ChatGPT Ads, Sponsored Agents and AI Mode Ads Explained

ChatGPT ads are sponsored units shown below ChatGPT's answers to adult users on its Free and Go tiers, bought in OpenAI's Ads Manager on impression or click bids. Sponsored Agents extend an ad into a branded chat after the click. Google sells ads in AI Overviews and AI Mode. None of these placements buys a mention in the answer itself.

That last point decides how you should measure them. In SE Ranking's study of 50,032 commercial keywords, only 11.53% of AI Mode advertiser domains were also cited in the answer for the same keyword. Paid and organic AI visibility behave like two ledgers, and a report that adds them together tells you nothing about either.

The four formats and where they appear

Four formats matter today: ChatGPT's sponsored unit, its Sponsored Agents test, and Google's ads in AI Overviews and in AI Mode.

Format	Surface	Placement	How you buy it	Status on Sep 26, 2026
Sponsored ad unit	ChatGPT (Free and Go, adults)	Below the response: advertiser name, logo, headline, copy, image, landing page	OpenAI Ads Manager: Views (CPM), Clicks (CPC) or Conversions (optimized CPC, billed per click)	Live. Self-serve beta opened in 31 European markets on Aug 31
Sponsored Agent	ChatGPT	A labeled conversation with a business's agent, opened from an ad	Not open for requests	Limited alpha, select US advertisers
Ads in AI Overviews	Google Search	Above, below or inside the AI Overview	Existing Search (broad match or AI Max), Shopping and Performance Max campaigns	Live. Inside placement in English in 12 markets including the US
Ads in AI Mode	Google AI Mode	Inside the AI Mode response, often two at a time	Same eligibility route as AI Overviews; no AI Mode targeting	Live. Google announced further AI Mode formats in May

OpenAI's advertiser basics page states that ads do not appear for Plus, Pro or Business users, or for accounts identified as under 18. It also lists the auction as "relevance-weighted, second-price", and suggests a starting maximum of $3 to $5 per click for CPC campaigns.

Sponsored Agents let a user open a chat with "an AI representative of a business" from an ad. OpenAI's September 16 announcement says that conversation is "distinct from ChatGPT's independent answers and separate from the original conversation". The same post launched HubSpot and Shopify integrations, an Ads Manager plugin inside ChatGPT, and opt-in text customization that rewrites your headlines to fit the conversation. Search Engine Roundtable covered the test the same day.

On Google's side, the Google Ads help page says text and Shopping ads from existing campaigns can show above, below or within AI Overviews, and that you cannot target or opt out of the placement. At Google Marketing Live in May, Google announced AI Mode formats such as Highlighted Answers, where an ad can appear inside a recommendation list, and Conversational Discovery ads. We found no Google Ads help page confirming general availability of those formats, so treat them as announced rather than bookable until your account shows them. How AI Mode chooses its organic sources is a separate question, covered in the AI Mode tracking guide.

How much of the answer space ads take today

About a quarter to a third of commercial prompts carried an ad in two one-day samples of roughly 50,000 prompts each. Read each figure with its sample.

Study	Surface	Sample	Share with an ad
SE Ranking, AI Mode ads	Google AI Mode	50,032 commercial keywords, 20 niches, US, collected June 30, 2026	29.45%
SE Ranking, ChatGPT ads	ChatGPT	50,006 commercial prompts, 20 niches, US, collected July 23, 2026	25.94%

The AI Mode study adds detail you can plan around. Where ads appeared, 71.1% of keywords showed two ads together. Ad presence rose with cost per click, from 24.33% for keywords under $2 to 53.56% above $10. By niche it ranged from 72.38% in Pets to 2.64% in Healthcare.

In ChatGPT, SE Ranking found one sponsored placement below the answer, never two, and judged 14.35% of ads off-topic for the prompt that triggered them. Both studies are single-day snapshots of broad commercial keyword sets. Daily tracking of shopping questions, where purchase intent is explicit, will show a higher ad rate than these broad samples, so compare any number you collect against a sample built the same way.

Spend is growing with the inventory. Digiday reported on August 31 that ChatGPT ads passed a $1 billion annualized run rate in under 200 days.

Why paid and organic AI visibility need separate ledgers

The same brand rarely appears in both places, and each placement answers a different question: did we buy the slot, and did the engine choose us.

• In AI Mode, 11.53% of advertiser domains showed up among the cited sources for the same keyword, and 1.95% at the exact URL.
• In ChatGPT, SE Ranking found the advertiser was not cited in 96.37% of placements.
• OpenAI says ChatGPT's shopping results "are selected independently by ChatGPT and are not ads, nor influenced by any OpenAI partnerships" (OpenAI Help Center). We have no way to verify that from outside; the public studies above are consistent with it, since advertisers were rarely cited in the answers next to their ads.

