Top 50 ChatGPT advertisers, ranked by placements
The 50 brands placing the most ads inside ChatGPT, ranked by share of voice with a one-line read on each.
The top ChatGPT advertisers by placement volume are Mastercard (3,490), Cloudflare (2,633), and Monday.com (2,368). Together those three hold about 12% of the 73,720 placements we have tracked across 2,210 advertisers. The full top 50, listed below, is dominated by B2B software, security, and finance brands, which together explain most of ChatGPT's current ad inventory.
ChatGPT is not the consumer-brand channel people expected. Out of 2,210 advertisers, the top 50 is mostly B2B SaaS, security, and finance, and just 50 of those 2,210 brands control 54% of all placements.
Just 50 advertisers out of 2,210 control 54% of all placements. The remaining 46% is split across 2,160 brands, mostly long tail. If you are not in the top 50 yet, you are competing for the crumbs at the moment.
What the rankings actually show
The top of the table is dominated by a few well-known names. Mastercard and Cloudflare together hold about 8% of all placements, and the top five (adding Monday.com, Salesforce, and BestMoney) hold about 16%. These are not just large companies; they are companies that recognized early that ChatGPT answers are now a high-intent surface for mid-funnel discovery, where a buyer typing a software comparison question is closer to a decision than they would be on a generic display network.
From rank six down to about 25, the list shifts from global brands to a familiar B2B crowd: Capterra, ZoomInfo, HiBob, SAP, Planhat, AirOps, Carta, RingCentral, and CrowdStrike. Most of these companies sell into IT, security, HR, or operations. They are the same categories that already dominate B2B intent media, and they have extended that playbook into ChatGPT.
From rank 26 down, the picture gets more interesting. We see identity and compliance vendors (OneTrust, Drata, SailPoint, SuperGRC, Corp), runtime and dev tools (Cast AI, Teleport, Greptile, Digital Ocean, ClickUp), data and proxy platforms (Oxylabs), and finance-adjacent services (Fidelity Investments, ADP, Intuit Enterprise Suite). Outside that core sit home services (Angi), staffing (Global Squirrels), and retail investing (Robinhood). The mix says more about who is buying than about who ChatGPT users are.
Notice what is missing. CPG, food, fashion, beauty, consumer electronics, and travel brands barely crack the top 50. Those verticals still exist inside ChatGPT ads, but they appear far lower in the rankings, which suggests consumer goods CMOs and DTC founders have not yet shown up at scale. The current winners are B2B SaaS, finance, and security brands.
Where these advertisers cluster
The biggest niche, Enterprise & Fintech with 2,562 ads and 895 advertisers, is essentially a directory of the same SaaS, security, and finance names already filling the top 50. The next tier, SaaS & Productivity (2,126 ads, 786 advertisers), Real Estate (1,288, 617), Email Marketing & CRM (1,260, 577), Crypto & Investing (1,245, 475), and Cloud & DevOps (1,239, 486), all share that buyer. These seven niches lead the index by a wide margin, and the remaining 51 categories, from automotive and gaming to eyewear and pet care, spread the rest.
Concentration runs in two directions. The top 50 advertisers take 54% of placements. A small set of B2B niches carries the bulk of all ads. Most niches are still long tail: Enterprise & Fintech averages under 3 ads per advertiser across 895 brands.
Beyond the top 50
The list above is the headline view: who has spent the most on ChatGPT ads. Below that headline, the index still spans everything from Credit Cards (39 advertisers on 84 ads) to Pet Care (4 advertisers on 4 ads), Insurance (5 advertisers on 8 ads), and Smart Home Devices (4 advertisers on 5 ads). Those segments are real, but thin: outside the 50 names above, the remaining 2,160 advertisers average about 16 placements each, and most appear in only a handful of prompts. Rankings shift on the live index as new advertisers enter and incumbents rebalance.
To explore any individual advertiser's page, including the prompts that trigger them, the niches they appear in, and a trend of their share of voice, head to the advertisers directory. For competitive sweeps (who is bidding for prompts in your category, which prompts you are missing), the paid intelligence hub gives you the underlying data. The free library holds long-form reports like this one.
If your product is not B2B software, finance, or security, you are not in the top 50. Yet.
We probe ChatGPT with realistic consumer prompts and capture the sponsored ad cards it returns — every creative, the triggering prompt, and the advertiser. Figures reflect our captured sample, not OpenAI's internal data. Explore the live ad library and market intelligence.