Evaluating GPT-5.3 Codex for High-Stakes Production: Hallucination Metrics, Tests, and Deployment Paths
https://romeo-wiki.win/index.php/Grok-3_produced_incorrect_citations_in_94%25_of_sampled_outputs_-_how_three_production_incidents_taught_me_zero_hallucination_is_mathematically_impossible
When hallucinations cost money: hard numbers from recent evaluations The data suggests that small percentage differences in hallucination rates quickly translate into large operational and financial risk