Engineers mix models to balance speed and reasoning, or to catch hallucinations...

https://fernandowehn083.timeforchangecounselling.com/why-multi-model-ai-is-not-just-more-words-architecting-for-decision-clarity

Engineers mix models to balance speed and reasoning, or to catch hallucinations via disagreement. But be careful. Auto-synthesis can hide model dissent and leak data across providers. Focus on reliability over hype—don't over-engineer the stack.