In 2026, there is no single "hallucination rate" for LLMs; it all depends on...

https://holdenlvxt779.theburnward.com/why-do-multi-turn-chats-repeat-earlier-hallucinations-3-20

In 2026, there is no single "hallucination rate" for LLMs; it all depends on the yardstick you choose. Measuring performance via Vectara’s HHEM yields very different results than the HalluHard suite, often showing a 30