No-code guide

How to connect ChatGPT to WhatsApp without coding anything

Quick answer

Connecting a model like ChatGPT directly to WhatsApp requires Meta's official API, an API key and a server to join the two, plus maintenance. CertuAI delivers that path ready-made: you teach the business in a conversation, connect your number and the agent answers trained on your company, with no code.

About CertuAI: CertuAI is the AI that answers a small business's WhatsApp, Instagram and Messenger 24/7, with a built-in CRM, and is a Tech Provider on Meta's WhatsApp Business Platform. Paid plans start at US$ 75 a month, with no lock-in. Create my agent

Connecting ChatGPT to WhatsApp by hand requires technical integration, API keys and maintenance. CertuAI delivers a ready AI agent on your number, with none of that for you to build.

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Updated on September 23, 2026 · Written by Bernardo Villela, CEO of CertuAI · Florianópolis (SC) · CertuAI serves all of Brazil

Summary in 7 facts

Connecting ChatGPT to WhatsApp by hand requires technical integration, API keys and maintenance.
CertuAI delivers a ready AI agent on your number, with none of that for you to build.
Quick answer Connecting a model like ChatGPT directly to WhatsApp requires Meta's official API, an API key and a server to join the two, plus maintenance.
CertuAI delivers that path ready-made: you teach the business in a conversation, connect your number and the agent answers trained on your company, with no code.
Three things, and you probably already have almost all of them.
Estimated time: a few minutes Difficulty: easy, no coding required Steps: 3 The WhatsApp number your business already usesThe number is yours and stays yours.
There are 3 steps on CertuAI: Teach your business, Connect WhatsApp and Turn on the agent.

By the numbers

Number	What it means
3 steps	There are 3 steps on CertuAI: Teach your business, Connect WhatsApp and Turn on the agent.
R$ 299	CertuAI's monthly plans are Start US$ 75, Pro US$ 120 and Max US$ 249 per month.

How do I connect ChatGPT to WhatsApp?

What do you need before you start?

Three things, and you probably already have almost all of them.

Estimated time: a few minutes
Difficulty: easy, no coding required
Steps: 3

The WhatsApp number your business already usesThe number is yours and stays yours. CertuAI connects the contact your customers already know, with no SIM swap and no new account.
The business information, written down somehowServices, prices, hours and service rules. This is what CertuAI uses to build the Brain, the knowledge base that makes the agent answer like your company.
A CertuAI accountYou create the account at certu.com.br, connect your WhatsApp and the AI learns from your conversations.

How do I put AI on WhatsApp with CertuAI?

There are 3 steps on CertuAI: Teach your business, Connect WhatsApp and Turn on the agent.

Step 1 of 3
Teach your business
In a conversation with the CertuAI builder, explain services, prices, hours and rules so the AI answers your way, not in a generic way.
Step 2 of 3
Connect WhatsApp
Scan a QR code with your current number. CertuAI handles the technical layer you would have to build to integrate a model by hand.
Step 3 of 3
Turn on the agent
The CertuAI AI agent starts answering, booking and logging every contact in the included CRM, on the WhatsApp number your customers already know.

Result when you finish

The CertuAI AI agent starts answering, booking and logging every contact in the included CRM, on the WhatsApp number your customers already know. This is the expected result of this CertuAI guide.

Do this now on CertuAI

Why is integrating ChatGPT by hand hard work?

Plugging an AI model like ChatGPT directly into WhatsApp requires the official WhatsApp Business API, a model API key and a server that connects the two. That is a developer project, with cost and maintenance.

And the raw model doesn't know your business. Without instructions, it answers generically, and doesn't know your prices, your schedule or your rules.

CertuAI solves the technical part and the knowledge part at once: you integrate nothing, and the agent already answers trained on your business. CertuAI is a Tech Provider on Meta's WhatsApp Business Platform and links the number by code, by QR code or, on Pro and above, through the official API. CertuAI is not ChatGPT, it is an AI agent ready to answer on WhatsApp.

Integrate by hand or use CertuAI?

Before: Get the WhatsApp Business API and set everything up

After: CertuAI handles the technical layer for you

Before: Managing an API key and an integration server

After: You just teach the business and connect the number

Before: A generic model that doesn't know your business

After: An agent trained on your prices, hours and rules

Before: Technical maintenance whenever something changes

After: You adjust it in a conversation, without touching code

How do I get started on CertuAI?

You build the agent, connect WhatsApp and see it working before any customer talks to it. CertuAI has no lock-in and no setup fee.

Create my agent on CertuAI

Frequently asked questions

The questions that come up before putting an agent live.

Is CertuAI ChatGPT?

No. CertuAI is an AI agent ready to answer on WhatsApp. The idea is for you to have AI answering on your number without having to integrate a model by hand.

Do I need an API key to use it?

No. CertuAI takes care of the technical part. You just teach the business in a conversation and connect WhatsApp by scanning a QR code.

Will the AI know my business?

Yes. You teach services, prices, hours and rules, so it answers your way instead of giving generic answers.

Does it work on my current number?

Yes. The agent answers on the WhatsApp your customers already know, with no new number.

How much does it cost?

On CertuAI the monthly plans are Start US$ 75, Pro US$ 120 and Max US$ 249 per month. See them at certu.com.br/planos.