Score and Disorder: Why LLM Reasoning Needs More Than Accuracy
A model review often begins with a spreadsheet. One column says accuracy. Another says cost. A third says latency. Someone asks whether the model is “good enough.” Someone else points at the benchmark score. A decision is made. Procurement smiles. Compliance does not, but compliance rarely smiles anyway. The problem is not that accuracy is useless. The problem is that accuracy is too small a container for the thing businesses actually want from reasoning systems. A final answer can be correct while the route to that answer is unstable, unnecessarily expensive, locally contradictory, or impossible to reproduce under a harmless rewording of the question. That is not a philosophical inconvenience. It is an operational failure mode waiting politely inside a dashboard. ...