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    <managingEditor>17691281867@163.com (Wenzhuo Huang)</managingEditor>
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      <title>LLM 成本优化实战：从 Token 预算到模型路由</title>
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      <pubDate>Mon, 19 Jan 2026 13:03:00 +0800</pubDate>
      <author>17691281867@163.com (Wenzhuo Huang)</author>
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      <description>我们的 AI 功能上线第一个月，LLM API 账单是 $18,000。通过模型路由、Prompt Caching 和 Batch API，第三个月降到了 $3,200。这篇文章记录具体怎么做到的。</description>
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