Sonnet 5.5 登顶 Coding Agent Index，xhigh 档省 77% 成本
写代码跑 agent 的可以看看这份测试：Sonnet 5.5 开 max 档最强但贵 4 倍，xhigh 档 63 分只低 5 分，省钱首选。
Anthropic 的 Sonnet 5.5 在 Artificial Analysis 的 Coding Agent Index 中以 max 档拿到 68 分登顶。xhigh 档为 63 分，每任务成本 $3.33，仅为 max 档 $14.19 的不到四分之一，省 77% 成本。max 档生成 4.8 倍输出 token、使用 3.4 倍回合数，三榜单均有提升，其中 Terminal-Bench 4.0 从 58.1% 升至 66.2%。
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%.
