Hallucination rates depend on the yardstick. Whether you measure via Vectara...

https://wiki-fusion.win/index.php/Sycophancy-Induced_Hallucination_Rates:_Why_%2222%25_to_94%25%22_Is_Just_the_Start_of_the_Story

Hallucination rates depend on the yardstick. Whether you measure via Vectara HHEM or HalluHard—where models hit 30.2% failure—results vary wildly. In 2026, don’t ask if your AI is accurate; ask which benchmark fits your use case