WhatsApp Business Account
Holds your numbers, usernames, and analytics, and the account Meta bills.
Glossary · WhatsApp Business API
Software talks on WhatsApp. The API is how.
The WhatsApp Business API is how software sends and receives WhatsApp messages on a business phone number, without a person typing them.
It has no screen of its own, so you reach it through a platform that has already connected to it.
Two things share a name. Only one is the API.
WhatsApp Business app
An app on a phone.
One person opens it and types.
WhatsApp Business API
A connection for software.
A platform you already use talks to it for you.
Both sit on a WhatsApp Business Account, or WABA: numbers, usernames, analytics, and Meta’s bill.
What you can send, and when.
Opt-in first, then three windows decide both the message and the Meta bill.
Within 24 hours of a customer message
What you can send
A free-form reply in your own words, or a utility template.
What Meta charges now
Free, including utility templates inside the window.
From 1 October 2026
Charged after 1,000 free service messages on that number each month, and in-window utility templates are charged too.
Meta bills your WABA, and your platform bills separately.
Sources, read 16 September 2026: Cloud API, pricing, messaging policy.
Related terms
Message template
Text Meta must approve before you start a conversation rather than reply.
Template category
Marketing, utility, or authentication: how Meta sets the rate.
Customer service window
24 hours after a customer messages you, free for free-form replies until 30 September 2026.
Free entry point window
72 hours of free messages of any type after a Click-to-WhatsApp ad or a Page button.
Tech provider
A platform already integrated with the API, listed in Meta's partner directory.
The API is the easy part. What happens after is the product.
Both run on the WhatsApp Business API.
The difference is what happens after the message lands.