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  <title>CPD-02: Step-Level LLM Routing, Frugal Cascades &amp; Prefix KV-Caching for COO Unit Economics (Vietnam CPD Upskilling) | ANDYGROVE.SYSTEMS</title>
  <author_name>ANDYGROVE.SYSTEMS Continuing Professional Development &amp; Operations Research Collective</author_name>
  <author_url>https://andygrove.systems/education</author_url>
  <provider_name>ANDYGROVE.SYSTEMS — High Output Operations &amp; Fresh Preprints Upskilling Hub</provider_name>
  <provider_url>https://andygrove.systems</provider_url>
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  <thumbnail_url>https://andygrove.systems/og-card.png</thumbnail_url>
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  <url>https://andygrove.systems/vietnam/cpd-02</url>
  <description>Open-access Continuing Professional Development (7 PDH / CPE / CPD Hrs) for professionals in Vietnam (HCMUT — VNU-HCM (Industrial &amp; Systems Engineering), HUST Hanoi, International University VNU-HCM (ISE), VIASM), built on fresh 2023–2026 preprints (https://andygrove.systems/preprints): Replace naive CFO flat token-price cuts with trajectory step-level routing, immutable prefix KV-caching, and confidence-calibrated cascades that cut inference bills 50–85% without collapsing First-Pass Yield (Y_FPY). | Fresh Preprints: https://andygrove.systems/preprints | 42-Hr CPD Hub: https://andygrove.systems/education (Independent platform; not affiliated with Intel Corporation or the Grove family)</description>
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