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How much does a WhatsApp AI chatbot cost for a small business?

The parts of a WhatsApp AI chatbot's cost, what Meta charges per message in Spain and indicative ranges for a small business.

Published: 7 min readCasa Strategies

In short

A WhatsApp AI chatbot for a small business usually costs from a few hundred to a few thousand euros to set up, plus a monthly fee from tens to just over a hundred euros for the platform, the AI and Meta's messages. It depends on what it has to do: answer questions, manage appointments or connect to your website and systems.

The four parts of the cost

When you get a quote, check it covers all of this:

  • Setup: designing the conversations, configuration and testing.
  • The official WhatsApp platform or provider (monthly fee).
  • Messages charged by Meta, depending on the message type.
  • AI usage (the model that writes the replies).

What Meta charges per message in Spain

Meta charges per delivered message, and the price depends on the message type and the recipient's country. Since 1 October 2026 it also charges service replies beyond the first 1,000 a month per number.

As a guide, in Spain marketing messages cost about 6 cents and utility or verification messages between 1.5 and 2 cents. Service replies are free up to 1,000 a month per number.

Message typeWhat it's forIndicative cost in Spain
MarketingPromotions, campaigns, re-engaging customers≈ 6 cents per message
UtilityAppointment confirmations, order updates, invoices≈ 1.5 – 2 cents
VerificationLogin codes≈ 1.5 – 2 cents
ServiceReplying when the customer writes to youFree up to 1,000/month per number; then ≈ 1.5 – 2 cents
WhatsApp Business Platform official pricing page
WhatsApp Business per-message pricing. Source: whatsappbusiness.com (checked 17/10/2026).

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Free 30-minute consultation

We review your business, your website and your presence on Google, and tell you what we'd do first. Free, no commitment, by video call.

  • A quick check of your website and SEO
  • Concrete ideas to win more clients
  • A rough quote if you need one

Indicative setup ranges

These are the ranges seen in the Spanish market. The final price depends on your business and the connections the bot needs.

Type of chatbotWhat it doesSetupIndicative monthly fee
FAQ answersOpening hours, prices, location, hand-off to a person€300 – 800€30 – 60
AI with appointments or bookingsUnderstands free-form questions, books and sends reminders€800 – 3,000€50 – 150
Advanced integrationCRM, payments, several languages, several numbers€3,000 or moredepends on volume

A sample month for a local business

Picture a clinic or a garage that sends 500 appointment reminders, answers 800 customer messages and runs a 300-message campaign. In Meta's message fees it would pay roughly €25–30 that month: the reminders come to about €8, the campaign about €18, and the replies fall inside the free 1,000.

Add the platform and the AI on top. That is why a small business's total monthly cost usually stays in the tens of euros, not the hundreds.

What a chatbot automates well

Where a WhatsApp chatbot saves a small business the most time:

  • Answering the same questions at any hour.
  • Booking, changing or cancelling appointments.
  • Sending reminders to cut no-shows.
  • Collecting customer details before handing over to a person.
  • Updating customers on an order or a quote.

Before you hire, check this

Three things that avoid surprises:

  • The bot hands the conversation to a person when it can't answer.
  • Customers have agreed to receive messages (GDPR) before you send them campaigns.
  • The quote separates setup, the platform and Meta's message fees.
Keter Health mobile website with a direct WhatsApp link
A common first step: a direct WhatsApp link on the website, as on Keter Health, a site we built.

Ranges are indicative: the final price depends on your website, your project and what you need. We give you a fixed quote after a free call.

Frequently asked questions

Do I need the WhatsApp Business API or is the app enough?

For an AI chatbot with several users you need the official platform (API) through a provider. The free WhatsApp Business app is fine for simple automatic replies.

Do messages customers send me cost anything?

No. Meta charges for messages your business delivers. Service replies are free up to 1,000 a month per number.

How long until it's running?

An FAQ bot can be ready in a few days. One with AI, appointments and integrations takes longer, depending on what it has to connect to.

How much would mine cost?

It depends on your business and what the bot has to do. In a free 30-minute call we give you a range and then a fixed quote.

Sources

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