ChatGPT Ads adds customer-list audiences and bid adjustments.
OpenAI now documents campaign inclusion, campaign exclusion, and ad-group bid multipliers for customer or prospect lists.
Check Run the audience check.
Why it matters and sources 2
Who should care
Larger advertisers with enough first-party identifiers to build a ready ChatGPT Ads custom audience.
What to check
Separate lifecycle groups, exclusions, permitted use, audience ownership, and the business outcome before uploading a list or changing a bid.