Intelligent Model Routing Cuts AI Costs 85% While Maintaining 95% of GPT-4 Quality: RouteLLM Production Pattern with 85/10/5 Budget Split

Swfte AI·high signal

Research from UC Berkeley and Canva shows RouteLLM achieves 85% cost reduction on MT Bench while keeping 95% of GPT-4 performance. The production pattern: route 85% of queries to budget-tier models, 10% to balanced, 5% to frontier — yielding ~92% savings. Practical case study: routing 4 of 7 agent steps to mid-tier and 2 to small models dropped per-document cost from $1.40 to $0.34. This is the highest-ROI optimization for any multi-agent pipeline.