Why GPT-5.2 xhigh setting shows a 10.8% hallucination rate — a practical, skeptical breakdown

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1) Why the 10.8% number matters: what this list will give you If you saw a headline that "GPT-5.2 xhigh" returns a 10.8% hallucination rate, you should not panic and you should not ignore it. That figure is a signal, not a verdict