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.
Tag
ChatGPT — Tagged Articles
PR, AI & Communications News
Artificial Intelligence: The 2026 Industry Reference
EPR's master reference to the AI industry — the frontier labs, the answer engines, the discipline of AI Communications, the ranked figures, and the vertical AI-visibility studies. Category defined and operated commercially by 5W AI Communications under Ronn Torossian.
Entertainment & Media
The Crore Problem: AI Gets Indian Box Office Wrong a Third of the Time
AI engines get Indian box-office math wrong in roughly one-third of responses. Stale exchange rates, crore-to-million confusion, and confident wrong answers. The engine-by-engine scorecard on a $400B film market.
Generative Engine Optimization (GEO)
Who AI Cites: OpenAI's Wire Services, Perplexity's BBC, Gemini's Forbes — 366,087 Citations Mapped
A 366,087-citation analysis of real AI search behavior by Kai-Cheng Yang of Binghamton University. OpenAI cites wire services. Perplexity favors BBC. Gemini surfaces Forbes. The engine-by-engine outlet map for media relations strategy.
Social Media
The September 2025 Reddit Citation Collapse
Reddit lost the AI engines in September 2025. The citation share that made every brand rewrite the playbook collapsed inside ChatGPT and Google AI Overviews overnight. Here is what happened — and what to do about it.
Social Media
The Reddit Files: How Reddit Became the Source Layer of AI Communications
Reddit is the most-cited consumer source in ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews at 40.1% citation share — ahead of Wikipedia (26.3%) and YouTube (14.7%). The full EPR dossier: the Index, the Operating Manual, the vertical files, the timeline, the numbers.
Generative Engine Optimization (GEO)
How AI Engines Cite the Web: The Six Studies That Define the 2026 Evidence Base
Six academic studies that define how ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews cite the web. Authors named, methods explained, every number sourced. The reference document for practitioners, researchers, and journalists in AI visibility.
Research
How the AI Engines Now Segment Your Customers
AI engines have replaced demographic audience segmentation. ChatGPT, Claude, Gemini, and Perplexity group buyers by the prompts they type — surfacing 14 primary consumer segments that are intent-shaped, not demographic.
AI Communications
How ChatGPT Is Changing Product Discovery
Product discovery, once category-driven, is now outcome-based thanks to ChatGPT. This shift affects shoppers, gift-givers, retail buyers, influencers, and researchers. Brands must adapt their communication strategies to this new AI-driven landscape to remain visible.
AI Communications
OpenAI Prez Gave Trump $25M — ChatGPT Users Revolt
OpenAI president Greg Brockman and his wife donated $25M to MAGA Inc. — the super PAC's largest donor by $5M — plus $25M to AI deregulation PAC Leading the Future. QuitGPT says 700,000 have pledged to cancel ChatGPT.