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Change stream · OpenAI News

How we built ChatGPT’s novel ad stack for user trust and relevance

21 Oct 2026 · OpenAI

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Learn how OpenAI built ChatGPT’s LLM-powered ad stack to understand conversational intent, keep ads separate from answers, and deliver relevant ads at scale.

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An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

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