ReliaBuilds
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AI Chatbot Development

Custom LLM and RAG chatbots trained on your own documents, live where your customers already talk to you.

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What we build

  • Support chatbots

    Answers from your help centre and policies, with a human handoff carrying the full conversation.

  • Sales assistants

    Qualify visitors, answer product questions and book calls or push leads into your CRM.

  • Internal knowledge bots

    Staff ask questions of handbooks and SOPs and get answers with sources.

  • RAG search

    Answers retrieved from your own documents, with sources cited in each reply.

  • Voice agents

    Speech features that listen, score or respond in realtime.

  • Channel deployment

    One shared backend serving your website, WhatsApp, Slack or your own app.

Designed and built by us

How we work

  1. DiscoverOne call to map goals, users and constraints.
  2. DesignWireframes, then a clickable prototype you approve.
  3. BuildWeekly demos on a staging link you can open any time.
  4. TestQA, security and performance passes before launch.
  5. LaunchShip, monitor, and hand over documented code you own.

What you get

Everything is yours from day one: the code, the designs and the accounts.

  • Chatbot trained on your documents
  • Chat widget for your website
  • WhatsApp and Slack connections
  • Weekly demos on staging
  • Security review of the integration
  • Repository in your GitHub organization

Built withClaude / OpenAI / Open-weight models / Next.js / Node.js

Questions

How much does it cost to build an AI chatbot?

It depends on knowledge sources, integrations, channels and accuracy requirements, so we give a fixed quote after a discovery call rather than a rate card. The table above lists what moves the figure. A small pilot is the lowest-risk way to start.

Can the chatbot be trained on my own documents?

Yes. With RAG, we ingest your PDFs, web pages, help articles and databases, then the chatbot answers from them and cites the source. You can update the answers by updating the documents, with no model retraining required.

How long does chatbot development take?

A focused pilot with one channel and one knowledge source typically takes a few weeks. Multi-channel builds, voice, or deep system integrations take longer. We confirm a timeline in writing during discovery and show progress in weekly demos.

What is the difference between a custom GPT and a custom-built chatbot?

A custom GPT lives inside one vendor's app and is limited to its features. A custom-built chatbot runs in your website, WhatsApp or product, connects to your systems, controls access and logs, and lets you switch models.

How do you stop the chatbot making things up?

We ground answers in retrieved documents, instruct the model to say it doesn't know when sources are missing, show citations, and test against real questions before launch. For sensitive topics, we add human hand-off rules.

Do I own the chatbot?

Yes. The repository sits in your GitHub organization, cloud accounts are in your name, and the contract assigns all IP to you.

How do we start?

Contact us with the audience, the questions and the documents you have. We reply within 24 hours with a scoped pilot. Founders can also see what we do for startups. Email hello@reliabuilds.com or WhatsApp +880 1705 646545.

The full guide

What kinds of AI chatbots do we build?

We build four kinds of custom chatbot for business: customer support, sales and lead qualification, internal knowledge assistants, and voice or speech-based tools. Each one is a large language model (LLM) connected to your own data and systems, not a generic bot with your logo on it.

  • Support chatbots. Answer questions from your help centre, policies and past tickets, and hand off to a human with the full conversation when unsure.
  • Sales chatbots. Qualify visitors, answer product questions and book calls or push leads into your CRM.
  • Internal knowledge assistants. Staff ask questions of handbooks, SOPs and documents and get answers with sources.
  • Voice and speech. Studious Prep, which we built, scores spoken IELTS answers in realtime and gives instant band feedback. It has. That is speech and scoring rather than a support bot, but it is the same production AI engineering.

Chatbots are one part of our wider AI automation work, which also covers workflow automation and AI features inside products.

Studious Prep AI IELTS speaking practice
Studious Prep: live IELTS speaking practice scored by AI, with instant band feedback.

What is a RAG chatbot and do I need one?

A RAG (retrieval-augmented generation) chatbot looks up relevant passages from your documents at the moment of each question, then writes an answer from them. You need one when answers must come from your content and stay current, which covers most business use cases.

The alternatives are fine-tuning and plain prompting. Here is how they compare.

