WhatsApp AI chatbot for business: how it works and what it costs

A WhatsApp AI chatbot for business is an assistant that answers your customers on your WhatsApp business number, using your own product information and policies. It can reply at any hour, collect details, book appointments and pass the conversation to a person. It suits businesses whose customers already message them on WhatsApp, which in much of the world is most of them.

What a WhatsApp AI chatbot for business can do

• Answer common questions about prices, stock, opening hours and delivery
• Share a catalogue item, a location or a document
• Qualify a lead by asking a few questions
• Book, move or cancel an appointment
• Look up an order status, if connected to your store
• Send confirmations and reminders
• Hand the chat to a member of staff with the history attached

The WhatsApp Business app is not enough

There are two WhatsApp products for businesses, and the difference matters.

An AI chatbot needs the Business Platform, usually just called the WhatsApp API.

What you need to set one up

1. A Meta Business account, verified with your business documents.
2. A phone number for the chatbot. A number already used in the WhatsApp app has to be moved over.
3. Access to the API, either directly from Meta or through an approved provider.
4. Something to run the chatbot. This is where the AI, your content and your systems are connected, for example an n8n workflow.
5. Your content. The questions customers ask and the correct answers.
6. A shared inbox so staff can take over a conversation.

Verification is the step that most often causes delay, so start it early.

How Meta charges

Meta sets the fees and changes them from time to time, so check its current pricing page. The general model at the time of writing is:

• Replies to customers are free. When a customer messages you, a 24-hour window opens in which your replies are not charged.
• Messages you start are charged. To contact someone outside that window you must use a pre-approved template, and each one is charged at a rate that depends on its type and the customer's country.

A chatbot that mostly answers incoming questions therefore has low message costs. Your other running costs are AI usage and the platform the chatbot runs on.

Rules you have to follow

• Consent. People must agree to receive messages from you on WhatsApp.
• Templates. Messages sent outside the 24-hour window must use templates approved by Meta.
• A way to reach a person. Customers should be able to ask for a human.
• Use it for your own customers. Meta's rules allow AI that serves a business's own customers. General-purpose AI assistants distributed through WhatsApp are restricted, so read the current policy before building anything unusual.
• Quality. If many people block or report your number, Meta lowers your sending limits.

How to make it good

• Answer only from your content. The chatbot should say it does not know when the answer is not there.
• Keep replies short. WhatsApp is read on a phone. Two or three lines, then a question.
• Use buttons for common choices so people do not have to type.
• Hand over early when someone is unhappy or asks for a person.
• Reply in the customer's language. Modern AI models handle this well, including mixed languages.
• Review weekly. Read the questions it could not answer and add what was missing.

Is it worth it?

It is, when most of your enquiries arrive on WhatsApp, the same questions repeat and slow replies cost you sales. If you receive only a few messages a day, the free Business app with quick replies is enough.

If you are unsure whether you need a chatbot or something that takes actions, read AI agent vs chatbot. We build WhatsApp chatbots as part of our AI chatbot development services.