Meta started charging for WhatsApp “service messages” — free-form replies written by a human agent or a third-party AI tool inside the 24-hour customer service window — on October 1, 2026, as scheduled. The change ends a free period that began in November 2024; Meta published the exact per-market rates on September 1, 2026, on schedule with the pricing calendar it announced in July.
What changed
Per Meta’s developer documentation, a service message is any non-template reply “powered by a person, like a customer service representative, or by a 3rd-party AI solution.” Since October 1, each one is billed per message at the same rate Meta already charges for utility and authentication template messages in that market — Meta’s own pricing page lists “Volume tiers: None” for service messages, so there is no free monthly allowance.
Utility messages sent inside that same 24-hour window lost their free status too, after being free since July 2025. Only one charge applies per message, and replies inside the always-free 72-hour window that opens from a Click-to-WhatsApp ad or a Facebook call-to-action button remain unbilled.
The deadline that mattered most came earlier: Meta’s documentation states that any Solution Provider or directly integrated business that still had no payment method on file by September 30, 2026 had its service messages stopped the moment billing began on October 1.
Why this matters for Thai sellers and support teams
Thai SMEs that use WhatsApp through a provider like 1CS to let AI answer repetitive questions and hand off harder cases to a person are now billed for both — a human reply and an AI reply fall under the same “service message” category. With no volume tier, cost scales directly with reply volume, not just with how many customers message in.
Any business that had not attached a payment method to its WhatsApp Business Account by September 30 risks having gone silent on October 1, since Meta’s documentation says it stops delivering service messages the moment charging begins for an account without billing set up.
What to do now
- Confirm a payment method is on file right now for every WhatsApp Business Account, in the Meta Business Suite billing hub — Meta’s documentation says this is the only way to restore service messages that were cut off.
- Check your first October invoice or usage dashboard against current reply volume times Thailand’s existing utility/authentication message rate, since that rate now applies to every human and AI reply too.
- Route more conversations to start from Click-to-WhatsApp ads or Facebook CTA buttons, since replies inside that 72-hour entry window stay free regardless of who — or what — answers.
- Ask your BSP or inbox provider exactly how this charge is appearing on your invoice, and confirm no service messages were interrupted at the cutover.
If you already run a unified LINE and Facebook inbox, check that WhatsApp’s new billing is tracked separately. And if AI is answering the repetitive share of these chats, getting the handoff point between AI and a human right now controls both answer quality and cost per message.
