By 2026, we have learned that hallucination rates are not a single metric....

https://www.deltabookmarks.win/accuracy-benchmarks-in-2026-are-inconsistent-hallucination-rates-swing-wildly

By 2026, we have learned that hallucination rates are not a single metric. Depending on which benchmark you use, the results shift significantly. We looked at the latest data and found that even with web search enabled, models still struggle, hitting a 30