ChatGPT Advertising
Bram Van der Hallen’s newsletter curates ChatGPT advertising developments, platform controls and measurement updates.
Why read it
Follow ChatGPT Ads product changes with curated links and practitioner context.
Audience & score
Public snapshotA snapshot of audience size and visible engagement, not a quality rating.
Where the figures come from
Public subscriber and engagement figures have not been verified. Unavailable figures are not zero.
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
Formats, measurement and campaign-control updates, with source links.
About these edition previews
Selected original October 2026 roundup.
Reading notes checked .
Our notes & sources
Newsletter identity and author verified in the original LinkedIn edition. Publication cadence not stated; edition date does not indicate newsletter launch.
Source checked .
ChatGPT Advertising is Bram Van der Hallen’s newsletter about developments in ChatGPT advertising. It brings product updates and practical context together, with links to underlying announcements and documentation.
The October 2026 edition covers advertising formats, measurement connections, conversion signals, brand-suitability controls and audiences. Readers should follow the original documentation for eligibility and rollout limits.
This directory entry links to the recurring newsletter and its original author. It does not republish the edition or treat every announcement as generally available.
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: undated authorship evidence, counted in lifetime rankings only. View attribution