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Model routing (cascade) savings
Estimate savings from sending easy requests to a smaller model and escalating the rest.
GenAI & agentic AIHow it's worked out
- Cost = small-first × small cost + (large-only + escalated) × large cost
- Escalated requests pay for both calls
NoteCheck quality on the routed traffic with an evaluation set; savings mean little if answers get worse.
Source: FrugalGPT (Chen, Zaharia and Zou, 2023); RouteLLM (2024)
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