WhatsApp chatbots explained: how they work and what they cost

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If your team spends a lot of time answering the same questions on WhatsApp, a chatbot could take some of that work off their hands.

A WhatsApp chatbot can automatically respond to customer messages, answer frequently asked questions, collect information, qualify leads and even connect with other business systems.

And they don’t all have to be complicated. Some WhatsApp chatbots follow simple pre-written flows, while others use AI to understand free-text questions and have much more natural conversations.

So, how do WhatsApp chatbots actually work, what can they be used for, and how much do they cost?

What is a WhatsApp chatbot?

A WhatsApp chatbot is an automated system that communicates with customers through WhatsApp.

Instead of a member of your team manually responding to every message, the chatbot can handle certain conversations automatically based on how it has been designed.

There are two broad types of WhatsApp chatbot –

Rule-based chatbots follow predefined rules and conversation flows. For example, a customer might be presented with a menu:

How can we help?

Make a booking
Check an existing booking
Ask a question
Speak to a member of the team

The customer selects an option and the chatbot follows the relevant path.

AI-powered chatbots are more flexible. Rather than requiring customers to choose from a set menu, they can understand free-text questions and respond based on the information they’ve been given.

For example, a customer could ask:

“What time does the festival start on Saturday and where can I park?”

An AI chatbot can identify what the customer is asking and provide the relevant information, rather than requiring them to find it through a series of buttons.

WhatsApp chatbots run on the WhatsApp Business Platform, using the WhatsApp Business API to connect WhatsApp with the chatbot and other systems. If you want to understand the technology behind this in more detail, see our WhatsApp Business API explained guide.

The important thing is that a chatbot doesn’t have to replace your customer service team. It can deal with straightforward or repetitive questions, while giving customers a route through to a human when they need one.

How do WhatsApp chatbots actually work?

A WhatsApp chatbot sits between your customer and the information or systems it needs to answer their question.

A simple interaction might look like:

Customer sends a WhatsApp message → chatbot processes the request → chatbot finds the relevant information → customer receives an answer

More sophisticated chatbots can also connect with your existing business systems, allowing them to do more than simply provide information.

Handling different types of questions

A chatbot needs to be able to recognise what a customer is trying to do before it can provide the right response.

With a rule-based chatbot, this might mean matching a customer’s choice to a predefined journey. With an AI-powered chatbot, it could mean interpreting the intent behind a free-text question.

For example, someone might ask:

“Where are you based?”
“What’s your address?”
“How do I get to you?”

An AI chatbot can recognise that these questions are asking for the same basic information and provide the appropriate response.

Handing conversations over to humans

A good WhatsApp chatbot should know when not to answer.

If a question is outside the chatbot’s scope, or a customer specifically asks to speak to someone, the conversation can be handed over to a human agent.

This is particularly important for customer service. Automation should remove repetitive work, not create another barrier between customers and your team.

The aim is to let the chatbot handle straightforward conversations while your team focuses on the ones that genuinely need human input.

Connecting to your existing systems

WhatsApp chatbots can also connect to other business systems.

Depending on what you’re trying to achieve, that could include your –

CRM
Booking system
E-commerce platform
Customer service or helpdesk software
Recruitment system
Marketing automation platform

This can allow a chatbot to do more than just answer questions. For example, instead of telling a customer how to make a booking, an integrated chatbot could potentially check availability or help them through the booking process.

What can businesses use a WhatsApp chatbot for?

The potential applications depend on your business and the systems you already use, but there are some common use cases.

Answering FAQs 24/7

One of the simplest uses for a WhatsApp chatbot is answering frequently asked questions.

Opening times, pricing, locations, availability, parking, delivery information and other common queries can often be handled automatically.

This is particularly useful outside normal working hours, when customers still expect quick answers.

Booking and appointment confirmations

Businesses can use WhatsApp to support customers before, during and after a booking.

For example, a chatbot could –

Confirm a booking
Send reminders
Answer questions about the appointment
Provide directions or preparation information
Help customers change or cancel a booking

For hospitality and leisure businesses, this can provide a convenient way to keep customers informed without adding more work for the front-of-house team.

Order tracking and delivery updates

For e-commerce businesses, customers often have straightforward questions about where their order is.

Rather than requiring someone to check the system manually, an integrated chatbot could provide delivery updates or direct customers to the relevant information.

