How we built ChatGPT’s novel ad stack for user trust and relevance
OpenAI built an LLM-powered ad stack for ChatGPT that separates ads from answers
OpenAI has revealed the engineering behind ChatGPT's novel advertising system, which uses LLMs to interpret conversational intent and serve relevant ads while keeping them structurally separate from model-generated answers. This marks a significant monetization milestone for OpenAI and sets a design precedent for how AI assistants can integrate advertising without compromising answer integrity. The move signals OpenAI's shift toward ad-supported revenue alongside subscriptions, with direct implications for how the broader industry approaches AI assistant monetization.