Multi-model stacks balance cost and reasoning, but they aren't magic. Swapping...

https://www.easybookmarkings.win/using-multiple-models-helps-catch-errors-and-leverage-unique-strengths-but-it

Multi-model stacks balance cost and reasoning, but they aren't magic. Swapping models helps fix specific failure modes, yet synthesis can hide critical dissent or leak data across providers. Don't blindly aggregate outputs. Keep your eyes on the logs.