Semrush Released 2026 AI Visibility Index Data
The index highlights how major AI platforms differ in their reliance on specific domains for search citations.
Updated on Oct. 13, 2026 in Artificial Intelligence
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Semrush has released its 2026 AI Visibility Index, providing insights into citation trends for ChatGPT, Gemini, Google AI Mode, and Google AI Overviews. The analysis reveals distinct differences in how these platforms prioritize news and medical domains when answering user prompts.
Why it matters
Understanding which sources AI platforms prioritize is critical for publishers and businesses aiming to capture traffic from generative search. The index suggests that AI-referred traffic provides significantly higher conversion rates, making visibility a key driver of digital growth.
Semrush analyzed 2.5 million UK prompts and 25 million US prompts monthly across 22 industry categories. The data shows that AI-referred traffic converts 60% better than other traffic sources.
The players
Semrush
This is a software-as-a-service company specializing in online visibility management and content marketing analytics.
ChatGPT
This is a generative artificial intelligence chatbot platform developed by OpenAI.
Gemini
This is a multimodal large language model and AI chatbot developed by Google.
Profound
This is an artificial intelligence startup that recently achieved a 1.8 billion dollar valuation following a funding round.
The details
ChatGPT leaned heavily on news sites, which comprised nearly 30% of its citations in the UK, while Google AI Overviews prioritized medical references and video streaming platforms. Across all platforms, there was significant overlap, with most sharing over 60 of their top 100 mentioned brands in the UK market.
Timeline
Data collection for the index occurred from January 2026 to July 2026.
A brand visibility framework was launched in April 2026.
Profound raised 180 million dollars in September 2026.
The Tech Race
The Semrush AI Visibility Index provides a baseline for tracking how generative search engines shift traffic away from traditional organic search results. This data signals a broader industry transition toward AI-driven discovery, replacing standard search engine results pages with curated citations.
Users can expect more curated, citation-heavy responses as platforms like Google continue to prioritize specific domains in AI Overviews. Businesses and content creators must adapt to these citation patterns, as AI-referred visits currently offer a 60% higher conversion rate than traditional web traffic.
The takeaway
As generative AI becomes a primary discovery tool, the source domains cited by these models will heavily influence which websites capture high-intent traffic. Publishers should monitor these visibility trends to understand how platform preferences impact their overall digital outreach strategy.
Further reading
For more information on how machines interpret web content, visit Artificial Intelligence.
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Do you trust information provided by AI tools as much as traditional news or medical websites?
