ChatGPT Ads Open Up to Self-Serve Buying: The Tools, Billing, and Targeting from OpenAI's May Announcement

On May 5, 2026, OpenAI published an announcement titled “New ways to buy ChatGPT ads” on its official news page, and that is the date printed on the page. The announcement opens by saying that OpenAI is expanding ChatGPT ads with new ways for advertisers to buy and manage campaigns, built around its own ads principles. The body is organized into four sections, covering in order: expanding how businesses can buy ads, launching cost-per-click (CPC) bidding, developing more ways to measure results, and building the ChatGPT ad platform. Everything below about this announcement is OpenAI's own description.

This article was fact-checked on September 18, 2026, based on the announcement's own page and three ad API documentation pages on OpenAI's developer site. The announcement states that the self-serve ad management tool launched at the time was a beta, and OpenAI said it would gradually open it to more businesses; the developer documentation is a continuously maintained page with no publication date or version number, so it reflects the version read on the day of fact-checking, not necessarily what existed on May 5 itself. This site has not logged into the ads dashboard, has not created or purchased any ads, and does not offer any purchasing advice or platform comparison.

The May 2026 Announcement: A Beta Self-Serve Ad Tool

According to the announcement, OpenAI initially worked directly with a small group of advertisers to run campaigns in ChatGPT, then lowered the barrier through partners as the pilot expanded, before beginning to roll out, on May 5, a beta self-serve ad management tool that lets businesses register as advertisers themselves, enter payment details, set budgets and bids, upload ads, turn campaigns on and off, and view performance in a dashboard. OpenAI also states that this tool is being tested and refined as it goes, and is gradually opening to more businesses. The announcement also mentions partner agencies and technology partners, using the words “including” and “such as” rather than giving a complete list.

A change in billing is another focus of the announcement. It says that in the first phase of the pilot, advertisers could buy ChatGPT ads on a cost-per-mille (CPM) basis, as a preliminary way to understand demand, delivery, and early performance; this time OpenAI is adding cost-per-click (CPC) bidding, so that spend maps more directly to what users do after seeing an ad, and it states that advertisers pay only for the resulting clicks. OpenAI also says it will keep supporting both CPM and CPC buying. On measurement, the announcement says it recently launched a Conversions API and pixel measurement, that advertisers receive aggregated performance data rather than seeing individual conversations, and that these methods do not share conversations or personal details with advertisers.

How Ads Are Bought: Four Layers, Account, Campaign, Ad Group, Ad

The developer documentation splits ad buying into four layers: under the ad account sits the campaign, under the campaign sits the ad group, and under the ad group sits the ad itself. The documentation lists what each layer configures: the ad account holds brand information, currency, time zone, account access, and spend limits; the campaign holds the objective, budget, schedule, geographic and platform targeting, and audience inclusion and exclusion, plus conversion events; the ad group holds the bidding strategy, context hints (explained below), audience bid adjustments, and the product set; the ad itself holds the creative, an image or product template, and the landing page URL. The documentation specifically notes that an account marked “active” may still have an outstanding review.

The documentation's example flow uses the creative type chat_card, which requires a headline, body text, and a landing page URL, plus an image of at least 640×640 pixels; creating the ad submits its creative for review. The bidding and budgets page states that newly created resources default to a paused state, so advertisers can finish setup before turning delivery on, which means the campaign, ad group, and ad each need their own activation call. The documentation explains that activation enables delivery only once the remaining requirements are met; the preview feature only shows appearance and does not mean an ad already qualifies to go live.

How Billing Works: Three Campaign Objectives and Bidding Strategies

OpenAI's bidding and budgets page lists three campaign objectives: impressions, clicks, and conversions. The impressions objective bills by impression and only allows a self-set fixed bid; the clicks objective bills by click and can either use a self-set fixed bid or let OpenAI auto-adjust bids to pursue more clicks; the conversions objective is also billed on clicks: the documentation states that conversion campaigns optimize toward the selected action but bill for valid clicks, and here too the bid can be self-set or handed to OpenAI to pursue more conversions. In other words, setting the objective to conversions changes what the bidding is optimized for, while the billing basis remains clicks.

