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LLM Routers, Cascades, and Mixtures Fail in Different Tails

TL;DR — Routers, cascades, and mixtures are usually compared on average cost and quality, but they actually trade different failure tails: routers hide bad decisions silently, cascades make failure visible as latency, and mixtures pay a constant worst-case cost on every request. Picking the right p…

Read the full story at DEV Community — Machine Learning ↗

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  1. 2026-11-04 14:16 · DEV Community — Machine Learning
    LLM Routers, Cascades, and Mixtures Fail in Different Tails

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