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

https://www.stall-bookmarks.win/hallucination-rates-depend-on-your-benchmark-whether-using-vectara-hhem-or

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