Hallucination

Hallucinations are the failure mode that defines the gap between LLM demos and production systems. They are not bugs to be fixed once — they are statistical behaviors to be measured continuously and constrained by design. The standard mitigations are: ground answers in retrieved context (RAG), require citations, run an LLM-as-judge over outputs, constrain output schemas, and lower temperature. Eliminating hallucinations entirely is not currently possible; bounding their cost is.