Amazon has made ChatGPT ad inventory buyable through its own demand-side platform in a US pilot, turning the largest retail-ad machine into the front door for conversational ads. The lesson for Australian operators is to watch the buying stack, not the channel.
The Take: Amazon has made ChatGPT ad inventory buyable through its own demand-side platform. That matters more than ChatGPT carrying ads at all, because it turns the largest retail-ad machine into the front door for a channel that barely has rules yet.
Zoom out: Amazon Ads announced that select US advertisers can now buy ChatGPT inventory through Amazon DSP as a managed service, on either a cost-per-click or CPM basis. As Digiday reported, Amazon runs the buying relationship while OpenAI decides where the ads appear, with Delta Vacations among the first names in the pilot.
The pattern: Amazon has run this play before, plugging outside inventory into a platform fed by its shopping data. It has spent years chasing reach beyond its own store, from streaming to third-party publishers. A chat assistant answering shopping questions is a natural next stop. The new part is the surface. A conversational assistant has no feed to scroll and no banner rail to fill, so the ad format and the measurement behind it are still being invented in public.
The two ways Amazon will let advertisers buy ChatGPT inventory, a retail-data buyer meeting a channel with no settled rulebook
The local angle: The pilot is US-only, so no Australian operator is buying this next week. It still matters here. Retail media is the fastest-growing channel in the market, forecast by IAB Australia to reach $2.3 billion in 2026, and the buying stack Australian brands already use for retail media is the same one now reaching into AI chat. Search still takes the largest slice of that spend, but conversational assistants are where the next fight for query intent will play out.
For Australian operators: Watch the plumbing, not the headline. The real signal is that your retail-media DSP is turning into the buying layer for whatever channel comes next, which makes the account and the data you feed it the asset worth building. Get your first-party data and product feeds clean now. When this reaches Australia, the brands ready to move will be the ones already treating retail media as infrastructure rather than a line item.