Short answer
In Ads Manager go to Conversions > Data Sources > Create, choose Google Analytics 4, sign in with a Google account that has at least Viewer access, approve read-only access and select the property. It is a beta that needs your account manager; event mapping is "coming soon", and the totals cover all traffic, not ChatGPT conversions.
Steps
- Conversions > Data Sources > Create
- Select Google Analytics 4 and review data terms
- Sign in with a Google account with Viewer or higher on the property
- Approve read-only access
- Select and confirm the property
Limits
- One GA4 connection and one property per advertiser account
- First report covers the last 30 completed days
- Totals include all traffic sources and aren't ROAS
- Google Workspace may block third-party apps; don't bypass warnings
Questions
Should we still tag URLs with UTMs?
Yes. UTMs are how GA4 attributes ChatGPT ad sessions on its side.
Facts checked against the sources below on 12 October 2026. Platforms change quickly: if something here no longer matches what you see, tell us and we will update it.
