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Single ChatGPT Mentions Don't Reflect True Brand Visibility, Research Finds

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A Search Engine Land analysis published in February 2026 found that running the same prompts on ChatGPT dozens or hundreds of times produces different brand recommendations each time. This non-deterministic behavior means a single AI-generated answer cannot reliably indicate how consistently a brand appears to users. The research extends this concern to other AI platforms including Google AI Overviews, Perplexity, and Gemini, each treated as a separate measurement environment. Marketers are advised to replace one-off screenshots with repeated prompt testing and track mention frequency across a defined set of runs. The findings call for reporting AI brand visibility with confidence intervals rather than treating any single result as a definitive measure of standing.

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