Hallucination Rate

Hallucination Rate is the frequency of factually wrong claims about your brand in AI responses.

Hallucination Rate measures the percentage of AI responses about your brand that contain factually false statements — wrong founding date, wrong feature claims, attributed-to-you quotes you never made, fictitious leadership names. Hallucination Rate is the dark twin of Visibility Score: high visibility with high hallucination is materially worse than no visibility. The mitigation is canonical fact pages — a single `/about` page with structured `Organization` schema and clear factual statements that AI engines can lock onto.

Related terms

Visibility Score

Visibility Score is the percentage of monitored prompts where your brand is mentioned across AI engines.

Topical Authority

Topical Authority is the strength of association between your brand and a topic across the web.

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