OpenAI announces it will introduce advertisements for users of its Free and Go tiers of ChatGPT in the U.S. This move, aimed at diversifying revenue streams amid rising operational costs, partners with Criteo for targeted advertising. Ads will not appear on paid subscriptions, which will remain ad-free. Criteo seeks commitments from advertisers between $50,000 and $100,000 to optimize reach and performance, illustrating a strategic shift to commercial discovery during user interactions.