The SEOTracky AI Visibility Index 2026 is here. Based on more than 261 million prompts captured across ChatGPT, Gemini, Perplexity and Google AI Overviews over a 90-day window, the report ranks the brands that dominate generative search in 41 industries.
Top-line findings: brand concentration inside LLM answers is now higher than in classic Google search. In half of the categories we tracked, the top three brands capture more than 62% of all mentions — significantly above the 47% top-three concentration on Google's first page for the same queries.
The fastest-growing brands of the year are companies that invested early in source-authority building — publishing original research, contributing to industry datasets and being cited by neutral publications. Pure SEO tactics like keyword volume optimization show diminishing returns inside LLMs.
Download the full report for category-level rankings across SaaS, e-commerce, fintech, healthcare, travel, automotive and 35 other industries — plus a step-by-step playbook for improving your own AI visibility score.