ChatGPT and Gemini Agree on Top Local Business in Only 4.2% of Searches

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A study by Steady Demand analyzed 1,487 local-service queries across 50 U.S. cities and 10 service categories, finding that ChatGPT and Gemini recommended the same top business in just 4.2% of identical searches. The two AI assistants also drew on different source ecosystems, with Gemini leaning more on business websites while ChatGPT relied more heavily on Reddit and traditional directories. Repeated queries revealed further instability, with cited sources aligning only about 40% of the time — a pattern the researchers call 'grounding drift.' By contrast, Google's local-pack top results reappeared roughly 90% of the time, highlighting how much more variable AI-generated recommendations can be. The findings suggest that checking a brand's visibility on one AI assistant offers little insight into how it appears on others, complicating local marketing strategies.

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