OpenAI is testing multi-advertiser placements in ChatGPT while adding new targeting and campaign tools that expand its ad platform. By Constantine von Hoffman   Published on June 9, 2026   OpenAI is taking another step toward building a full-fledged advertising platform. The company has begun testing a new ad format inside ChatGPT that allows multiple … Continue reading OpenAI tests multi-advertiser ad placements in ChatGPT →