Get a bespoke AI chatbot trained on your own documents — built with OpenAI, LangChain and Pinecone by a London-based LLM development studio. Available 24/7, infinitely scalable, and tailored precisely to your business.
I Will Build a Custom AI Chatbot Using ChatGPT and LangChain
A focused 40-minute strategy session to explore your chatbot requirements and map the right solution.
- 40-minute one-to-one consultation session
- Requirements discovery and use-case mapping
- Architecture and tooling recommendations
- Guidance on document preparation and data sources
- Written summary of agreed next steps
A fully functional, production-ready custom AI chatbot built and delivered with two rounds of revisions.
- Everything in the Consultation tier
- Custom AI chatbot built with OpenAI API and LangChain
- Document ingestion and vector embedding via Pinecone
- Conversational interface tailored to your business
- Source code and deployment documentation delivered
- Two rounds of post-delivery revisions
A comprehensive, high-complexity chatbot build for larger document sets and more demanding use cases.
- Everything in the Boost Build tier
- Extended scope for larger or more complex document libraries
- Deeper customisation of conversational logic and responses
- Greater scalability built into the architecture from the outset
- Full source code, documentation, and handover notes
- Three rounds of post-delivery revisions
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Value Position
AI Tech Stack
Core Use Case
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What You'll Receive
Full Description
Your customers expect instant, accurate answers — around the clock. A custom AI chatbot trained on your own documents delivers exactly that, without the overhead of additional support staff.
Zinn Digital™ is a London-based development studio specialising in LLM applications built with the OpenAI API, LangChain, and Pinecone. Whether you need a document-aware chatbot for customer support, internal knowledge management, or product guidance, we architect solutions that are tightly scoped to your business requirements.
**What this service covers**
At the entry tier, you receive a focused 40-minute consultation. We use this time to map your requirements, explore the right architecture for your use case, assess your documents and data sources, and outline a clear delivery plan. This is the essential first step before any build begins — it ensures nothing is wasted and the solution fits your business precisely.
The Boost tier delivers a fully functional, production-ready AI chatbot: document ingestion, vector embedding via Pinecone, a conversational interface powered by OpenAI and LangChain, and two rounds of revisions to get everything exactly right.
The Premium tier expands the scope further — a more comprehensive build accommodating larger document sets, greater complexity, deeper customisation, and three rounds of revisions. This is the right choice for businesses that need a robust, scalable chatbot ready to handle real-world volume from day one.
**How it works**
1. You place your order and share details about your project via the order chat.
2. We review your requirements and align on scope.
3. For consultation orders, we schedule and conduct the 40-minute session. For build tiers, development begins immediately.
4. Deliverables are shared via a secure cloud link, with source code and documentation included.
**Who this is for**
This service suits businesses of any size that want to harness AI to improve customer engagement, reduce support load, or make internal knowledge instantly accessible. It is ideal for SaaS companies, professional services firms, e-commerce businesses, and teams managing large document libraries.
**Why Zinn Digital™**
Our expertise spans LLM application development, web development, web automation, and Chrome extensions — all under one roof. We work in TypeScript, use best-in-class tooling, and have deep hands-on experience with the OpenAI API, LangChain, and Pinecone. Every solution is bespoke; nothing is templated. We are based in London, England, and communicate clearly throughout every engagement.
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Compare Packages
| Feature | Consultation | Boost Build | Premium Build |
|---|---|---|---|
| Delivery Time | 3 days | 10 days | 14 days |
| Revisions | 0 | 2 | 3 |
| 40-minute one-to-one consultation session | ✓ | ✕ | ✕ |
| Requirements discovery and use-case mapping | ✓ | ✕ | ✕ |
| Architecture and tooling recommendations | ✓ | ✕ | ✕ |
| Guidance on document preparation and data sources | ✓ | ✕ | ✕ |
| Written summary of agreed next steps | ✓ | ✕ | ✕ |
| Everything in the Consultation tier | ✕ | ✓ | ✕ |
| Custom AI chatbot built with OpenAI API and LangChain | ✕ | ✓ | ✕ |
| Document ingestion and vector embedding via Pinecone | ✕ | ✓ | ✕ |
| Conversational interface tailored to your business | ✕ | ✓ | ✕ |
| Source code and deployment documentation delivered | ✕ | ✓ | ✕ |
| Two rounds of post-delivery revisions | ✕ | ✓ | ✕ |
| Everything in the Boost Build tier | ✕ | ✕ | ✓ |
| Extended scope for larger or more complex document libraries | ✕ | ✕ | ✓ |
| Deeper customisation of conversational logic and responses | ✕ | ✕ | ✓ |
| Greater scalability built into the architecture from the outset | ✕ | ✕ | ✓ |
| Full source code, documentation, and handover notes | ✕ | ✕ | ✓ |
| Three rounds of post-delivery revisions | ✕ | ✕ | ✓ |
Portfolio
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Build a Custom AI Chatbot Using ChatGPT and LangChain
Build a Custom AI Chatbot Using ChatGPT and LangChain
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Frequently Asked Questions
For the Boost and Premium build tiers, we strongly recommend getting in touch via the order chat before placing your order so we can confirm scope and ensure the right tier is selected. For the Consultation tier, you can order directly and we will co-ordinate scheduling through the order chat.
We work with a wide range of document formats including PDFs, Word documents, plain text files, spreadsheets, and web-based content. Once you place your order, please share as much detail as possible about your documents and what you need the chatbot to know. We will guide you through any preparation steps.
For build tiers, you receive the full source code, deployment documentation, and a cloud link to access and review the deliverables. The Consultation tier includes a written summary of the session and agreed next steps.
We build using the OpenAI API (ChatGPT), LangChain for orchestration, and Pinecone for vector storage and document retrieval. The codebase is written in TypeScript. If you have specific infrastructure requirements, please mention them when you place your order.
After delivery, you review the chatbot and provide consolidated feedback. Each revision round covers one set of changes. The Boost Build includes two rounds and the Premium Build includes three rounds. Additional revision rounds can be purchased as an add-on.
The Boost Build is delivered within 10 days and the Premium Build within 14 days of project kick-off. Complexity, document volume, and how quickly you provide materials can all affect timelines. We will confirm a realistic schedule once we have reviewed your requirements.
Yes. Integration options depend on your existing setup. Please describe your website or platform when you place your order and we will advise on the best integration approach during scoping.
Customer Reviews
See what our customers say about this Zinn
Working with Younes exceeded my expectations. He is very knowledgeable and knows how to quickly trouble shoot problems as they arise. The final product was exactly what I was envisioning for my project. He even helped me troubleshoot some things after we were done working together. Definitely using his service again.
Very professional, will work again for sure!
I was very impressed with what was built for my company. I would definitely recommend him and I hope to work with him again soon.
Overall, it's been a great experience with continued engagement and collaboration on projects.
Working with Youness has been an exceptional experience. His professionalism and dedication were evident at every stage of the project. He perfectly understood my needs for creating a public speaking simulator and delivered work of remarkable quality, with impressive attention to detail. Communication was smooth and responsive, which allowed me to follow the progress without any worries. Youness also demonstrated great creativity and a deep understanding of the field, which added real value to the project. Delivery was on schedule, and the final result exceeded my expectations. I highly recommend Youness to anyone looking for a reliable, competent, and passionate expert.
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