In 2026, "hallucination rate" is a moving target. The figure you see depends...

https://touch-wiki.win/index.php/GPT-5.2-thinking_with_web_search_at_38.2%25_%E2%80%93_Is_Web_Search_Overrated%3F

In 2026, "hallucination rate" is a moving target. The figure you see depends entirely on the benchmark used to test it. Comparing Vectara HHEM scores against AA-Omniscience results proves that one size rarely fits all