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How It Works

Brand Hallucination

When an AI system states something about a brand that is not true: an invented price, a discontinued product, a merger that never happened. It usually means the model found too little consistent information and filled the gap. The failure is quiet, because a fabricated detail reads exactly like a correct one, and it repeats at scale until the underlying sources change. Checking for it is not the same as checking whether you are mentioned: a brand can be named in every answer and described wrongly in half of them.

GEO Glossary