An AI chatbot for a small business answers customer questions, captures enquiries and books appointments on your website or WhatsApp, at any time of day, using your own information. Small businesses in the UK have two real choices: subscribe to an off-the-shelf chatbot, or have a custom one built that connects to your own systems.
This guide explains what today's chatbots can and can't do, what each option costs, how to keep customer data safe under UK GDPR, and how to choose.
What an AI chatbot is today
Older chatbots followed scripts. They offered a menu of buttons and broke as soon as someone typed a question they weren't built for.
Today's AI chatbots run on large language models, the same kind of technology behind ChatGPT. Three things make one useful for a business:
- It understands plain questions, typed the way customers actually write them.
- It answers from your own information: your website, price lists, policies and FAQs. This is called retrieval-augmented generation, or RAG. It keeps answers grounded in your content instead of the model's general knowledge.
- It can take actions, such as adding a lead to your CRM, booking a slot in your calendar or checking an order, through connections to the systems you already use.
What an AI chatbot can do for a small business
- Answer questions at any hour. Prices, opening times, delivery, how a service works.
- Capture and qualify enquiries. Ask for the details your team needs, such as budget, timeline and location, and send them to your CRM or inbox.
- Book appointments. Offer real slots from your calendar and send confirmations.
- Handle routine requests. Order status, returns and rebooking.
- Hand over to a person. Pass the conversation to your team, with the history attached, when a question needs a human.
Where chatbots work well
- Trades and home improvement: collect project details and photos, then book a site visit.
- Property: answer questions about listings, qualify buyers and tenants, and schedule viewings.
- Online shops: product questions, order tracking, returns and delivery.
- Professional and local services: appointment booking, pricing questions and first enquiries.
- B2B and manufacturing: send specifications and documents, and route quote requests to the right person.
Where they struggle
A chatbot is only as good as the information behind it. If your website and documents are out of date, its answers will be too. AI models can also state something wrong with confidence, which matters most for prices, contracts and anything regulated.
Three habits keep that risk low: limit the chatbot to your own content, test it with real customer questions before launch, and make it easy to reach a person. Complaints, refunds and advice that carries legal or financial weight should go to a human.
Buy or build
Buy an off-the-shelf chatbot
For most small businesses, an off-the-shelf tool is the right place to start. You connect it to your website and help pages, and it's live within a day. Pricing is usually per conversation:
- Intercom's Fin AI agent costs from $0.99 per outcome, roughly each conversation it resolves, on top of an Intercom plan.
- Tidio's Lyro AI agent starts at $32.50 a month for 50 conversations, billed annually.
Both are published prices from the vendors' own pricing pages, checked in October 2026. Monthly costs grow with your volume, so estimate how many conversations you expect before you choose.
Build a custom AI chatbot
A custom chatbot makes sense when an off-the-shelf tool can't reach your systems or follow your processes. For example:
- it needs to read and update your CRM, booking system or stock
- it needs your own workflows, such as lead scoring or quotes
- it runs across several brands or channels, including WhatsApp
- your data is sensitive and has to stay on servers you control
A custom chatbot is priced as a project, based on the systems it connects to and how much it needs to do. Running costs include the AI model's usage fees, hosting and updates as your content changes.
What it costs to run a chatbot
Whichever route you take, budget for three things:
- Usage. Tools charge per conversation. Custom chatbots pay the AI provider per message, which is usually a few pence or less, depending on the model.
- Upkeep. Someone has to keep the information current: new prices, new services, new policies.
- Review. Read a sample of conversations every month to find wrong answers and gaps.
Customer data and the law
AI chatbots handle personal data, so UK GDPR applies. In practice:
- Tell people they're talking to an AI, at the start of the conversation.
- Say what you do with their data in your privacy notice, including which AI provider processes it.
- Collect only what you need, and delete it when you no longer need it.
- Check your provider's terms. Make sure customer conversations aren't used to train someone else's model unless you've agreed to it.
If you sell to customers in the EU, the EU AI Act has also required chatbots to tell users they're interacting with AI since 2 August 2026. Where data is sensitive, we can run open-source models on private UK servers, so it isn't shared with outside AI providers.
Choosing the best chatbot for your small business
The best chatbot for a small business is the simplest one that does the job. Before you choose, check that it:
- learns from your own website and documents
- connects to the tools you use, such as your CRM, calendar and email
- hands conversations to a person, with the history attached
- works on the channels your customers use, including WhatsApp if they message you there
- shows you reports on what people ask and where it fails
- lets you update its information without a developer
- meets UK GDPR, with clear terms on how conversation data is used
How to start
Pick one job first, such as answering your ten most common questions and capturing enquiries. Run it for a month and measure three numbers: how many questions it answers without help, how many it hands to your team, and how many enquiries it captures. Then add the next job.
How Exline Labs can help
If an off-the-shelf tool covers what you need, start there. If you need a chatbot that works inside your own systems, our AI consulting and development services cover it from the first audit to a live chatbot trained on your content and connected to your CRM. Not sure which you need yet? Our guide to AI consulting vs AI development explains where each fits, and the AI use cases for startups show what else is worth automating. Or book a free discovery call.
Frequently asked questions
How much does an AI chatbot cost for a small business in the UK?
Off-the-shelf AI chatbots charge by usage. Intercom's Fin starts at $0.99 per resolved conversation, and Tidio's Lyro starts at $32.50 a month for 50 conversations (October 2026 prices). A custom chatbot is priced as a project, depending on the systems it connects to.
Can a chatbot work on WhatsApp?
Yes. Through the WhatsApp Business Platform, a chatbot can answer questions and book appointments in WhatsApp. Meta charges for some types of business message, so check the costs for your volume.
Will a chatbot replace my staff?
No. It takes the repetitive questions, so your team spends its time on sales, complaints and anything that needs judgement.
Is an AI chatbot GDPR compliant?
It can be. Tell people they're talking to an AI, explain in your privacy notice how their data is used, collect only what you need and check your provider's terms on data use and storage.
Do I have to tell customers they're talking to an AI?
Yes, you should. Being open about it is part of using personal data fairly under UK GDPR, and for customers in the EU, the EU AI Act requires it.
How long does it take to set up a chatbot?
An off-the-shelf chatbot can be live within a day. A custom chatbot connected to your own systems takes longer, depending on how many systems it connects to.
