Claude Changed Its Search Index, And Told No One. So We Measured It.
Claude's default search now uses a different search index. We ran 50 prompts in both modes and found 10% domain overlap. Here's what it means for your brand.
Search the blog
24 results in Data & Studies
GPT-6 Astra Searches 40% Less Than the Model Before It, and Reads Brands Directly Instead
We tested OpenAI's new flagship. It searches the web 40% less than the model it replaced, and the searches it keeps go straight to brand pages, not reviews. Your pricing page is the new front line.
What Separates Brands Gaining AI Visibility From Those Losing It? A 4,670-Brand Study
We tracked 4,670 brands over four months to find which signals moved with AI visibility growth. Citation share showed a 0.41 correlation with visibility change.
Who Loses When You Win in AI Search? A Study of 10.7 Million Answer Changes
We analyzed 10.7 million AI answer changes to understand brand displacement in AI search. In 90% of brand entries, at least one other brand left.
Do AI Engines Cite the Same Sources? We Studied 161,286 Prompts Across 4 Platforms
We ran 161,286 prompts through ChatGPT, Gemini, Perplexity, and Google AI Overviews and measured how much their citation pools overlap.
The Brand at #1 in AI Search Changes 52% of the Time. We Ran 631,999 Prompts to Measure It.
We ran 631,999 prompt-model pairs across 7 AI platforms, from March through June 2026, each prompt repeated a minimum of 10 times.
GPT-5.6 Sol Runs site: Queries on 71% of Its Searches. GPT-5.5 Did 11%.
GPT-5.6 Sol reverses the biggest finding of the GPT-5.5 era: the site: operator is back, on up to 71% of searches. Brand citations, freshness, and answer length all moved with it.
Which Sources Influence AI Answers? 2,000+ Brand Study
We measured citation influence across 2,000+ brands. YouTube (3.19x), Reddit (3.17x), and Gartner (3.15x) deliver 3x lift. Your own website? Just 1.3x.
