IBM Research: LLM Routing is a Systems-Optimization Problem
dl_weekly · x · 2026-07-20
IBM Research argues that Large Language Model (LLM) routing is fundamentally a systems-optimization problem rather than a classification task.
Their findings reveal that due to caching effects, Claude Sonnet costs half as much as GPT-4.1 per task, despite having a higher sticker price.
Related event: IBM Research: LLM Routing is a System Optimization Problem(2 posts)→
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