In 2026, no single "hallucination rate" exists. Whether you use Vectara’s HHEM...

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

In 2026, no single "hallucination rate" exists. Whether you use Vectara’s HHEM or AA-Omniscience depends on your needs. One model might show 5% error while another hits 20%. Given $67.4 billion in annual data losses, choosing the right benchmark is vital