Ahrefs data shows that Google’s AI Mode and AI Overviews usually agree on the meaning of an answer but rarely cite the same sources: the same URLs appear only ~14% of the time, even though responses have ~86% semantic similarity. AI Mode answers are longer, include more entities and brands, and often introduce additional sources, while AI Overviews lean more on concise formats like video. The key takeaway for SEOs: visibility in AI Overviews does not guarantee visibility in AI Mode, these are separate AI surfaces and need to be tracked and optimized independently.