The Hallucination Tax
How much of your AI is defensible?
Most enterprises see one line on their AI invoice: total spend. This calculator splits it into two — defensible spend, and the hallucination tax. In under three minutes, get a directional read on what fraction of your AI bill is producing auditable, source-grounded outputs.
33%
OpenAI o3 hallucination rate on PersonQA — double its predecessor o1 (16%). Source: OpenAI system card, April 2025.
100x
Growth in enterprise AI token consumption over two years — while unit prices fell 10x. Jevons paradox in inference. Source: VentureBeat / Nutanix, April 2026.
5.5%
Share of enterprises seeing significant financial value from AI. The other 94.5% are in pilot purgatory. Source: McKinsey State of AI, 2025.