RAG development · Tokyo
RAG development services in Tokyo
Detailed specifications, careful testing and reliable schedules, with a team overlapping most of your afternoon.
Clarigo Infotech builds retrieval-augmented generation (RAG) systems: AI search and assistants that find the right information in your documents, databases and knowledge base, then answer with sources. RAG keeps answers accurate and current without retraining a model, and respects who is allowed to see what.
Japanese companies most often hire us for AI automation, enterprise systems and mobile apps.
10+
Years of delivery
600+
Projects delivered
20+
Countries served
25-30
Days to a live MVP
Get a free consultation
Tell us what you need. A senior engineer replies within one working day.
Quality, detail and reliability
Teams in Japan and Korea expect precise specifications, thorough testing and schedules that hold. We plan in detail, report regularly and treat quality as non-negotiable.
Detailed specifications
Written requirements, screen specifications and acceptance criteria agreed before development.
Thorough testing
Automated and manual testing with reports at every milestone.
Reliable schedules
Realistic plans, regular written progress reports and early warning of any risk.
Long-term partnership
The same team maintains and improves the product after launch.
What we build with RAG
Chat with your documents
Ask questions across PDFs, policies, manuals and contracts and get answers with citations.
Enterprise knowledge assistants
One place for staff to find answers across Google Drive, SharePoint, Confluence and more.
Customer support answers
Grounded answers for support teams and chatbots, drawn from your help centre and product data.
Search over structured data
Combine document search with SQL and APIs so answers include live numbers.
Permission-aware retrieval
Users only get answers from content they are allowed to see.
Evaluation and tuning
Test sets that measure retrieval and answer quality, and tuning until they pass.
How we approach RAG development
Why RAG instead of fine-tuning
Fine-tuning changes how a model writes; RAG changes what it knows at the moment it answers. For most business questions RAG is cheaper, easier to update and easier to audit, because every answer points to its source.
Getting retrieval right
Quality depends on how documents are cleaned, split, embedded and searched. We use hybrid search (keyword plus vector), re-ranking and metadata filters, and test retrieval separately from the final answer.
Keeping it current and secure
Connectors keep the index in sync as documents change, and access rules from your source systems are applied at query time so nobody sees what they shouldn't.
Measured, not guessed
We build a test set of real questions with expected answers and track accuracy, citation quality and 'I don't know' rates, so you can see improvement and catch regressions.
Remote, but close to Tokyo
Time-zone overlap
Japan is three and a half hours ahead of India, so our working days overlap for most of your afternoon, with a stand-up and same-day replies.
Japan's Act on the Protection of Personal Information (APPI)
We design to the APPI: clear purpose of use, security controls, rules for third-party and cross-border transfers, and data hosted in Japanese cloud regions when required. We sign NDAs before work starts.
Billing
Invoices in Japanese yen (JPY) or US dollars. Typical senior rates are $25 to $49 (USD) per hour, or a fixed price for a defined scope.
Industries we work with in Tokyo
Tokyo companies work with us on AI automation, enterprise systems and mobile apps, with detailed specifications, thorough testing and regular written reports.
Automotive
Carmakers invest in connected-car software and factory automation. We build AI agents, assistants and automation around these workflows.
Electronics and robotics
Hardware makers need companion apps and embedded AI. AI here usually means faster reporting, fewer manual steps and better customer replies.
Gaming and anime
Entertainment firms reach global fans through apps and stores. We start with one costly process and automate it end to end.
Retail and convenience
Chains run loyalty apps and cashless checkout. We build AI agents, assistants and automation around these workflows.
How the hours line up
Our team's hours, in Tokyo time
13:30–23:00
Monday to Friday
Overlap with your working day
13:30–18:00
About 4.5 hours every day
Daily stand-up
14:00
Tokyo time, plus written updates every evening
Local platforms and setup
Messaging channels
Languages
Local payments
Data hosting
AWS Asia Pacific (Tokyo, Osaka) and Google Cloud asia-northeast1 (Tokyo), in your own cloud account, so data stays where your rules require.
How it works
Week 1: discovery and design
We agree the use case, success measures and data, and show you a clickable design.
Weeks 2-3: build and integrate
We build, connect it to your systems and data, and demo working software every week.
Week 4: test and launch
We test with real cases, add monitoring and guardrails, then go live.
After launch: improve and scale
The same engineers keep tuning quality, cost and features as usage grows.
See what we've built
Try it yourself, free
Free browser tools from our team. No sign-up needed.
RAG development services: questions from Tokyo
Do you work with companies in Tokyo?+
Yes. Clarigo Infotech works with companies across Tokyo, including Tokyo, Yokohama, Kawasaki, as part of clients in 20+ countries. Japanese companies most often hire us for AI automation, enterprise systems and mobile apps. We work remotely from India with one in-house team.
What time-zone overlap do we get from Tokyo?+
Japan is three and a half hours ahead of India, so our working days overlap for most of your afternoon, with a stand-up and same-day replies.
How do you handle Japan's Act on the Protection of Personal Information (APPI)?+
We design to the APPI: clear purpose of use, security controls, rules for third-party and cross-border transfers, and data hosted in Japanese cloud regions when required. We sign NDAs before work starts.
Which currency do you bill in, and what does it cost?+
We bill in Japanese yen (JPY) or US dollars. Senior engineers typically cost $25 to $49 (USD) per hour, and fixed-scope projects such as an MVP in 25 to 30 days are quoted after a free consultation.
Do you work with automotive companies?+
Yes. Automotive is one of Tokyo's key sectors, and we start with one costly process and automate it end to end.
What time are your meetings in Tokyo time?+
Our team works 13:30–23:00 Tokyo time, so we overlap with your day from 13:30–18:00. Daily stand-ups are usually at 14:00 your time.
Can you build in Japanese and English?+
Yes. We build interfaces and content in Japanese and English, and test them with native speakers before launch.
How long does a RAG project take?+
A focused RAG assistant over one set of sources typically goes live in 25 to 30 days, including a test set to measure quality.
What is RAG (retrieval-augmented generation)?+
RAG is a way of building AI assistants that first search your own documents and data for relevant information, then use a language model to answer from what was found, usually with citations.
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