In August 2026, we analyzed 6,560 ChatGPT recommendations across 28 B2B agency and marketing technology categories to compile the EMARKETER AI Visibility Index. The index tracks how often brands are mentioned and how they rank against competitors. This is the first edition for B2B agencies and marketing technology, establishing the baseline against which future shifts will be measured. This article showcases nine categories, but overall mention rates count recommendations across all 28 categories we track.

Google topped the overall leaderboard with nearly twice Adobe’s mention rate. It appeared in 15% of recommendations, compared with 8% for No. 2 Adobe. Google also led two of the nine categories shown below: programmatic ad buying platforms and web and app analytics platforms. Its 84% rate in programmatic ad buying was the highest for any brand in any category shown.

Ad agencies and media agencies had the lowest leader rates of the nine categories shown. Ogilvy led ad agencies with a 19% mention rate, and Publicis Groupe led media agencies with 20%. Publicis’ position was the least secure, with Dentsu and OMD close behind it.

Web and app analytics platforms had the highest floor of any category shown. Google led the category with 68%, but even No. 5 PostHog appeared in 44% of recommendations.

Sociallyin more than doubled the runner-up’s mention rate in the social media agencies category. It appeared in 54% of social media agency recommendations, compared with 24% for No. 2 Lyfe Marketing.

LiveRamp led the customer data and identity platforms category, ahead of Adobe and Salesforce. LiveRamp appeared in 47% recommendations in this category, compared with 42% for Adobe and 38% for Salesforce.

About EMARKETER’s AI Visibility Index

Our AI Visibility Index is based on a structured analysis of ChatGPT and Gemini recommendations. This article analyzed ChatGPT recommendations only, but upcoming reports and articles will also include Google Gemini. Each query uses standardized prompts (e.g., “best advertising agency” or “customer data platform for audience targeting”) spanning product type, attributes, consumer needs, target audience, and price tier. Prompts are built with EMARKETER analysts and researchers and are validated with search volume, so every brand is measured against the same benchmark.

Want a closer look at the AI Visibility Index? EMARKETER PRO subscribers can access in-depth reports featuring further category breakouts, data cuts, and analysis, while PRO+ subscribers can access the complete data set, including monthly updates across every category cut, in the live dashboard.

To learn more about how EMARKETER’s AI Visibility Index can help your brand, including advisory insights that pinpoint what’s shaping your visibility, visit our AI Visibility Index hub.