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

https://atavi.com/share/xujf75zu4l72

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