Smart Routing, Massive Savings: How One Developer Slashed LLM API Bills by 89%

LLM API costs represent a major expense for developers, yet OpenAI's pricing remains 2-3x higher than comparable alternatives like DeepSeek. This open-source proxy demonstrates how intelligent routing between multiple providers can achieve an 89% cost reduction while maintaining performance, revealing a critical market inefficiency where most teams overprovision by using expensive models for routine tasks. The pattern is replicable and signals a fundamental shift in AI infrastructure cost strategies.