StackAdapt has partnered with OpenAI to take part in the advertising pilot now running inside ChatGPT, making it one of the first programmatic players with a direct route into the conversational AI platform.

The deal gives StackAdapt advertisers placement options within ChatGPT's ad surfaces, which OpenAI opened to a limited group of partners as it tests monetisation beyond subscription revenue.

What do we know so far?

Details remain thin. Neither company has published pricing, launch markets, or ad formats. OpenAI has been selective about which partners join the pilot, and StackAdapt's inclusion signals the demand-side platform is moving early on AI-native inventory.

Who is StackAdapt?

StackAdapt is a programmatic advertising platform used by marketers to buy display, video, native and connected TV inventory. The company positions itself as a self-serve alternative to the larger agency-held trading desks, with a machine-learning buying engine at its core.

Its media agency relationships in markets like Australia — where trade title Mi3 broke the partnership news — suggest local advertisers may get access to ChatGPT inventory through existing StackAdapt seats.

Why does ChatGPT advertising matter?

ChatGPT reaches hundreds of millions of users and until now has carried no ads. OpenAI confirmed late in 2024 that advertising was one option under consideration, and the pilot marks the first concrete step toward commercial placements inside the assistant.

For advertisers, the appeal is attention: users arrive with intent-rich queries rather than passive browsing. For publishers and the broader ad market, the shift raises harder questions about how AI answers will route traffic and clicks.

What stays unconfirmed?

• Launch date for general availability
• Which markets get ChatGPT ad inventory first
• Ad formats, auction mechanics and pricing floors
• Whether other DSPs will gain pilot access

StackAdapt and OpenAI have not disclosed financial terms. More detail is expected as the pilot expands beyond its initial partner group.