> ## Documentation Index
> Fetch the complete documentation index at: https://developer.hubmessage.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Billing

> Understand how the WhatsApp Official API billing model works

export const frontendUrl = 'https://app.hubmessage.io';

export const projectName = 'Hub Message';

## How does billing work?

Meta charges for use of the **WhatsApp Official API** based on **delivered template messages**. Regular messages exchanged within the support window are not charged by Meta per conversation. Rates vary depending on the template category and the recipient's country.

## What generates a charge

There is typically a charge when an **approved template** is sent.

**Examples:**

* Order confirmation
* Billing/collection
* Reminder
* Support recovery
* Marketing campaigns

## What does not generate a charge

Once the customer replies and the window is open, Meta does not charge for regular messages sent during that period.

**Examples:**

* Text messages
* Chatbot replies
* Agent messages
* Media sent
* AI messages
* Utility templates
* Templates sent within a window opened from a CTWA campaign

<Note>
  To better understand when the support window is open or expired, see the page on the [24-hour window](/en/whatsapp-official/24h-window).
</Note>