This document is a technical report that addresses the phenomenon known as the 'hallucination tax' in enterprise AI. It outlines three key findings regarding the hallucination rates of AI models in production environments. First, while isolated benchmarks show a decrease in hallucination rates, real-world applications reveal an increase, particularly in high-stakes scenarios. Second, the report emphasizes that the economic implications of hallucinations are significant, as enterprises are charged the same for incorrect outputs as for correct ones. Third, it suggests that the architecture of AI systems, specifically the retrieval and source architecture, is critical for reducing hallucinations. The report concludes with a recommendation for enterprises to adopt source-controlled architecture to improve the reliability of AI outputs. This approach is essential for organizations aiming to scale AI effectively beyond initial pilot projects. The document also includes statistical data and case studies to support its findings.