Are WhatsApp group messages charged per member?

Yes, on the Groups API. Meta charges each time a billable message is delivered to a member of the group, at that member's country rate.

• Meta's example: a marketing template delivered to all 5 members is 5 charges. Delivered to only 4, you pay for 4.
• Each member's country calling code sets that member's rate, so a mixed group can cost a different amount per member.
• From 1 October 2026 normal (non-template) group messages use the shared 1,000 free service messages a month, one unit per delivered member, then are charged.
• The Groups API needs an Official Business Account and a number used with the Cloud API, not the Business app. Groups are invite-only.
• Groups in the free WhatsApp Business app carry no per-message fee.