Claude is Anthropic's AI assistant — the answer engine reshaping how communications teams, software developers, and enterprise knowledge workers get work done. EPR's canonical entity profile.
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.
The first independent measurement of how AI engines cite the wire services. GlobeNewswire 31.3%. Business Wire 18.8%. PR Newswire 16.7%. Newsfile and ACCESS Newswire 12.5% each — but both win their target vertical outright.
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.
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.
Five proprietary models. Five distinct citation logics. The category-level reference on who runs AI-mediated discovery — ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews — and the linked playbook for each.
The University of Toronto's definitive audit of GPT-4o, Claude, Perplexity, and Gemini versus Google Search across 1,516 queries. Domain overlap, source typology, content freshness, and the controlled experiment on pre-training versus retrieval bias.
When an AI engine answers a buying question, the brand it names just ran an ad. The brand it omitted paid for the impression. Welcome to AEO.
Citation Share shows who gets mentioned. Agent Share shows who gets picked. In agentic AI buying, that is the only share that matters.