Week of Jul 13–20, 2026

The ChatGPT Ads Share of Search Index

Adthena's weekly snapshot of which brands are advertising inside ChatGPT, and on what prompts.

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Distinct advertisers observediEvery unique brand Adthena Cerebro observed running an ad in ChatGPT this week, across all monitored prompts and markets.
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Markets coverediUS, UK and Australia are tracked in detail. Other countries appear in the data but at too low a volume for a standalone cut yet.
Find any brand in this week's index

Market snapshot: ChatGPT Ads advertisers by marketiUse this to benchmark how crowded your market is and how visible the leading advertisers already are, then start a free trial to see exactly where your own brand ranks.

Distinct advertisers and competitive saturation by market. Many advertisers run across multiple markets simultaneously.

Top ChatGPT Ads advertisers by visibilityiUse this to see who's already winning visibility in your market. If a competitor is ranked here and you're not, that's a gap you can start closing today.

Ranked by visibility % within the selected market. Filter by market.

# Advertiser Visibility ↓ Markets

Showing top 10 by visibility %. "All markets" blends visibility across every tracked market; each market tab shows visibility within that market only. Data: Jul 13–20, 2026 · Engine: ChatGPT

Most contested prompts by market

The 5 prompts within each market where the most unique advertisers competed for visibility. Scoped per market, so advertisers in different countries are never counted as competing on the same prompt.

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Showing top 5 prompts per market by unique advertiser count within that market. Data: Jul 13–20, 2026.

this week's spotlight · Jul 13–20, 2026

FAQ & methodology

How the index is built and what the numbers mean.

How is "Visibility %" calculated?
Each advertiser's Visibility % = the number of prompts we've seen that advertiser appear on, divided by the total number of prompts in the dataset (for the selected scope: a single market, or all markets combined).
Why only US, UK and Australia?
These three markets carry the large majority of observed ad activity this week. Other countries are present, but at a much lower rate for now.
How often is this updated?
Insights are refreshed every week, but you can test the free trial to see daily data.

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