ChatGPT and Google AI Give Completely Different Answers. Your Brand Might Only Exist on One.

If you have checked your brand visibility on one AI platform and felt satisfied with the result, we have some uncomfortable news. Our data shows that the same brand can score radically differently across ChatGPT and Google AI Overview, and optimising for one does not guarantee visibility on the other. Across our dataset of 349 brands and 4,500+ prompt executions, the platform divergence stories are some of the most striking findings we uncovered. The Same Brand, Two Completely Different Scores Here are some of the starkest examples from our data, anonymised but drawn directly from real analyses: A major UK telecoms provider scored just 3% visibility on ChatGPT but 80% on Google AI Overview. When buyers asked ChatGPT for recommendations in their sector, this household name barely appeared. But the same queries on Google AI surfaced them consistently. A tier-1 parcel delivery brand showed the opposite pattern: 100% visibility on ChatGPT but only 40% on Google AI Overview. ChatGPT mentioned them in response to every single buying-intent prompt. Google AI mentioned them in fewer than half. A national cleaning products company scored 64% on ChatGPT but just 12% on Google AI. Five times better performance on one platform than the other. A social entertainment venue brand scored 12% on ChatGPT but 48% on Google AI Overview. Four times more visible on Google than on the conversational AI that millions now use for recommendations. The same brand can have radically different visibility scores across AI platforms Why the Platforms Disagree ChatGPT and Google AI Overview pull from different data sources, use different models, and have different citation behaviours. Understanding these differences matters if you want visibility across both. ChatGPT draws primarily from its training data and tends to favour brands with strong, widely-referenced web content. It gravitates toward entities with clear, authoritative descriptions that appear across multiple sources. If your brand is w