In 2026, there is no single "hallucination score." Reliability depends entirely...

https://www.mediafire.com/file/ex8a71ev923hbwn/pdf-22694-13739.pdf/file

In 2026, there is no single "hallucination score." Reliability depends entirely on your chosen benchmark. Comparing Vectara HHEM against AA-Omniscience reveals how differently models handle grounded reasoning versus raw creative generation