This is a good example of where connecting the chatbot to other business systems can make a big difference.

Lead qualification

WhatsApp chatbots can also help sales teams qualify enquiries before passing them on to a person.

For example, a chatbot could ask a potential customer –

What service are you interested in?
What type of business are you?
What are you looking for help with?
When are you hoping to get started?

The information can then be passed to the sales team, meaning they have useful context before starting the conversation.

Customer service automation

Perhaps the biggest opportunity is simply reducing the amount of repetitive work your customer service team has to handle.

If your team receives hundreds of messages asking the same handful of questions, there’s a good chance some of those conversations could be automated.

This doesn’t mean every interaction needs to become automated. Instead, WhatsApp customer service automation can deal with the predictable questions while your team concentrates on more complex or sensitive conversations.

Keeping event audiences informed

Events are another particularly useful application.

For Brit Fest, we built an AI-powered WhatsApp channel that allowed fans to get information directly through WhatsApp throughout the festival.

The channel handled more than 117,000 conversations, with 100% of queries resolved without human intervention. More than 90% of conversations took place through WhatsApp, with announcements achieving open rates of up to 98%.

You can read the full Brit Fest case study to see how it worked in practice.

WhatsApp chatbots and the wider shift to chatbot automation

WhatsApp isn’t the only place where businesses are using chatbots.

Chatbot automation is increasingly being used across different digital channels, including websites, Messenger and SMS. The principle is broadly the same: use automation to handle repetitive conversations and make it easier for customers to get information or complete simple tasks.

The advantage of WhatsApp is that the conversation happens somewhere many customers already spend their time.

For businesses with an established WhatsApp audience, that can make it a particularly useful channel for automated customer service, marketing and support.

What does a WhatsApp chatbot cost?

There’s no single price for a WhatsApp chatbot. The cost depends on what you want it to do, how complex the conversation flows are and which systems it needs to connect to.

There are generally three areas to consider.

WhatsApp Business Platform costs

First, there are the costs associated with using the WhatsApp Business Platform itself.

These depend on factors such as the type and volume of messages you’re sending. If you’re using a third-party provider, there may also be provider fees.

These costs are separate from the cost of building the chatbot itself.

The chatbot build

Then there’s the initial development work.

A simple rule-based chatbot with a handful of predefined conversation flows will generally be less complex to build than an AI-powered chatbot connected to a CRM, booking platform or other business systems.

The more you want the chatbot to do, the more planning, development and testing is likely to be involved.

Ongoing support and optimisation

A chatbot shouldn’t be built and forgotten about.

Customer questions change. Your services change. Your website content changes. And you’ll learn more about what customers actually ask once the chatbot is being used. Ongoing monitoring and optimisation can help keep the experience useful and make sure customers are getting the right answers.

Rather than looking only at the upfront cost, it’s worth considering the amount of team time the chatbot could save.

If your customer service team is spending hours every week answering questions that could be automated, that time has a cost too. For Brit Fest, we estimated a customer service labour cost saving of over £350k!

Is a WhatsApp chatbot right for your business?

A WhatsApp chatbot could be worth considering if –

Your team receives a high volume of repetitive WhatsApp enquiries
Customers regularly ask the same questions
You need to provide support outside normal working hours
Your business has lots of bookings, orders or enquiries to manage
You’re already using the WhatsApp Business API
You have CRM, booking or customer service systems that could benefit from integration
Your team is spending too much time on straightforward customer queries

You don’t necessarily need thousands of conversations before automation becomes useful. Even a relatively small number of repetitive enquiries can add up if your team is dealing with them manually.

The key question is less about how many WhatsApp messages you receive and more about how many of those messages could be handled without a member of your team needing to get involved.

How Ultimate can help

A WhatsApp chatbot is only useful if it makes the customer experience better and genuinely saves your team time.

At Ultimate, we design and build WhatsApp and automated agent solutions around the way your business actually works. That can include simple automated journeys, AI-powered chatbots, CRM integrations and more complex customer service automation.

We can help you identify where automation makes sense, design the conversation and connect it with the systems you already use.

Find out more about our WhatsApp & Automation services or see our Brit Fest case study to see what a WhatsApp chatbot can do at scale.

If WhatsApp is part of a wider digital transformation project, you can also explore our SEO & Digital services.

Or, check out our full guide to WhatsApp for Business.

Talk to us