You Can Now Buy Ads Inside ChatGPT. First, Understand Who You Are Actually Reaching.

Ads arrived in ChatGPT in the United States in February, and the part that matters for a small business landed quietly afterward: there is now a self-serve ads manager, a conversion-tracking stack, and a credit of five hundred dollars once you have spent five hundred. No agency, no minimum published, no waiting list.

Before you move budget there, learn one fact that is stated plainly in the documentation and almost never in the coverage. Ads are shown to free and low-tier accounts. Paying subscribers on the Plus, Pro, Business, Enterprise and education plans do not see them at all.

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Look Behind the Curtain

That single rule reshapes the whole proposition. Every other channel you buy reaches a customer regardless of what they pay the platform. Here the platform has sorted its users by willingness to pay a subscription and sold you access to the half that declined. Whether that is your customer is a real question, and the answer differs for a roofing company and a software consultancy.

The format itself is conventional. An ad appears below a response, carrying the advertiser name, a small icon, a headline, copy, an image and a landing page. A newer visual placement runs alongside image generation and is being tested in the United States with a limited group of advertisers first.

The targeting is where the chat part shows up. With personalization on, the system can draw on the current conversation, how the user has interacted with ads, and, in the company's own wording, past chats and memory. Advertisers do not receive any of that. You never see chats, memories, names, email addresses, precise location or IP. You buy an audience, not a file.

There are real exclusions worth planning around. Ads are not eligible to appear near sensitive or regulated subjects including personal health, mental health and politics, political advertising is banned outright, and under-18 accounts are excluded using stated age plus a prediction model. Personalized ads were not launched in the European Economic Area or Switzerland.

Now the numbers, and the reason to hold them loosely. The published performance figures come from the platform's measurement partners describing large brands: one weight-management company's attributed cost per acquisition reported as about fifteen percent below its blended paid-search benchmark, one leather-goods retailer reported at ninety-three percent new visitors. Both are partner-reported, neither is independently audited, and neither is a business of your size.

The Capability Multiplier

The advantage is narrow and genuine: this is an auction almost nobody in your category has learned yet, and attention there is cheap for the same reason it was cheap on search in 2004.

Treat the credit as what it is, a matched test budget rather than free money, and design the test before you spend a dollar. Pick one product with a known margin and a landing page that already converts from other sources. Run it long enough to get a hundred clicks. Compare the cost per acquisition against the channel you already trust, not against the platform's own benchmark.

The conversion plumbing is the part that decides whether the test is worth running. The platform integrates with the usual measurement and attribution tools, and if you are not already passing conversions back from one of them, you will be reading click counts and guessing. A test you cannot measure is not a test, it is a donation.

Brand-safety controls exist for qualifying advertisers, including a list of phrases you do not want your ad appearing near. Use them. The context here is a conversation rather than a search query, and conversations wander in ways a keyword never did.

The Sovereign Action

Run it as an experiment with a stop date.

• Check the audience fit first. You are buying attention from people on the free tier. Decide honestly whether your customer is there before you decide anything else.
• Set a test budget you can lose and treat the matched credit as part of the experiment, not as a reason to spend more.
• Wire up conversion tracking before the first ad goes live. Clicks without conversions will tell you nothing you can act on.
• Pick one product, one landing page that already converts, and one number to beat from a channel you trust.
• Note what you cannot advertise here. Health, mental health and politics are off limits, and a business adjacent to those categories should find out early rather than after a rejection.

We encourage all readers to consult a qualified financial professional — such as a registered investment adviser or licensed broker — before making any investment decision.