AI-content and visibility vendor whose 'ghost citations' study measured how often engines use a source without naming it.
One item, and a term the beat adopted: Writesonic analysed roughly 16 million brand appearances across seven AI answer engines over 30 days and found engines frequently use a source's content without naming the brand — 'ghost citations' — at rates that vary widely by engine: Perplexity omitted the source brand in 52% of citations, Google AI Mode in 49%, ChatGPT in 37%.