OpenAI collectively calls the two strategies that hand bid adjustment to the system Maximize Results, corresponding to the clicks and conversions objectives; both require a daily budget and cannot have a manually entered bid amount, while a self-set fixed bid can use either a daily or a lifetime budget. Amounts in the API are expressed as integer micros, where one unit of an account's currency equals 1,000,000 micros; this is simply a way of counting, and the budget and bid examples on the bidding and budgets page are stated to be for illustrative purposes. As for thresholds, the documentation only says that the minimum daily budget depends on the account's currency, and that a request below the threshold returns an error telling you the amount required, while bid limits depend on both the account's currency and the campaign objective; neither place prints a specific number.

On whether an ad actually appears, the documentation says that besides the budget and the account spend limit, delivery also depends on the campaign schedule, resource statuses, review outcomes, targeting conditions, and available inventory. Budgets also work at two independent levels: a campaign's own budget is calculated separately from the ad account's overall spend limit, so raising a campaign's budget does not reopen an account spend limit that has already been exhausted; and the documentation states that the account-level spend-limit window is available only to some accounts.

Targeting Conditions: Region, Platform, and Context Hints

The documentation states that region, platform, and audience targeting all apply together, so meeting one of them does not override the others; if the same person falls into both an included and an excluded audience list, the exclusion takes precedence. Region targeting uses ISO 3166-1 alpha-2 country codes, and geographic inclusion and exclusion lists can hold up to 2,500 location IDs, with the documentation noting that account availability and campaign mode can impose additional restrictions. OpenAI also notes that a code's ISO validity does not mean your account can advertise in that region — you need to check the supported advertising locations; none of the four sources checked for this article lists that set of regions. Update, October 3: for where Taiwan stands now, see this report.

For platform targeting, the documentation lists three “broad platform groups”: the iOS app, the Android app, and web; OpenAI gives the example that a person opening the ChatGPT website in an iPhone browser counts as the web group rather than the iOS app group, which is not entirely intuitive. The documentation also states that if a campaign is created without platform targeting set, the default is all platforms. Note that these three are broad groups rather than every value you can enter: the changelog on the documentation's overview page shows that on September 10 the web group was further split into desktop, iOS web, and Android web.

When advertisers upload their own list as an audience, the documentation states the usable identifiers are email, phone, the officially supported SHA-256 hashed forms of those two, and GAID; list files must be no larger than 500,000,000 bytes. Ad groups also have context hints, free text that advertisers write to describe the relevant product, use case, or need, filling in what the creative and landing page URL do not fully convey; the documentation stresses that these hints are not exact-match keywords, cannot replace explicit region, platform, or audience targeting, and that the examples in its table are illustrations of writing style only, not a guarantee that any given conversation will actually trigger an ad.

Still Changing: How to Check the Current State Yourself

The changelog attached to the developer documentation shows that between June 3 and September 10, 2026, this ad API progressively added a region-targeting and location-lookup endpoint, conversion configuration and reporting endpoints, performance data broken down by product, country, and device, add/remove/replace/merge operations for custom audiences, daily account spend limits for ad accounts on postpaid invoice billing, and the further split of the web platform into desktop, iOS web, and Android web. Before that there is only a single undated initial version, so this documentation cannot be used to describe exactly which features existed on May 5 itself.

Readers who want to confirm the current state can check the ad API documentation at developers.openai.com themselves for the latest version and changelog, or look for follow-up announcements on OpenAI's official news page. Everything in this article about what this product can do is sourced from OpenAI's own announcement and documentation; this site has not seen what an ad actually looks like inside the ChatGPT interface. Which options advertisers can actually configure, and how costs are actually calculated, should still be judged from what you see after logging into an account and from OpenAI's own explanation at the time.

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