Ledger	What it counts	Where the data comes from	KPI
Paid	Impressions, clicks, spend and conversions from your own ads	OpenAI Ads Manager, Google Ads	Cost per qualified conversion
Competitive paid	Which advertisers appear on your prompts, how often, in which position	Repeated prompt sampling on each surface	Ad share of voice by prompt and surface
Organic	Mentions, citations and position inside the answer	Prompt tracking	Mention rate and citation rate on the same prompts

Keep the organic ledger on the definitions in what counts as a good AI citation rate, and compute share of voice in AI answers without sponsored units in the numerator. ChatGPT Shopping's product carousels belong in the organic ledger too; how ChatGPT picks products covers that surface.

Targeting and attribution

In ChatGPT you steer delivery with context hints and optimize toward a conversion event. In AI Overviews and AI Mode you get no dedicated targeting and no separate reporting.

ChatGPT targeting works through "context hints" set at the ad-group level. OpenAI describes them as conversations, topics or keywords where your product is relevant, and adds that they "are not exact-match keywords and do not guarantee delivery". The system also weighs the current conversation, your landing page and copy, and, where a user has personalization on, "select signals from a user's broader ChatGPT experience".

Attribution runs through a data source you create in Ads Manager. OpenAI's conversion measurement guide covers the moving parts:

• The OpenAI Pixel, the Conversions API, or both, deduplicated by a shared event ID.
• A click reference called oppref, appended to your landing page URL. Preserve it through redirects.
• Click-through attribution with a configurable window, and view-through attribution with a fixed one-day window where your account has it.
• Automatic advanced matching, which hashes form data in the browser, and modeled conversions, which OpenAI says reported totals "may include".
• Static UTM parameters on landing URLs, so ChatGPT ad traffic appears in your own analytics.

Ads Manager reports impressions, clicks, spend, CTR, average CPC and CPM, and conversions. OpenAI notes that spend can lag by seven to eight hours.

Google's help page for AI Overviews states: "Google Ads currently doesn't offer segmented reporting when ads show within Search AI Overviews." We found no Google documentation of separate AI Mode reporting either, so both placements sit inside ordinary campaign reports. If you need to know how often a competitor's ad appears on your prompts there, you have to observe the surface yourself.

Tracking competitors' ads in AI answers

Sample the same commercial prompts on each surface every week and record every ad that renders. ChatGPT ads live in the consumer app and show only to Free and Go users, so you need a logged-in consumer session on one of those tiers to see them.

1. Pick 20 to 50 commercial prompts from your tracked set, weighted toward the questions with the highest cost per click in your paid search account.
2. Run them weekly in Google AI Mode, in Google Search for AI Overviews, and in consumer ChatGPT on a logged-in Free or Go account in your target country.
3. For each rendered ad, record the surface, prompt, position, headline, landing URL and the advertiser's real domain. Resolve tracking links to that domain before you count.
4. Match advertisers against your competitor list and flag new names.
5. Compute ad rate per prompt (answers with at least one ad, divided by answers observed) and ad share of voice per advertiser.
6. Put the organic result for the same prompt next to it, so you can see who pays, who earns, and who does both.

Citlyze's Ads in AI does this on the prompts you already track: it resolves advertiser domains, ranks advertisers by placements, shows paid and organic overlap per prompt, and can alert you when a new advertiser appears.

When to test AI ads, and which KPI to use

Test when competitors already buy your commercial prompts and your conversion tracking can see the result. Judge the test on cost per qualified conversion against your paid search baseline.

Situation	What to do	KPI
Competitors appear as advertisers on your highest-value prompts	Run a capped test on those topics with context hints that mirror the prompts	Cost per qualified conversion vs paid search
You are absent from organic answers on a prompt	Fix the organic gap first; the studies above show ads rarely bring citations with them	Organic mention and citation rate
You have no Pixel or Conversions API in place	Set up measurement before spending	Share of ad clicks carrying oppref through to conversion
Your category is in a restricted vertical	Check OpenAI's and Google's ad policies first; Google excludes finance, healthcare and others from ads in AI Overviews	Eligibility

Set the budget, the prompts and the end date before launch, and keep a matched set of prompts where you do not advertise, so a change in organic visibility during the test has something to compare against. The prompts come from the same place as your organic program; finding the prompts your buyers ask covers the research.

Map who already buys your prompts first

Before you buy a placement, know who already owns the paid slot on your prompts and whether the engines cite you without one. Citlyze tracks your organic mentions and citations on your own prompts from $29 a month, and Ads in AI adds the advertiser layer from the Growth plan; ChatGPT ad capture, which needs a consumer session, comes as an add-on. The 14-day trial asks for no card.