Glossary
Meta's model that charges per 24-hour conversation rather than per individual message.
Conversation-based pricing is the way Meta bills for WhatsApp Business Platform usage. Instead of charging for each message, Meta charges for a conversation — a 24-hour session that opens when the first message is delivered and covers all messages exchanged in that window.
Rates vary by conversation category (marketing, utility, authentication, or service) and by the recipient's country, since carrier costs differ across markets. Marketing conversations are the most expensive; service conversations triggered by a customer's inbound message are often the cheapest or free within free-tier allowances.
Understanding these categories and country rates is essential for forecasting WhatsApp costs, because the same template sent to two different countries can cost very different amounts.
Your WhatsApp bill is driven by conversation category and country, not message count — so getting categories right directly controls cost.
Defuser AI passes Meta's per-conversation fees through transparently with a 30+ country calculator, so you see real costs before sending — on top of the WhatsApp Business API.
Meta's model that charges per 24-hour conversation rather than per individual message.
Your WhatsApp bill is driven by conversation category and country, not message count — so getting categories right directly controls cost.
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