Grok 4.1 vs Claude Opus 4.5: Opinionated AI vs Controlled Reasoning Models Grok 4.1 and Claude Opus 4.5 represent two sharply different interpretations of what advanced AI should sound like, how it should behave when information is incomplete, and how much responsibility it should take for the conclusions it presents. One model is designed to engage, interpret, and move the conversation forward , even when the ground is uncertain. The other model is designed to slow the conve