In 2026, "accuracy" is just marketing noise. Hallucination rates shift wildly...

https://www.adirs-bookmarks.win/by-2026-there-is-no-single-hallucination-rate-for-llms-accuracy-depends

In 2026, "accuracy" is just marketing noise. Hallucination rates shift wildly depending on your chosen benchmark. For example, the HalluHard suite captures a 30.2% failure rate in complex reasoning that simpler tests miss entirely