NeuroRank® Research · The AI Visibility Index · 2026 Edition
Winning AI search recommendations in 2026.
A study of 122 brands across ChatGPT, Gemini, Claude, and Perplexity: how often each model includes a brand when the prompt names it, and how often when it does not. The AI Visibility Index for 2026, and the AI search statistics behind it.
September 22, 2026
Ambika Sharma
Founder at Pulp Strategy Communications and NeuroRank.
Ask an AI model about a brand by name and it will usually include it. Ask for the best options in a category without naming anyone, and inclusion falls sharply. Across 122 brands, High inclusion is 56.2 percent when the prompt names the brand and 17.8 percent when it does not. The full statistics, by sector and by model, are on the AI search statistics 2026 research page.
What the Study Found
High inclusion when the prompt does not name the brand
High inclusion when the prompt names the brand
Cross-model prompt volume across ChatGPT, Gemini, Claude, and Perplexity Inside the Report
Inside the Report
A look at the Pages
Audience
Written for the people accountable for how the brand is represented when a customer asks an assistant.
See how four AI models include brands when a prompt names them and when it does not, sector by sector.
See where High inclusion is weakest by prompt class, and how content readiness is associated with inclusion.
See the scoped citation sample, where third-party sources made up 64.6 percent of logged citations in four financial services audits.
See how often brands appear when the prompt names no brand: 17.8 percent across the study.
See which kinds of decision facts the captured answers got wrong in a four-audit financial services sample, from fees and rates to availability.
One figure for where your category stands on discovery, across nine sectors.
Methodology
122 brands across nine sectors and 7,580 unique prompts. Per-model figures use the 83 brands with per-model data; the other 39 have combined results only.
Each brand was audited across clusters of ten prompts, with 5,500 fresh-token prompt runs per prompt cluster, per country, between March and May 2026. Cross-model prompt volume: 4,169,000 prompt runs across ChatGPT, Gemini, Claude, and Perplexity.
Each prompt and model received one High, Medium, or Low inclusion rating. Clear and Strong map to High; Sparse, Weak, Absent, and Minimal map to Low; Medium remains Medium. Where a response failed the brand, the applicable ORHL conditions were recorded: Omitted, Replaced, Hallucinated, or Zero Leads.
Brand-named and brand-not-named prompts are separate prompt pools, so comparisons between them are state comparisons. The models were not tested on identical prompt panels, so cross-model differences are directional. Correlations are observed associations, not causes. The study measures how AI models represented brands; it does not measure sales, pipeline, traffic, conversion, or customer trust. Brands are reported in aggregate, not as a league table.
Method, scope and how to use the findings.
122 brands across nine sectors. Per-model figures use the 83 brands with per-model data; the other 39 have combined results only. Findings are reported in aggregate, not as a league table of named brands.
How often ChatGPT, Gemini, Claude, and Perplexity include a brand at the High level, on prompts that name the brand and on prompts that do not. It describes the category, not individual companies, and is refreshed annually.
Recognition is High inclusion when the prompt names the brand: 56.2 percent. Discovery is High inclusion when the prompt names no brand: 17.8 percent. The two figures come from separate prompt pools, so the 38.4-point difference is a comparison of states.
No. Of the 82 brands measured in both prompt states, 51 reach at least 50 percent High inclusion when the prompt names them, and 3 do when it does not. A brand-named score describes the easier of the two states.
Shortlist and recommendation prompts, which ask a model to name options in a category. They are 38.6 percent of unique prompts, only 5.9 percent of them name the audited brand, and High inclusion on those rows is 20.0 percent.
7,580 unique prompts were run across ChatGPT, Gemini, Claude, and Perplexity between March and May 2026, at 5,500 fresh-token prompt runs per prompt cluster, per country: 4,169,000 prompt runs in total. Each prompt and model received one High, Medium, or Low inclusion rating.
So no answer was shaped by earlier conversation. Each run used a fresh authentication token and a new, context-isolated session, with no conversation history carried forward between runs.
ChatGPT, Gemini, Claude, and Perplexity, plus Combined Synthesis, an aggregate view across the four. Combined Synthesis is not a fifth model.
Because the models disagree. Among the 63 brands measured on all four models, the median gap between a brand's best and worst model is 33.3 points, and 41 of the 63 swing by at least 30 points.
No. The models were not tested on identical prompt panels, so the report does not rank them. It reports how widely they disagree on the same brands.
Each prompt and model receives one High, Medium, or Low inclusion rating. Where a response fails the brand, the applicable ORHL conditions are recorded: Omitted, Replaced, Hallucinated, or Zero Leads.
No. Findings are reported in aggregate across the category. The AI Visibility Index measures the field, not named companies, so no individual brand is identified or ranked publicly.
Yes. The research is also published by sector, with editions for financial services, B2B, B2C, consumer and retail, healthcare, and technology. For your own brand, NeuroRank Lite produces the same output.
They reflect the March to May 2026 audit window. AI systems change between releases, so the figures describe that window and are directional, not a permanent state. The Index is refreshed annually.
Download the full 18-page report from this page. To see the same analysis for your own brand across all four models, run NeuroRank Lite.