Towards Data Science
Friday, May 29, 2026
Emmimal P Alexander
RAG Is Burning Money — I Built a Cost Control Layer to Fix It
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Summary
Most RAG systems are optimized for answer quality, not cost—and that blind spot gets expensive fast.
In this article, I break down a production-ready cost control layer combining semantic caching, query routing, token budgeting, and circuit breaking, achieving an 85% reduction in LLM costs withou...
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