By 2026, "accuracy" is a moving target. Hallucination rates aren't universal;...

https://www.tumblr.com/gladlyradiantsphinx/816924113252859904/stanford-ai-index-why-documented-ai-incidents

By 2026, "accuracy" is a moving target. Hallucination rates aren't universal; they’re tethered to how you measure them. If you test against Vectara HHEM, you get a clean audit of RAG grounding. If you use benchmarks like HalluHard, you might see 30