
AI visibility is a topic-level game: A study of 50,000 brands in ChatGPT
We tracked how often brands actually get named in ChatGPT answers across 1,094 US categories, in a joint study with Kevin Indig and Growth Memo (Jan-June 2026, 50,000+ brands, 600,000+ citations). The most popular topics turned out to be the least owned ones.
The numbers:
- Only 15.2% of categories have a clear owner (highest mention share, in 4+ of 5 prompts, 5+ point lead). 31.2% have an emerging leader with no real margin. 53.7% are wide open.
- High-volume topics (98% of AI search volume) had a clear owner only 11.3% of the time, vs. 19% for niche topics. The categories everyone's fighting over are the least settled.
- Traditional SEO strength barely predicts who wins. Category owners had higher branded search volume in just 55.7% of pairs, more organic traffic in 48.4%, higher Authority Score in 52.5%. Nearly half of runners-up beat the "winner" on at least one SEO metric.
- Lead size determines durability. A 5+ point lead held 90.4% of the time month over month. Categories that flipped had a median lead of just 1.3 points beforehand.
Strong SEO helps you show up, but once several brands are in the running, deep coverage of the specific topic is what turns you from runner-up to owner.
How to start winning at the topic level
Winning one prompt isn't the same as owning the category. If you want to actually move on this:
- Identify the topics your customers are already asking about, where you have a real stake in the answer.
- Check your current standing before you commit resources: know if you're starting from zero or building on something.
- Concentrate on 2-3 categories instead of spreading across everything. Depth beats breadth here.
- Build authority on two fronts: content that actually covers the category (not just one prompt), and mentions in the sources ChatGPT already cites — Reddit threads, reviews, industry publications, expert commentary.
The shift underneath all of this is simple. Search has become a topic-level game, and topic ownership is the metric that matters across traditional and AI-powered search. Your share of a topic, your competitors' share, and the gap between them.
The brands that start treating topics as the unit of their strategy will be the ones best positioned to build and defend brand visibility over time 🔥