WhatsApp AI Chatbot Development in India

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A custom AI chatbot on your WhatsApp number: how it works, what Meta charges as of October 2026, build cost, human handoff, and when a tool is enough.

Organisation: WavX Solutions
Telephone: +919310079927

Description

Service WhatsApp AI chatbot development

WavX builds AI chatbots on the WhatsApp Business Platform that answer from your own information in English, Hindi and Hinglish, act on your systems, and pass the chat to a person when needed. As of October 2026 Meta charges nothing for free-form replies inside the 24-hour window a customer opens; it charges per delivered template message.

Talk to a technology expert Last updated 2 October 2026

What it is

A WhatsApp AI chatbot answers customers on your business number in ordinary language. It reads the message, finds the answer in your own information, replies in the customer's language, and can do things in your systems: check an order, book a slot, create a lead, share a payment link. When it should not answer, it passes the chat to a person.

It runs on the WhatsApp Business Platform through Meta's Cloud API, not on the WhatsApp Business app on a phone. Setting up the number, the Meta business account and the message templates is covered on the WhatsApp Business API integration page. This page is about the AI on top of it.

How it works

Drawn as a diagram, one message travels through eight steps:

The customer sends a message to your number.

Meta delivers it to your server as a webhook .

The server identifies the customer by phone number and loads the conversation so far and any CRM record.

The message type is handled. Text and button taps are read directly. Images and documents are stored. Voice notes need speech-to-text first, if you choose to support them.

Language and intent are detected. If the customer has asked for a person, or the topic is on your handoff list, the chat goes to step 8.

The answer is prepared. Relevant passages are fetched from your documents ( retrieval-augmented generation ) and sent with the question and the instructions to the model.

The reply is checked and sent through the Cloud API as a free-form message, with buttons or a list where they help.

Handoff. The conversation appears in your team's inbox or helpdesk with its history. The bot stays silent on that chat until a person releases it.

Every step is logged, so a wrong answer can be traced to the message, the passages and the reply.

The rules Meta sets, and what they mean for the bot

A WhatsApp bot is built inside Meta's rules. These are the ones that shape the design, as Meta's documents state them in October 2026.

Rule

What Meta says

What it means for the build

Customer service window

You may reply without a template within a 24-hour window, "which opens and resets with each user message"

The bot can talk freely while the customer is active. After 24 hours of silence it cannot send a free-form message

Templates

"Template messages are the only type of message that can be sent to WhatsApp users outside of a customer service window", and a template must be approved before use

Reminders, order updates and follow-ups are written and approved in advance. The model does not compose them on the spot

Opt-in

You may contact people only if they gave you their number and opted in to receive messages from you

Opt-in is captured at checkout, on forms or in the first chat, and stored

Human escalation

Automation is allowed, but you "must also have available prompt, clear, and direct escalation paths", such as human agent transfer in the chat, a phone number, email or a support form

Handoff is a requirement, not a feature to cut for budget

AI providers

Meta's terms bar AI providers from the platform where the AI is "the primary (rather than incidental or ancillary) functionality" being offered

A bot that serves your own customers about your own business is the intended use. A general-purpose assistant on WhatsApp is not, so the bot is kept to your topics

Both the terms and the messaging policy were last updated on 23 September 2026. Read the current versions before launch, because they change.

What Meta charges

As of October 2026 Meta's pricing documentation states:

Pricing has been per message since 1 July 2025. Guides that describe per-conversation fees describe the older model.

You are charged only when a template message is delivered. All non-template messages are free.

Utility templates delivered inside an open customer service window are free. Marketing templates are always charged.

Rates depend on the template's category and the country calling code of the recipient. Meta publishes rate cards in INR, and the current ones took effect on 1 July 2026. Its change log records a higher marketing rate for India from 1 January 2026.

When a customer arrives from a click-to-WhatsApp ad or a Page button and you reply within 24 hours, a free entry point window opens and stays open for 72 hours.

Message

Who starts

Meta's charge

Bot's free-form reply within 24 hours of the customer's last message

Customer

None

Utility template inside an open window, such as an order confirmation

Business

Utility template outside the window, such as a delivery update next day

Per message, utility rate

Marketing template, such as an offer or a win-back message

Per message, marketing rate, always

Authentication template, such as a one-time password

Per message, authentication rate

So for a support or sales conversation that the customer starts, Meta's fee is nil. The cost of that conversation is model usage and hosting. Meta's fees enter when you message first. This page prints no rupee rates because Meta revises them: read the INR rate card linked from Meta's pricing page. A WhatsApp tool that sits between you and Meta adds its own subscription or markup.

What it costs to run

Cost

Paid to

What drives it

Template messages