MiniMax's new M3.1 Flash beats DeepSeek and Opus 5 on a key business benchmark at lower cost — but with a high hallucination rate

In other words, when M3.1 Flash failed to provide a correct answer, it overwhelmingly chose to give an incorrect one rather than acknowledge that it did not know.

First reported by VentureBeat. This page is a short excerpt; the full text is theirs.