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

https://www.demilked.com/author/kevin-cooper01/

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