ChatGPT Ads agency in Brussels

Ads step into
ChatGPT.

Since August 24, 2026, ChatGPT has shown ads in Belgium. A new channel, where people describe what they need instead of typing three keywords. We help you get in early, test without burning budget, and measure what it actually brings in.

Book 20 min →

I’m looking for invoicing software for a small agency in Brussels. Which one should I pick?

For a small team, three criteria make the difference: compliance with Belgian e-invoicing, a link with your accountant, and the price per user.

SponsoredYour brand

Simple, compliant invoicing for Belgian agencies. 30-day free trial.

Learn more →
Illustration. The ad is labeled, separate from the answer, and has no influence on it.

ChatGPT Ads agency · Advertising in ChatGPT

More than keywords.
Needs.

On Google, intent is guessed from a few words. In ChatGPT, it’s spelled out in full, and gets sharper as the conversation goes on. The ad shows up when people know what they want, and are still deciding who to choose.

It’s a rare opportunity: a channel where intent is rich, competition is still thin and the rules are being written right now. It’s also a young channel, with formats that change almost every month and measurement still being built.

We won’t sell you a revolution. We offer to test it properly: a defined budget, reliable tracking, and stop criteria set before we start.

ChatGPT Ads · How it works

A new channel.
Clear rules.

Formats move fast. The principles are set: here is how advertising in ChatGPT works.

Delivery
In ChatGPT, in Belgium and across Europe, for users on the Free and Go plans, below the answer. Plus, Pro, Business, Enterprise and Edu subscriptions stay ad-free.
Buying
Self-serve Ads Manager, or support from OpenAI and its partners. CPM, CPC or conversion-optimized bidding.
Targeting
Geo-targeting and custom audiences. Advertisers never access conversations, and OpenAI states that it does not sell data.
Measurement
OpenAI Pixel, Conversions API and third-party measurement integrations, to connect ads to leads and sales.
Safeguards
Ads are labeled, separate from answers and have no influence on them. No ads for users under 18, nor near sensitive topics such as health, mental health or politics.
Tools
AI-assisted ad creation in Ads Manager, and integrations with tools such as HubSpot and Shopify.

Sources: OpenAI announcements (“ChatGPT Ads expands across Europe”, “Reimagining advertising with AI”) and help center (“Ads in ChatGPT”).

Sialab — ChatGPT Ads campaign run by Clyde & Bonnie

Case study · Sialab

We tested it
for Sialab.

Sialab is a clinical interview simulator for psychologists, therapists and students. We built the website and the app, and we run its marketing strategy. We launched a ChatGPT Ads campaign for it.

First findings
  • Under 50 cents per click on average, on CPC.
  • The landing page matters even more than on Google: intent gets sharper as the conversation goes on, and the page has to answer that intent.
  • As on Google, no ads near mental health: we focused the campaign on training.

What our ChatGPT Ads agency does

From first test
to full management.

We support you at every step: setting up the account, launching a first test, writing the ads, managing bids and measuring results.

01

Preparation

Ready before you spend

Your sector’s eligibility under OpenAI’s ad policies, landing pages open to the OAI-AdsBot validation crawler, OpenAI Pixel, Conversions API and consent. We check everything before committing budget.

02

Test strategy

Picking the right moments

A large part of the work is defining the context — what OpenAI calls context hints: the needs, questions and doubts people have when your offer can help them. Budget, duration and stop criteria are set from the start.

03

Ads

Writing for someone comparing

Headlines, descriptions and visuals designed for someone in the middle of a decision. The copy suggested by Ads Manager’s AI is a starting point: we review it and adapt it to your offer.

04

Management

CPM, CPC or conversion

We choose the bidding model based on account maturity and data quality, adjust audiences and geo-targeting, and cut what doesn’t deliver results.

05

Measurement

Comparing with your other channels

We measure ChatGPT Ads with the same rigor as Google Ads, Meta and SEO, to compare what each channel brings in and allocate budget accordingly.

06

GEO

Paying, or being cited

Advertising doesn’t replace a presence in ChatGPT’s answers. We also work on visibility in generative engines.

Book 20 min →

The Clyde & Bonnie ChatGPT Ads method

Prepare. Test.
Decide.

01
Prepare
Check before spending
Ad policies, landing pages, tracking, consent. Nothing goes live until measurement is reliable.
02
Test
Small, short, measurable
A narrow scope, a defined budget, a few weeks. The goal: learn what this channel does for you, not occupy it at any cost.
03
Read
Compare honestly
Cost per lead or per sale, lead quality, comparison with Google Ads and Meta. Platform numbers on one side, your CRM on the other.
04
Decide
Scale or stop
If the channel pays off, we scale and refine. If it doesn’t yet, we say so and redirect the budget.

Who it’s right for.
And who it isn’t, yet.

Right today

Offers people choose by comparing: B2B software and services, training, e-commerce, travel and hospitality, services for freelancers. Ideally with a clear offer and tracking already in good shape.

Not yet

Politics: excluded. Health and finance: possible, but restricted. Budgets that can’t absorb a test phase. And accounts without reliable measurement: without data, nobody will know if it works.

And if what you really want is to be recommended in ChatGPT’s answers without paying, that’s GEO work. We do that too, with our SEO team.

FAQ · ChatGPT Ads agency & advertising in ChatGPT

Simple questions.
Honest answers.

What is ChatGPT Ads?

ChatGPT Ads is OpenAI’s advertising platform. It lets businesses show ads in ChatGPT to users on the Free and Go plans. Plus, Pro, Business, Enterprise and Edu subscriptions stay ad-free.

Ads appear below the answer, clearly labeled and kept separate from it.

Are ChatGPT ads available in Belgium?

Yes. Since August 24, 2026, ChatGPT has shown ads in Belgium and thirty other European markets.

Since August 31, 2026, European advertisers can also create and manage their own campaigns in Ads Manager, in beta.

Can paying influence ChatGPT’s answers?

No. OpenAI states that advertising does not influence ChatGPT’s answers. The ad shows up next to the answer, never inside it.

To be cited or recommended in the answers themselves, what matters is organic visibility work: GEO.

How much does a ChatGPT Ads campaign cost?

There is no set price. Cost depends on the bidding model — CPM, CPC or conversion-optimized —, on competition and on targeting. The channel is young and prices are still moving.

We recommend starting with a defined test budget over a few weeks, with success criteria agreed before launch.

What is the difference between ChatGPT Ads and GEO?

GEO, or Generative Engine Optimization, aims to get you cited naturally in the answers of generative engines like ChatGPT. You can’t buy it: it’s built through content, technical work and reputation.

ChatGPT Ads buys ad space next to those answers. The two work together: ads bring visibility right away, GEO a presence that lasts.

What data do advertisers get?

Advertisers never access users’ conversations, and OpenAI states that it does not sell data.

Measurement relies on campaign reporting and on your own tools: the OpenAI Pixel, the Conversions API and third-party measurement integrations connect ads to leads and sales.

Which sectors can’t advertise in ChatGPT?

Political advertising is not allowed. Ads are not shown to users under 18, nor near sensitive topics such as health, mental health or politics.

Other categories are restricted by OpenAI’s ad policies. We check them with you before any launch.

Do you need an agency?

No: Ads Manager is self-serve. An agency helps you prepare the ground — tracking, landing pages, ad policies —, frame the tests and compare results with your other channels.

On a channel that changes almost every month, what you mostly save is time and early mistakes.

Contact · ChatGPT Ads agency in Brussels

Get ahead.
Not exposed.

Wondering whether ChatGPT Ads makes sense for your business? Twenty minutes is enough to find out.

Book 20 min →