Sonnet 5.5 登顶 Coding Agent Index，xhigh 档以不到四分之一成本换 5.5 分差距
Sonnet 5.5 tops the Coding Agent Index at max effort, while xhigh offers an attractive cost-performance trade-off: 63 points versus 68 for less than a quarter o
Artificial Analysis 的 Coding Agent Index 显示，Anthropic 的 Sonnet 5.5 在 Claude Code 中以 max 档拿到 68 分登顶，xhigh 档为 63 分。单任务成本从 max 的 14.19 美元降至 xhigh 的 3.33 美元，降幅 77%，代价是少 5.5 个 Index 分。max 档输出 token 量为 xhigh 的 4.8 倍、轮数为 3.4 倍，三项基准分数均有提升，其中 Terminal-Bench 4.0 从 58.1% 升至 66.2%。
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同一模型在 max 与 xhigh 两档下的成本与得分对比，为 Claude Code 用户选择推理档位提供了可参考的数据。
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Sonnet 5.5 tops the Coding Agent Index at max effort, while xhigh offers an attractive cost-performance trade-off: 63 points versus 68 for less than a quarter of the cost
In Claude Code, @AnthropicAI’s Sonnet 5.5 scores 68 at max versus 63 at xhigh. At $14.19 versus $3.33 per task, choosing xhigh cuts cost by 77% for 5.5 fewer Index points.
Max generates 4.8× as many output tokens and takes 3.4× as many turns. It improves all three benchmark scores, with the largest gain on Terminal-Bench 4.0: 58.1% → 66.2%.