In 2026, "accuracy" is a variable, not a constant. Hallucination rates swing...

https://www.cool-bookmarks.win/by-2026-measuring-ai-reliability-depends-entirely-on-your-benchmark-whether

In 2026, "accuracy" is a variable, not a constant. Hallucination rates swing wildly between benchmarks like Vectara HHEM and AA-Omniscience. This inconsistency is why enterprises still lose an estimated $67.4 billion annually to unreliable model outputs