In 2026, there is no single "truth" for hallucination rates; your risk profile...

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

In 2026, there is no single "truth" for hallucination rates; your risk profile depends entirely on the benchmark you choose. While Vectara’s HHEM measures factual grounding, suites like AA-Omniscience prioritize reasoning failures differently