ChatGPT’s ad market has launched, but it has not filled up. An index of 580 total observed ads reveals a market dominated by a small number of repeat advertisers and a large share of one-time testers. The advertiser distribution tells you how early you actually are, and the top advertisers by ad count, Lowe’s, Nordstrom, Best Buy, Liberty Mutual, and Insurify, are brands that have made a deliberate commitment while the vast majority of the market watches from the sidelines.

Essential Statistics

• 580 total ads were observed in the ChatGPT ad index, establishing the current scale of the observable market.
• The top 10 advertisers account for 32 percent of all observed ad placements, reflecting high concentration among a small group of committed early movers.
• Top 11 to 25 advertisers represent 23 percent of placements, indicating a second tier of moderately active advertisers.
• One-time advertisers account for 36 percent of all placements, confirming that more than a third of the ad market consists of brands that have tested once and not returned.
• Other advertisers make up the remaining 9 percent of placements.
• Lowe’s leads all advertisers with 25 placements, followed by Nordstrom at 22, Best Buy at 20, Liberty Mutual at 12, and Insurify at 10.

Key Takeaways

• The 36 percent one-time advertiser share is the most important number in this chart. It means the majority of brands that have tested ChatGPT ads have not committed to a sustained presence, leaving the market disproportionately available to consistent early movers.
• The top 10 advertisers controlling 32 percent of placements with only 580 total ads in the market confirms this is a very early auction. Concentration ratios this high in a small total market mean that entering with a consistent presence now is how you join the group setting the standard rather than chasing it.
• The named top advertisers, Lowe’s, Nordstrom, Best Buy, Liberty Mutual, and Insurify, represent retail and insurance brands already applying their traditional paid search playbooks to ChatGPT. Their presence suggests the channel rewards advertisers with existing paid media sophistication.
• The combined top 25 advertiser share at 55 percent means just 25 brands currently control more than half of visible ChatGPT ad inventory. That degree of openness will not last as more advertisers discover the channel and increase frequency.
• One-time advertiser behavior typically reflects test-and-pause strategies driven by uncertainty about ROI, uncertainty the profitability data from this batch suggests is misplaced for most advertisers who actually try the channel.

Actionable Insights

• Commit to a minimum 90-day continuous ChatGPT ad presence rather than a one-time test. The 36 percent one-time advertiser share shows that most brands test once and leave. Staying in the market for 90 days builds the historical performance data your campaigns need to optimize and positions you in the consistent advertiser group rather than the one-time tester group.
• Target best and comparison queries with dedicated campaigns rather than broad keyword matching. The top advertisers in this index are placing their ads deliberately on high-commercial-intent queries.
• Use the top advertiser list as a competitive intelligence signal. Lowe’s, Nordstrom, and Best Buy being the most active ChatGPT advertisers by count tells you which brands are treating this channel seriously. Monitor what queries their ads appear on to identify the commercial query spaces they have prioritized.
• Set a quarterly budget commitment for ChatGPT ads rather than a monthly test budget. The market is small enough now that a consistent quarterly presence builds cumulative auction learning that a one-month test cannot generate. Treat the first 90 days as data collection and the following 90 days as optimization.
• Track your share of voice within the 580-ad market frame rather than using traditional impression share metrics. In a market this small, knowing whether you are in the top 10, top 25, or one-time bucket is more actionable than standard paid search performance benchmarks.

“Five hundred and eighty total ads and 36 percent of them are from brands that only showed up once. This market is not crowded. It is a small group of committed brands and a large group of browsers who tested once and left. The window to own consistent presence in this auction before it fills up is right now.” – Neil Patel