
ChatGPT Advertising
Bram Van der Hallen curates ChatGPT advertising product updates and practical implications for advertisers.


Why read it
For a concise scan of ChatGPT Ads formats, measurement and campaign controls, with links to the underlying product updates.
Audience & score
Public snapshotA snapshot of audience size and visible engagement, not a quality rating.
Where the figures come from
Checked on the official newsletter page. Counts can change.
Newsletter-specific LinkedIn series-header total and visible edition engagement, checked 18 October 2026. LinkedIn reactions include all reaction types. Missing comment counts remain unverified.
How the newsletter score works
An audience and engagement snapshot, not a quality rating. Version 1 combines up to 25 points for subscriber reach and 75 for visible edition engagement.
Reach = 25 × min(1, log₁₀(1 + subscribers) ÷ log₁₀(100,001)). Engagement = 75 × min(1, median((reactions + comments) ÷ subscribers) ÷ 1%). Add the components and round once. Reach is capped at 100,000 subscribers; median engagement is capped at 1%.
We use the three newest observed editions, all published within 90 days, and a snapshot no more than 30 days old. Missing or approximate counts, or missing exact dates, prevent a score. An edition under seven days old marks the score as an early snapshot. A viral edition alone cannot determine the median.
LinkedIn reactions include likes and other reactions. Comments can include replies; these are not unique readers, email opens or click rates. The denominator is the subscriber count when checked, not at publication. Age, cadence and platform differences limit comparisons. Private email metrics are not inferred.
Example: 10,000 subscribers and three editions with 40, 50 and 500 total reactions plus comments give a median of 0.5%: 20 reach points + 37.5 engagement points = 58 / 100. Choose alphabetical, score or subscriber order. These scores add no contributor leaderboard points.
Explore the editions
Read an edition at the source before you subscribe. Engagement figures are dated public snapshots.
- 01
ChatGPT Ads Updates - October 2026
Bram outlines new visual ad formats, measurement connections, attribution, suitability controls and audience settings for ChatGPT Ads.
51 reactions5 commentsChecked - 02
ChatGPT Ads Updates - June 2026
A June briefing on ChatGPT advertising updates.
29 reactions2 commentsChecked - 03
June 2026 Updates - ChatGPT Ads
An earlier June briefing on ChatGPT advertising updates.
84 reactions15 commentsChecked
About these edition previews
The official LinkedIn series lists three editions, newest first. Exact dates were read on the articles. Only the October issue received a detailed content review; the June descriptions are limited to their visible titles.
Reading notes checked .
Our notes & sources
The October issue links to OpenAI announcements and help pages, but its product descriptions have not been independently audited for republication. The series lists three editions; the two preceding issues are from June despite its advertised monthly cadence. Private email delivery was not tested.
Source checked .
Contributor credit
Each verified author receives 10 points for this newsletter. Co-authors receive their own credit; repeated issues and subscriber counts add no points.
- Bram Van der Hallen: authorship evidenced on . This is not a newsletter launch date. View attribution