本篇文章主要对WhatsApp API 相关费用进行说明。
一、基于对话的定价
对于使用 WhatsApp Business 开放平台的商家，我们会根据对话向商家收费，其中包括 24 小时会话期内送达的所有消息。详情请参阅 WhatsApp Business 商业帐号账单简介。
运作方式
WhatsApp Business 开放平台的对话分为两类，两者定价有所不同：
•用户发起的对话：为响应用户消息而发起的对话。商家每次在 24 小时客户服务窗口期内回复用户时，相应消息都会被计为一次用户发起的对话。在此 24 小时客户服务窗口期内，商家可以发送任意形式的消息。
•商家发起的对话：商家在 24 小时客户服务窗口期外向用户发送消息时所发起的对话。在由商家发起的对话中，需为消息采用消息模板。
我们会在固定的 24 小时会话期内统计所有对话。无论对话是由商家发起还是用于回复用户消息，对话均会在其中的第一条商家消息送达后开启。商家和用户可以在 24 小时对话期内互发任意数量的消息（包括模板消息），而不产生额外费用。每个 24 小时对话期只会产生一次费用。
对话费用视用户的国家/地区代码而定。此处所说的用户指的是与商家沟通的客户。商家发起的对话和用户发起的对话的费率因国家或地区而异。
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