Claude 4.1 Opus Hallucination Rate: Is 0% Real or a Trick?

https://reliabless.com/ai-that-works-like-having-five-experts-review-your-decision-simultaneously/

Every week, a new model drops, and the marketing departments scramble to claim the crown of “zero hallucinations.” Most recently, the industry buzz surrounding Claude 4.1 Opus—specifically claims of a 0% hallucination rate—has reached a fever pitch