Pricing on the WhatsApp Business Platform | Developer Documentation

Understand WhatsApp message costs with ChatArchitect

ChatArchitect bills you for the WhatsApp Business API service. You do not pay Meta separately for messages sent through this connection. Check your current ChatArchitect plan and contract for the base price. Service replies above Meta's monthly 1,000-message allowance are charged separately by ChatArchitect; ask support for the applicable rate and billing terms.

What affects the price

Start with your ChatArchitect plan: check its monthly fee, included usage, and any charges that apply after the included amount. The plan terms determine your bill.

Meta's underlying message rates depend on the recipient's country calling code and message category. The categories include marketing, utility, authentication and, since October 2026, service messages after Meta's monthly allowance. Meta may apply volume tiers to utility and authentication messages. See Meta's current FAQ and rate table for platform rules; use your ChatArchitect plan for the price payable to ChatArchitect.

Meta charges for a billable message when it is delivered, not when a request is merely accepted. If you use a direct ChatArchitect integration, check the final delivery status as described in the ChatArchitect API quick start.

Service replies and Meta's monthly allowance

Since October 1, 2026, Meta charges for service messages on the WhatsApp Business Platform after the first 1,000 service messages per business phone number each month. These replies are still sent within the open 24-hour customer service window. ChatArchitect charges service replies above that allowance separately from the base subscription. The allowance counts messages, not active customers or 24-hour conversations. Read Meta's current FAQ for the platform rule and ask ChatArchitect support for the rate that applies to your plan. For utility templates, check the current Meta rules and your plan before assuming a message is free.

Meta also has a free entry point for qualifying conversations started through an ad that clicks to WhatsApp or a Facebook Page button. See Meta's current pricing page for the conditions and duration; do not assume that every incoming conversation qualifies.

Estimate a campaign

1. Choose the plan and billing period on the ChatArchitect pricing page.
2. Estimate the destination countries, the number of messages you expect to deliver, and the categories you will use, including service replies.
3. Check your plan's included usage and any additional charges. If you expect more than 1,000 service replies per business number in a month, include the separate ChatArchitect charge at the rate confirmed by support. Use Meta's FAQ to understand the platform allowance, not as a substitute for your ChatArchitect price.
4. If you are unsure which category a template has, check its approved category before sending. Create and review your templates first.

For a first sending test, follow Send your first WhatsApp message with ChatArchitect.

If your quote or spreadsheet still uses 24-hour conversation rates, follow the old cost estimate checklist to separate historical conversations, delivered messages and your plan allowance.