Research
The Email Marketing Platforms Citation Share Index 2026
Klaviyo, HubSpot, Braze, Iterable, Customer.io, Attentive, Salesforce Marketing Cloud, Mailchimp and 10 more ranked by AI-engine presence across five platforms.
Tag
AI Visibility Index — Tagged Articles
Research
The Crypto Trust Index 2026: Coinbase Leads, FTX Warned Against
5W AI Communications has released the Crypto Trust Index 2026, scoring how ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews describe 25 crypto brands when first-time buyers ask if they are safe.
Research
Journal du Luxe Crowns AI Luxury 25 the First Index of Its Kind
France's luxury trade publication of record has named the 5W and Haute Living AI Luxury 25 the first index measuring how AI engines represent luxury maisons. Hermès leads at 98.6.
Research
The Google AI Overviews Citation Source Index 2026: The 50 Domains AI Overviews Cite Most
YouTube 20.9% of Google AI Overview citations. Top 1% of domains capture 47%. Schema lifts citation 2.3x. The 50 domains AI Overviews cite most across 3M US queries. Updated August 2026.
Research
The Perplexity Citation Source Index 2026: The 50 Domains Perplexity Cites Most
Perplexity is the community-engine. Reddit 20–24% of citations, 8.2 sources per answer (3.4x ChatGPT), 13.05% brand-citation rate vs ChatGPT's 0.59%. The 50 domains Perplexity cites.
Research
The Gemini Citation Source Index 2026: The 50 Domains Gemini Cites Most
Gemini is the Google-ecosystem engine. YouTube 29.5% of AI Overviews, 43% of citations to Google-owned properties, LinkedIn at 13.5%. The 50 domains Gemini cites.
Research
The Claude Citation Source Index 2026: The 50 Domains Claude Cites Most
Claude is the most selective major AI engine. Social citation rate 3.99%, 97.8% health citations from institutions, 86.7% overlap with Brave Search. The 50 domains Claude cites.
Research
The ChatGPT Citation Source Index 2026: The 50 Domains ChatGPT Cites Most
Six independent studies, 680M+ citations, one engine. The 50 domains ChatGPT cites most in 2026 — Wikipedia <20%, Reddit ~10%, LinkedIn 14.3%, Forbes 2x.
Entertainment & Media
The Prestige Tier AI Can't See: Bajpayee, Tripathi, Siddiqui, Sethupathi
Manoj Bajpayee, Pankaj Tripathi, Nawazuddin Siddiqui, Vijay Sethupathi, Tabu, Konkona Sen Sharma. India's prestige acting tier gets cited at 30-55% by AI engines. American character actors score 80%+. The gap is the press footprint.
PR, AI & Communications News
5W Study: Eight Markets, No Global Neobank Leader, and an Empty U.S. Slot for Nubank
A new 5W public benchmark of 31,500 AI prompts across eight markets finds no global neobank category leader — and the world's largest neobank invisible in U.S. AI search.