Approach Best for Weak spot
RAG Answers grounded in your docs, policies and product data; content that changes often Needs clean source documents and good retrieval
Fine-tuning A fixed tone, format or narrow task done consistently Doesn't reliably add new facts; costly to update
Prompting only Simple, general tasks and quick prototypes Can't know your private data
RAG plus fine-tuning Large products needing both accuracy and a specific style More moving parts to maintain

Most clients start with RAG. It can be trained on your own documents without retraining a model, and updating the chatbot means updating the documents. We cite sources in each answer, so your team can check what it said and why.

Which AI model should power the chatbot?

Choose the model by the task, the data sensitivity and the response speed you need, not by brand. We build the chatbot so the model can be swapped later, which keeps you from being locked into one vendor.

Option Strengths Consider when
Claude (Anthropic) Strong at long documents and careful, instruction-following answers Policy-heavy support, knowledge assistants
GPT (OpenAI) Broad tooling, strong general ability Mixed tasks, fast prototyping
Open-weight models (Llama, Mistral) Run on infrastructure you control Strict data residency or high-volume use

We test two candidates on your real questions during the pilot and recommend the one that scores best for your use case, then show you the results.

How do we handle data privacy?

Your data stays yours: we use your documents only to power your chatbot, and we choose a hosting and model setup that fits your privacy requirements. Before building, we agree in writing what data goes in, where it is stored and who can see it.

  • Access control. The chatbot only retrieves documents the signed-in user is allowed to see.
  • Provider terms. We use API plans that do not train on your data, and tell you which provider handles what.
  • Redaction. Sensitive fields such as card numbers can be masked before they reach the model.
  • Hosting choice. Cloud region and self-hosted models are options when regulation or contracts require them.
  • Security review. Our cybersecurity team reviews the integration, including prompt-injection risks, before launch.

If you work under a specific regulation (HIPAA, GDPR, the Australian Privacy Act), tell us on the first call so it shapes the design.

Where can the chatbot live?

We deploy the chatbot wherever your users already are, on one shared backend so answers stay consistent across channels.

  1. Your website. An embedded chat widget built into your Next.js or existing site.
  2. WhatsApp. Through the WhatsApp Business platform, useful for customers who already message you.
  3. Slack. For internal assistants that answer in the channels staff use.
  4. Inside your product. A chat or voice feature in your web or mobile app.

What drives the cost of a chatbot?

We don't publish prices. Chatbot work varies too much, so we give a fixed quote after discovery. Six factors move the quote.

Cost driver Why it matters
Knowledge sources A tidy help centre is quick; scattered PDFs, wikis and databases need ingestion work
Integrations Reading a CRM is simple; booking, refunds or updating records needs careful design
Channels One website widget is lighter than web plus WhatsApp plus Slack
Accuracy and safety needs Regulated or high-stakes answers need evaluation sets, guardrails and human review
Voice or multilingual Speech and extra languages add components and testing
Ongoing usage Model calls, hosting and monitoring are running costs that scale with traffic

We start with a small pilot on one channel and one knowledge source, so you see real answers before committing to a full build. Ongoing support runs on a monthly retainer.

How do we build and launch a chatbot?

We use our standard five-stage process, adapted for AI, with a fixed scope and quote before code and a working demo every week.

  1. Discovery. We define the questions the chatbot must answer, review your content, and agree on success measures and a fixed quote.
  2. Design. Conversation flows, tone, hand-off rules and a clickable prototype.
  3. Develop. Ingestion pipeline, retrieval, model integration and channel connections, with weekly demos on staging.
  4. Test. We run a set of real questions and check accuracy, sources and failure behaviour, plus a security review.
  5. Launch. Deploy, monitor conversations, and tune with real traffic. Typical pilots take weeks, not months, and we confirm the timeline in the discovery call.

Code and cloud accounts are in your name. You work with senior engineers in your hours.

Contact

Start something.

Talk to us. Tell us what you are making. We reply within 24 hours with a real assessment, not a brochure.

See the work. Real products, live in the world. Judge us by what shipped, not by what we promise.

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