Understanding the WhatsApp conversation-based pricing (CBP) can be a bit tricky at first. But once you have a clear picture of how the pricing model works, it's easy to see the benefits. Check out the below examples and discover why Conversation-Based Pricing is far more cost-effective than per-message pricing.

Assume a user initiates a conversation at 11 AM on a Monday, opening the 24-hour session window.
 
The business texts back at 5 AM on Tuesday. Since the business responded within the 24-hour session window, it will only pay for one user-initiated conversation, beginning at 5 AM on Tuesday.
 
Now, imagine the business once again sends a message to the user at 3 PM on Tuesday. Keep in mind that the business texted within 24 hours of the user-initiated conversation that started at 5 AM on Tuesday. So, the business will not pay anything for the 3 PM message.
 
The user next responds at 2 PM on Wednesday. In this case, the user has responded after the 24-hour conversation window has closed.
 
Now, if the business wants to continue the conversation, it will have to pay. If you guessed that it will pay for one more user-initiated conversation (UIC), you guessed right. The UIC session window will stay open for 24 hours after the user's message.

Assume that a business initiates a conversation at 9 AM on a Monday with a Meta-approved template message. In this case, the business will pay for 1 BIC (business-initiated conversation) and the 24-hour conversation session window will open at the time the message is sent.
 
Say the user responds at 11:30 AM on the same day. Will the business have to pay for 1 UIC? No, the business will only pay for 1 BIC, because the user responded within the 24-hour session window.
 
Imagine the business responds to the user the following day at 10 AM (Tuesday). Now, it's been more than 24 hours since the business initiated the conversation.