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    <title>同一个模型，换个 Harness，为什么表现会变？</title>
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    <description>同一个 GPT 模型，为什么换了运行环境，任务就可能中断、变慢或更难完成？从我们的 OpenCode 与 Codex 使用经历出发，讨论 Harness 如何影响可用性与能力发挥，以及怎样选择更适配的组合。</description>
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