Until recently there was one pattern worth describing: paid placement was arriving in AI answers as an extension of advertising systems that already existed. An advertiser did not buy an AI Overview; existing Search, Shopping and Performance Max campaigns simply became eligible to appear in one. That framing was accurate, and it is now only half the picture.
The other half is a purpose-built conversational ad platform. OpenAI has built its own buying, campaign-management and measurement layer for ChatGPT rather than extending someone else's. That is a materially different thing to plan for, because it comes with its own account structure, its own bidding, its own conversion measurement and its own access rules.
What changed on the conversational side
The February 2026 US test is no longer an accurate description of ChatGPT Ads. OpenAI opened a beta self-serve Ads Manager on 5 May 2026, added cost-per-click bidding alongside the original CPM buying, and has since documented conversion-optimized campaigns that bid toward a specific conversion event. Measurement now runs through an OpenAI pixel and a server-side Conversions API.
Geography moved too. OpenAI announced on 18 August 2026 that ChatGPT Ads was expanding to 31 European markets, rolling out the following week. Access mechanics vary by market: in Europe, campaigns run through OpenAI's Ads Solutions team and agency or technology partners first, with self-service access stated as following later. Sponsored units are still shown only to the Free and Go tiers.
None of that makes it a settled channel. It makes it a real one, which is a different judgment: real enough to plan a test against, not settled enough to assume this month's access model is next month's.
Where the real work is
The durable work has not moved. Understand the decision being made, earn relevance to it, send the customer somewhere that continues the conversation, and measure whether the placement produced something the business actually values.
That work is also what makes a test readable. A placement you cannot measure against a qualified outcome produces a spend figure and an opinion, whichever model it was bought through.
Current status by platform
Every row states what its primary source actually establishes, and carries its own checked date. Rows are re-checked when a platform moves, not on a schedule, so the dates below differ.
| Platform | Surface | Status | Access | What is verified | Source | Checked |
|---|---|---|---|---|---|---|
| Ads in AI Overviews | Live | Existing Search, Shopping and Performance Max campaigns. No separate bidding or reporting for the placement. | Google documents ads as eligible to show above, below or within AI Overviews, placed by existing signals and systems. Advertisers cannot target the placement directly and cannot opt out of it. Impressions are reported as Top Ads, so there is no separate reporting line for the placement. | Google Ads Help - About ads and AI Overviews | 2026-08-27 | |
| AI Mode formats (Conversational Discovery ads, Highlighted Answers) | Testing | Not generally available. US test, mobile and desktop. | Announced at Google Marketing Live on 2026-05-20 and still described as testing. General availability, pricing and dedicated AI Mode bidding controls are not established. | Google announcement | 2026-08-25 | |
| OpenAI | Sponsored units in ChatGPT | Live | Self-serve Ads Manager across the US, the UK, 31 European countries, India, the Middle East and North Africa, plus OpenAI's Ads Solutions team and agency or technology partners. Self-serve accounts pass a verification step. | OpenAI opened a beta self-serve Ads Manager on 2026-05-05 with CPC bidding alongside CPM, and documents conversion-optimized (oCPC) campaigns, a Measurement Pixel and a Conversions API. Expansion to 31 European markets was announced on 2026-08-18, and self-serve access opened across those markets, India, the Middle East and North Africa on 2026-08-31. Sponsored units are shown to Free and Go tiers only. | OpenAI announcement | 2026-09-04 |
| Microsoft | Ads in Copilot conversations | Live | Microsoft Advertising. All eligible campaign and ad types are opted in automatically, and advertisers cannot opt out. | Microsoft's own documentation states that eligible Search, Shopping and Performance Max ads serve inside Copilot with no opt-out and no Copilot-specific metrics. The January 2026 Copilot Checkout and Brand Agents announcement centers on commerce. | Microsoft Advertising documentation | 2026-09-04 |
| Perplexity | Sponsored answers | Unverified | None known. | Perplexity launched advertising in November 2024 and stopped accepting new advertisers in October 2025. The wind-down rests on reporting; Perplexity has not published its own announcement, so the current status cannot be confirmed from a primary source. | Campaign US reporting | 2026-07-14 |
Live means an advertiser can buy the placement today. Testing means the platform has confirmed a limited test. Announced means formats are announced but not yet buyable. Unverified means the current status cannot be established from a primary source, and we say so rather than inferring it.
What this means for an operator
Treat these as two different buying models, not one channel. Prepare the inputs now, verify what is actually available in your market before budgeting, and only test where the outcome can be measured.