In 2026, there’s no "master" hallucination rate. Vectara’s HHEM and...

https://blogfreely.net/weyladikle/what-web-search-fixes-and-what-it-doesnt-in-rag-hallucinations

In 2026, there’s no "master" hallucination rate. Vectara’s HHEM and AA-Omniscience yield different results by measuring different failure modes. With $67 billion lost to AI errors annually, choosing the right benchmark is a critical business decision