ChatGPT's ads orchestrator: a post-trained LLM calling six ad-delivery tools
OpenAIDevs · x · 2026-10-22
OpenAI shared more detail on ChatGPT's ads orchestrator: a post-trained LLM that takes conversation context and user profile, and calls six ad-delivery tools — retrieval, estimation of relevance, event predictions, eligibility, pacing & budgets, and auction & pricing — to find ads balancing user and advertiser value.
The orchestrator first turns a conversation into multiple intents by exploring users' possible needs; embedding-based search surfaces candidate ads, eligibility and relevance checks narrow the pool, and the auction tool handles final selection and pricing. This post supplements the earlier architecture overview.
Related event: OpenAI Details ChatGPT Ads Stack: LLM Orchestrator and Six-Tool Bidding(3 posts)→
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