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WhatsApp now charges for replies to customers. What changes if an AI agent answers them

Since 1 October, the WhatsApp Business API charges for service messages above 1,000 a month on each number. If an AI agent handles your support, the way it replies now shows up on the bill.

Speech bubble with a message counter in dark lines on a light background, beside the glass form with a blue core

For almost two years, replying to a customer through the WhatsApp Business API within 24 hours cost nothing. That changed on 1 October 2026.

What Meta changed

According to Meta's pricing documentation, service messages are billable again. These are the replies sent within the 24-hour window that opens when a customer writes.

  • Each WhatsApp number gets 1,000 free service messages a month. Charges start at the 1,001st, and unused messages do not roll over.
  • Utility messages sent while the window is open, such as order confirmations, are now charged too.
  • Without a payment method on file, Meta delivers messages within the free tier and stops once it runs out.
  • Conversations that start from Click-to-WhatsApp ads, opened in the mobile app, keep a free window of up to 7 days, as long as the business replies within 24 hours.
  • Messages customers send to the business remain free.
Timeline in which the customer writes, the 24-hour window opens, the first 1,000 replies of the month are free and charges start from the 1,001st

Rates vary by country and message type and can change each quarter. If you use a customer service platform or a BSP, also check how your contract passes these costs on.

Why it weighs more on AI agents

A person usually replies in one or two messages. Many AI agents split the answer into several bubbles, send "one moment, let me check" before the answer, and confirm every step. That never showed up on the bill. Now every bubble counts.

In a month with 300 conversations averaging six messages each, that is 1,800 messages and the business goes over the free tier. At three messages per conversation, it is 900 and stays within it.

Five changes worth making now

  1. Reply in one complete message instead of several short bubbles.
  2. Drop holding messages when the answer arrives within seconds.
  3. Group related information, such as order status, delivery time and tracking link, in the same message.
  4. Track messages per conversation and per number, so you know when the free tier will run out.
  5. Use Click-to-WhatsApp ads in campaigns to benefit from their free window.

There is another rule in force since January. Meta restricted general-purpose AI assistants on the API, such as ChatGPT on WhatsApp. A company's own support, sales and service agents are still allowed.

Fewer messages, same service

Saving messages should not make support worse. The goal is for each message to do more.

In the WhatsApp AI agent we build, we agree reply length and format with your team and track how many messages each conversation uses. The bill stays predictable and the customer gets the full answer in one go.