LLM & RAG Chatbot Development (AI on Your Own Data)
LLM and RAG development means building AI that answers from your own documents, ERP and databases — retrieval-augmented generation — instead of guessing from the internet. Lets Automation, an AI development company in Surat, India, builds private RAG chatbots and LLM applications that can run on your own server. Fixed scope, fixed price, you own the code.
Sound familiar?
- The answer exists somewhere — in a PDF, an email thread, the ERP — but finding it takes longer than asking a colleague.
- New staff take months to learn what the senior people know.
- A public chatbot gave confident answers that were simply wrong for your business.
- You can't send customer or financial data to a public AI tool.
- Reports and summaries are written by hand from data the system already has.
What we build
Internal knowledge assistant
- What it is:
- Answers staff questions from your SOPs, policies, contracts and past tickets, with the source cited.
- What it replaces:
- Asking the one person who knows.
- What changes:
- Anyone can find the answer in seconds, with a reference.
Customer-facing RAG chatbot
- What it is:
- Answers customers from your catalogue, documentation and policies on web or WhatsApp, with guardrails and escalation.
- What it replaces:
- Generic chatbots that make things up.
- What changes:
- Answers grounded in your content; humans only for the exceptions.
ERP and database Q&A
- What it is:
- Natural-language questions over your ERP, Tally or database — stock, orders, dues — with permissions respected.
- What it replaces:
- Building a report to answer one question.
- What changes:
- Managers ask; the system answers from live data.
Private, self-hosted deployment
- What it is:
- The retrieval layer, database and application on a server you control, in India, so documents and customer data never leave it.
- What it replaces:
- Pasting sensitive data into public tools.
- What changes:
- AI on your data, under your control.
How it works
- 1
Free 30-minute call: which documents and systems hold the answers, and who may see what.
- 2
Written plan within 7 days — data sources, hosting, model choice, fixed price and timeline.
- 3
We build the retrieval pipeline over your documents and databases and wire in permissions.
- 4
Demo every two weeks against real questions; we measure where answers are wrong and fix the sources.
- 5
Launch with source citations and logging, then 90 days of support.
Technology
- LLMs
- RAG
- OpenAI
- Python
- FastAPI
- Next.js
- databases
- cloud platforms
- Tally
- Zoho
Common questions
Can the chatbot run entirely on our own server?
Yes. The retrieval layer, the database and the application can all run on a server you control, in India. Which language model it uses — and whether that runs locally too — is a choice we make together in scoping, based on your privacy requirements and budget.
How much does an LLM or RAG chatbot cost?
We don't publish fixed prices for an LLM or RAG chatbot, because the price depends on scope — how many channels, systems and features you want included changes what we build. What we do fix is the quote: after a free 30-minute call you get a written plan with a fixed scope, fixed price and fixed timeline before any code is written. No hourly billing, and if you add to the scope later, that's quoted separately and in writing.
How long does an LLM or RAG chatbot take to build?
We build in 4–8 week sprints with a working demo every two weeks. Most clients see their first automation live within about 6 weeks. The written plan you receive after the free call includes a fixed timeline for your specific scope.
Do I own the code and data?
Yes. You own the code, the server and the data. We build on tools like n8n and open APIs so there's no licence that scales with your usage, and there's no 12-month lock-in — you can take the system in-house whenever you want, or keep us on for support.
Do you work with businesses outside Surat?
Yes. We're based in Surat, Gujarat, and work with businesses across India and remotely with clients abroad. Scoping, the fortnightly demos and support all run over calls and WhatsApp, so location doesn't change how we work.
Want to know what LLM & RAG Chatbot Development would look like in your business?
Book a free 30-minute call. We'll map your current process and send a written automation plan within 7 days.
Last updated: 22 Oct 2026 · Built by Lets Automation, Surat