中国科学技术大学团队针对上述评估盲区提出了PTE（Prefill Token Equivalents）指标。该指标从硬件执行特性出发，将内部推理与外部工具调用的成本统一到同一物理单位，并基于该指标识别出四种典型的低效推理模式。实验结果表明，准确率与推理成本并非正相关，错误推理路径的硬件成本往往高于正确路径。该成果已收录至 ACL 2026。

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Frequency combs are light sources with a spectrum that comprises a series of sharp, equally spaced lines. The frequencies of these lines are known to a very high degree of accuracy, which makes ...