The short answer
A WhatsApp AI assistant is connected to a business number on the WhatsApp Business Platform. When a customer writes or sends a voice note, the assistant reads it, answers from the business's approved information, books or notes the request, and passes the conversation to the team when a person is needed. Messages the business starts on its own, such as reminders, follow WhatsApp's rules for templates and customer permission.
The app and the platform are not the same thing
WhatsApp offers businesses two different products. The WhatsApp Business app is the free phone app a shop owner installs and answers by hand, with a few labels and quick replies. The WhatsApp Business Platform is the version made for software: it lets a business connect its number to systems that receive and send messages automatically, share one number across a team and record every conversation.
An AI assistant runs on the platform, usually through a provider that handles the connection to Meta. Moving a number onto the platform is a step to plan with that provider, because it changes how the number is used day to day. Customers notice nothing: they keep writing to the same kind of WhatsApp conversation they already know.
Who starts the conversation matters
WhatsApp treats conversations differently depending on who starts them. When a customer writes first, the business can answer freely during a service window that follows the customer's latest message; Meta currently sets that window at 24 hours. This is the space where an AI assistant does most of its work: answering, asking a follow-up question, proposing a time, confirming.
When the business wants to write first, or to write again after the window has closed, it must use a message template: a pre-written message, with blanks for details such as a name or a time, that Meta reviews before it can be sent. Appointment reminders and confirmations are typical examples. Meta sorts templates into categories, such as utility, marketing and authentication, and handles each category under its own rules. Those rules change from time to time, so a good provider keeps them current for you.
Permission and the right to say stop
Before a business sends messages it starts, the customer must have agreed to receive them, for example when booking or when giving their number for reminders. The permission should be clear about what kind of messages will follow. Customers can block or report a business at any time, and Meta watches those signals: numbers that people often block or report can see their sending limited.
In practice, the respectful setup is also the safe one. Send what the customer expects, such as the reminder they agreed to, and stop the moment someone asks. A well-built assistant recognises a request to stop in any wording and records it, so nobody on the team sends that person another message by mistake.
Voice notes, photos and every language
On WhatsApp, many customers would rather speak than type. A capable assistant transcribes each voice note, understands it like a written message and answers in writing, which also leaves a clear record for the team. People also send photos and documents: a screenshot of an advert, a picture of a room they liked, a scanned form. The assistant can acknowledge them and attach them to the request so a person can review them.
Language is where WhatsApp assistants shine. Customers write the way they speak: dialect in Arabic or Latin letters, French mixed with English, short messages with no punctuation. Modern language models follow the person who writes and reply in the same language and register, while keeping the tone the business chose.
Handing the conversation to the team
Some messages should reach a person quickly: a complaint, a negotiation, a delicate personal situation, a request the business never approved the assistant to handle. The business sets these rules at the start. When one applies, the assistant tells the customer that a colleague will take over, and the conversation appears for the team with a short summary of the request.
From there, a person can answer from the team's own tools while the assistant steps back. The customer stays in the same WhatsApp thread throughout, with the whole history visible to the team, so nobody has to ask the same question twice.
Calls on WhatsApp
Customers also call businesses through WhatsApp, often from abroad, because it costs them nothing extra on their data plan. A call that rings out is a lost request unless something happens next. The simplest response is an instant written reply after a missed call, inviting the customer to write their question. Some systems go further and answer WhatsApp calls live, by voice, with the same knowledge and rules as the written assistant.
A concrete example: Nolloi
Nolloi's standard plans are built on WhatsApp. The assistant answers messages and voice notes at any hour in the customer's language, sends an instant reply after a missed WhatsApp call, books inside the business's availability with the reminders it chose, and files each request in the team app, where a person can take over. Live answering of WhatsApp calls is part of the Business OS and Prestige plans.
Questions
Do my customers need to install anything?
No. They use WhatsApp exactly as they already do. The assistant works on the business side, behind the business's number.
Can the assistant send messages first?
Only within WhatsApp's rules: with the customer's permission and through templates that Meta has reviewed, such as an appointment reminder. Most of an assistant's work happens inside conversations the customer started.
Does it understand voice notes in dialect?
Current speech models handle a wide range of languages and dialects, including Moroccan Darija. The assistant transcribes the note, answers in the customer's language, and passes anything unclear to a person rather than guessing.
Can my team still answer on WhatsApp?
Yes. A person can take over any conversation at any time. The assistant hands over automatically in the cases the business chose and steps back while a person is answering.
Who sees the conversations?
The business and the members of its team who have access. Ask any provider where the messages are stored, who on their side can read them, and whether your customers' messages serve only your own assistant.