Hallucination benchmarks are all over the place in 2026. Depending on which...

https://wiki-coast.win/index.php/The_Reasoning_Tax:_Why_Your_Advanced_LLM_is_Hallucinating_More_Than_You_Expected

Hallucination benchmarks are all over the place in 2026. Depending on which test you run, your model's accuracy shifts wildly. For instance, the HalluHard benchmark shows a 30.2% error rate even with web search enabled