OpenAI eliminates 25,000‑user floor for ChatGPT ad exclusion audiences
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| Source: Mastodon | Original article
OpenAI removes the 25,000‑user minimum for ChatGPT ad‑exclusion audiences, letting lists grow to 5 million members and accept Google Advertising IDs.
OpenAI has lifted the 25,000‑user minimum that previously blocked custom exclusion audiences in its ChatGPT Ads platform. The change, announced in updated help‑centre documentation, means advertisers can now upload lists that match as few as a single user, with audience sizes able to exceed five million members and the option to include Google Advertising IDs.
The move reshapes how marketers can steer ChatGPT‑powered campaigns. Until now, the floor forced advertisers—especially small and regional businesses—to amass large, often unwieldy data sets before they could exclude certain users, limiting the granularity of targeting. By removing the barrier, OpenAI opens the door to more precise audience refinement, potentially improving ad relevance while also raising questions about data privacy and the handling of identifiers such as Google Advertising IDs.
OpenAI also hinted at the next feature rollout: an impression‑billed campaign type that will optimise for view‑through conversions. If delivered, this model would shift billing from clicks to the number of times an ad is seen, rewarding advertisers for brand exposure that later leads to conversions. The combination of finer exclusion controls and a new billing structure could make ChatGPT Ads more attractive to both large brands and niche players seeking cost‑effective reach.
Stakeholders should watch for the official launch of the impression‑billed option and any accompanying guidance on permissible data use. Regulators in the EU and Nordic markets may scrutinise how the platform balances expanded targeting capabilities with privacy safeguards. Advertisers will also be keen to see early performance data, which will indicate whether the lowered floor translates into measurable ROI or simply adds complexity to campaign management.
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