What changed: Meta launched a new feature on Monday, October 19 that lets advertisers choose a specific age range and gender audience for each ad creative within a single ad set.
Who is affected
Advertisers and Marketing API partners managing ads through Meta's Marketing API.
What it means for your business
For businesses advertising on Meta, this means they can now point different creatives within the same ad set toward different age and gender segments instead of targeting the whole ad set uniformly.
What to do
Test this feature in your ad account by assigning the most suitable age range and gender to each creative within an ad set; if you use the Marketing API, review the updated adsets, ads, and adcreatives endpoints.
When it takes effect
According to the source, the feature went live on Monday, October 19; the source does not state the year.
Source: https://developers.facebook.com/blog/post/2026/10/19/choose-an-audience-for-each-ad-creative/