Hallucination benchmarks are wildly inconsistent in 2026. With HalluHard...

https://mega-wiki.win/index.php/Claude_4.1_Opus_Shows_0%25_Hallucination:_Real_Progress_or_Just_a_Refusal_Tax%3F

Hallucination benchmarks are wildly inconsistent in 2026. With HalluHard tracking a 30.2% error rate even with web search, knowing which metric to trust is tough. We cut through the noise to help you pick the right test for your production agents.