Key points
- WhatsApp AI customer service usually connects through the WhatsApp Business Platform (API). The AI answers common enquiries based on your company information and hands over to staff when needed.
- Set-up has four broad steps: understand your enquiries, build a knowledge base, set up and test, then launch and train.
- Costs include a one-off set-up fee plus an ongoing system fee, Meta messaging fees (per Meta's published rates) and AI usage. The most common misconception is that AI can replace people entirely.
What is WhatsApp AI customer service?
WhatsApp AI customer service is an automated reply system connected to your company's WhatsApp account. When a customer sends a message, the AI replies in natural language based on information your company provides, such as opening hours, services, prices and how to book. For questions outside that information, the conversation is handed to a member of staff.
It differs from traditional keyword auto-replies: customers do not need to type specific words, because the AI understands the same question asked in different ways. Its answers should still be limited to your company information.
WhatsApp Business App vs WhatsApp Business Platform
WhatsApp offers businesses two options, and AI customer service generally needs the Business Platform. The main differences (features and pricing per Meta's official information):
| Aspect | WhatsApp Business App | WhatsApp Business Platform |
|---|---|---|
| Best for | Low volume, replies handled by the owner or a few staff | High volume, automated replies or several staff |
| Automated replies | Basic greeting, away messages and quick replies | Can connect to AI or other systems to understand and reply |
| Integrations | Limited | Can connect to CRM, booking systems and more |
| Cost | The app itself is free | Meta charges messaging fees at its published rates |
The set-up process
- Understand your enquiries: gather common questions such as opening hours, prices, location and booking, and list the cases that must go to a person, such as complaints or refunds.
- Build the knowledge base: organise answers to common questions and your company information into a knowledge base, checked by the person responsible. The AI answers based on this.
- Set up and test: connect the WhatsApp Business Platform, set hand-over rules and test with real questions, including deliberately out-of-scope ones.
- Launch and train: go live and show staff how to handle hand-overs and update the information.
What the costs are made of
Costs fall into one-off and ongoing items:
| Item | Type | Notes |
|---|---|---|
| Set-up fee | One-off | Reviewing enquiries, building the knowledge base, set-up and testing. HKONE's Starter plan starts from HK$8,800. |
| WhatsApp messaging fees | Ongoing | Charged by Meta at its published rates, depending on message type and volume. Meta's official information applies. |
| System fee | Ongoing | System operation, maintenance, knowledge base updates and technical support. HKONE plans start from HK$1,800 per month. |
| AI usage | Ongoing | AI models are billed by usage, which depends on enquiry volume. On HKONE plans, extra AI usage is charged separately. |
When comparing quotes, check whether ongoing costs are included and in whose name they are paid.
Common misconceptions
| Misconception | Reality |
|---|---|
| The AI will make up answers | A properly set-up system answers based on your company information and hands everything else to a person. |
| AI can replace people entirely | AI suits repeated common questions. Complaints and price negotiations still need a person. |
| Once set up, it needs no attention | When prices, services or policies change, the knowledge base must be updated. |
| It is better not to tell customers it is AI | Labelling it clearly as AI, and letting customers ask for a person, builds more trust. |
Pre-launch checklist
- Has the knowledge base been checked by the person responsible?
- Are the hand-over rules clear?
- Do out-of-hours replies say when someone will follow up?
- Is the assistant clearly labelled as AI?
- Have out-of-scope questions been tested?
- Is the WhatsApp account held in the company's name?
Frequently asked questions
Can I keep my existing WhatsApp number?
Usually yes, but the number needs to be connected to the WhatsApp Business Platform. Conditions and the migration process are set by Meta, so check its official guidance. We confirm your number's situation before set-up.
Can AI customer service give wrong answers?
The AI replies based on your company information. Questions outside that scope, or that need human judgement, are handed to a member of staff instead of being guessed. Test the system before launch and review conversations regularly after.