Glossary

Hallucination

A hallucination is a fluent model output that is false or unsupported. In operations, the risk is not poetry — it is inventing a booking, a policy, or a customer fact. Mitigation is retrieval, tool checks, human approval on external actions, and evaluation sets that catch known failure modes.

Why it matters to your operation

Treat hallucination as an operational risk you design against, not a surprise.

Related terms

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