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

https://www.scribd.com/document/1040257449/What-is-the-Columbia-Journalism-Review-citation-test-actually-showing-214602

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