what to specify for any language? The guide to speech data collection covers the choices that apply across languages, and the one on transcription for AI and for people covers how speech becomes text.
Japanese at a glance
- Language family
- Japonic
- Script
- a mix of kanji, hiragana and katakana, with Roman letters in places
- Spoken mainly in
- Japan
- Name it in a brief
- Standard Japanese, Kansai speech, other regional accents
- Its own name
- 日本語
Four ways to request Japanese data
Each links to the service that runs it, with its full scope and process.
Japanese speech data
Recorded speech in Japanese: calls, prompts and voice bot utterances, matched to the region and reviewed before delivery.
Japanese text data
Written Japanese: messages, reviews, tickets or chat logs, written or labeled by people who read it natively.
Japanese conversational data
Scripted or spontaneous Japanese dialogue for voice bots, support agents and customer-facing assistants across this region's markets.
Japanese translation
Human-verified translation between Japanese and another language, covering prompts, UI copy and training data.
What to put in a Japanese brief
Four things worth deciding before contributors start, so the first sample already looks right.
Region or dialect
Japanese is spoken mainly in Japan. Worth naming in a brief: Standard Japanese, Kansai speech, other regional accents. Tell us the region or community you're targeting so contributors are matched to the right one.
Script or transliteration
Script for Japanese: a mix of kanji, hiragana and katakana, with Roman letters in places. Say whether you want the native script, a transliterated version, or both, especially if your downstream system only reads one.
Data type mix
Speech, text, conversational and translation can be requested together or on their own. Tell us the mix your model needs.
Volume and timeline
A rough sense of how much data and how soon lets us staff the right number of contributors from the start.
From your brief to reviewed Japanese data
One named contact owns the project from scoping to the last file.
Brief
You tell us the data type, the Japanese variety or region and roughly how much you need.
NDA and scope
We sign an NDA before any data moves, then agree the scope with you.
Free sample
We produce a small sample free, so you can check it before you commit.
Production
Contributors from our network work in our own tools, to the brief you set.
Review
A review pass runs before anything is delivered.
Delivery
The data comes to you, or moves on to another service with us.
Where Japanese data ends up
Common jobs for Japanese data. They're examples of the work, not a client list.
Voice bots and IVR
Recorded Japanese prompts and calls teach a voice bot to recognize how people actually speak, not just how a script reads.
Support chat and tickets
Everyday Japanese messages, written in the domain you work in, give a chat assistant real phrasing to learn from.
Content moderation and sentiment
Labeled Japanese posts, reviews and messages teach a model to read tone and intent correctly in this language.
Localizing a product
Translating prompts, UI copy and training data into Japanese so a product reads like it was written for that market, not machine-translated.
Off-the-shelf Japanese data, or built to your brief?
We hold around 35,000 hours of off-the-shelf speech, prompts and conversations already collected across our network, and roughly 500 hours of it is Japanese: see the Japanese speech dataset. Here's how the two paths compare.
| Topic | A typical off-the-shelf dataset | Japanese data with us |
|---|---|---|
| Already collected? | No way to know until you've already paid for it | Yes: roughly 500 hours of Japanese speech are already recorded, and we tell you what they cover before you buy |
| Fit to your brief | Built for whoever bought it first, not your exact region, register or use case | Collected or reviewed to the region, script and format you specify |
| Who else has it | The same files can be sold to more than one buyer | Custom collections are scoped to your engagement. For stock data, who else can license it is set in your licence |
| Checking the fit | You find out after you've already paid for it | A small free sample first, so you check it before committing to volume |
Japanese data terms, in plain words
General definitions. They describe the field, not a claim about us.
Where Japanese data fits
Japanese is one of 100 languages on our languages directory. You can also browse every category on the datasets hub.
Questions about Japanese data
The datasets FAQ covers questions that apply across every category.
Do you support Japanese?
Yes. Japanese is one of 100 languages in this directory, part of our wider language coverage worldwide, including deep Indian language coverage. Tell us the regional variety you need.
Do you already have any Japanese data collected?
Yes. Roughly 500 hours of Japanese speech, prompts and conversations are already recorded and ready to license. The Japanese speech dataset page has the details, and anything it doesn't cover we collect to your brief.
Can you mix regional varieties of Japanese in one project?
Yes. Tell us the mix of regions or dialects you need and we'll match contributors from our network to that brief.
Which data types are available in Japanese?
Speech, text, conversational data and translation to or from Japanese. Image and video categories don't depend on language, so Japanese speakers can also appear in those briefs on request.
Is a sample available before we commit?
Yes, a small free sample first.
Can this run alongside other languages in the same project?
Yes. Many engagements mix languages, domains and data types under one brief and one named contact, using our network of 30,000+ people across 150+ projects delivered so far.
What counts as a regional variety of Japanese?
A version of the language tied to a place or community, which can differ in vocabulary, pronunciation, formality or script from another region's variety. Name the region in your brief if it matters for your use case.
Can you handle Japanese in its native script?
Yes. Contributors work in the native script by default, with transliteration available if your project needs it instead.
Which variety of Japanese should I ask for?
Ask for the one your users actually speak. Japanese is spoken mainly in Japan, and the forms most worth naming in a brief are Standard Japanese, Kansai speech, other regional accents. If you are unsure, describe your users and where they live, and your named contact will help you decide before collection starts.
How is Japanese written, and does it matter for the data?
Japanese data uses a mix of kanji, hiragana and katakana, with Roman letters in places. The script and its encoding affect how a model reads the data, so say in the brief which one you need and whether a romanized or transliterated version is also required.
Request Japanese data
Pick the data type, confirm Japanese as the language and a rough volume, and send it. We'll produce a small sample free before you commit.
- Your named contact replies within one business day.
- We sign an NDA before any data changes hands.
- We produce your free sample, then agree the full scope.
This opens your email app with the brief filled in. Nothing is sent until you press send. You can also use the contact page.