Route easy calls to a cheap model, hard ones to a premium model — see the blended cost.
Routing is the biggest lever on an LLM bill because the traffic mix is lopsided — most requests are easy. Send those cheap, reserve the frontier model for the hard tail. Compare models on the AI cost calculator.
Free AI model-router cost calculator — split traffic between a cheap and a premium model to see blended monthly cost and savings.
Sending each request to the cheapest model that can handle it — small model for easy calls, frontier model for hard ones. A classifier or rules decide, and the blended cost lands far below all-premium.
Often 50–80%, since most real traffic is routine. The saving depends on how much you can safely send to the cheap model without hurting quality.
Cost at different volumes:
| Volume | Monthly | Yearly |
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