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Amazon extends its $70 billion ad business into OpenAI's ChatGPT
A pilot launched Sept. 10 puts ChatGPT ad space inside Amazon DSP, so OpenAI gets a sales force it never hired and Amazon gets the advertiser contract for inventory it does not own or host.
The Investor · Invest desk

What happened
- Amazon Ads and OpenAI opened a pilot on Sept. 10 letting select U.S. advertisers extend existing Amazon campaigns into ChatGPT, buying the placements through Amazon DSP with no direct OpenAI negotiation.
- Before the pilot, ChatGPT ad space could be bought only from OpenAI directly or through smaller ad-tech intermediaries including Criteo and Kargo.
- Quartz reported the deal reverses Amazon's earlier stance of keeping ChatGPT, Claude and Gemini out of its retail ecosystem while it built competing AI shopping tools.
- Delta Vacations is among the first brands testing the arrangement.
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Why it matters
- capability A media buyer can now add conversational inventory to a plan already running in Amazon DSP, with no new vendor to onboard and no OpenAI account to open.
- constraint Demand that arrives through someone else's platform does not build a sales function, so the account list behind OpenAI's fastest-growing ad channel is not one OpenAI would inherit if the pilot ended.
- exposure OpenAI's growth is now partly in the hands of sellers whose primary product is Amazon's own inventory, and at 1.4% of that segment ChatGPT is a small line in their book.
- precedent Amazon has shown it will broker placements on a model surface it neither hosts nor controls. Other assistant makers can use the same route to rent demand instead of hiring sellers.
OpenAI's advertising business crossed a $1 billion annualized run rate in early September, and the company is privately targeting $100 billion by 2030 [6][7]. Compounded over the roughly four years to that date, 100-fold growth works out at about 3.2 times a year, or near 216% annually [15]. Amazon's advertising segment turned over more than $70 billion on a trailing 12-month basis this year [5]. OpenAI's 2030 target is about 1.4 times that [14].
Amazon's contribution here is sales. ChatGPT already has hundreds of millions of users [12]. Having signed the pilot, OpenAI is not building the sales operation those users would otherwise require. "They're still trying to build out even many of the basics of a functional ad sales operation," Nate Elliott, principal analyst at eMarketer, told PPC Land [10]. Every earlier expansion of ChatGPT advertising, including the self-serve ads manager, new country rollouts and falling minimum spend thresholds, had OpenAI selling its own inventory [19]. The buyer relationship, and the campaign the placement sits inside, now belongs to Amazon [1].
By PYMNTS's account, the arrangement extends Amazon's advertising reach onto a surface it does not own, host or fully control end to end [17]. The units run as text or images beneath a ChatGPT response, labelled as sponsored [4]. "Conversational ads represent the fastest growing engagement opportunity for brands to reach new and existing audiences," said Chris Conetta, Amazon DSP's director of omnichannel supply [9]. At a $1 billion annualized run rate, the inventory Amazon has agreed to sell is about 1.4% the size of its own ad segment [13]. Neither company disclosed the revenue split [18].
The plausible endings differ in who sets the price. The pilot stays small, and Amazon becomes another intermediary of the sort OpenAI was already selling through [8]. Or Amazon's platform becomes the main route to ChatGPT inventory, and OpenAI chases $100 billion without ever holding the advertiser contract [7]. Or OpenAI takes the budgets now and reprices later, because it kept the system that decides which ads appear and where, and selection sets the clearing price [3]. I'd expect the third, and the evidence behind that is one pilot with one named brand, limited to select U.S. advertisers [1][2]. If a year from now most ChatGPT ad spend arrives through Amazon DSP while OpenAI's own self-serve channel has stopped growing, the pricing power sits with whoever sells the demand [19].
What to watch
- Whether OpenAI opens the same programmatic route to other demand-side platforms or leaves Amazon DSP as the only one.
- Any disclosure of take rate or revenue split as the pilot moves beyond select U.S. advertisers.
- Whether Amazon lets its retail purchase signals inform targeting or attribution on ChatGPT placements.