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AI/ML2026-04-28

smart-model-switching: Automatic Claude Model Selection That Cuts Your Bill in Half

Auto-route tasks to the cheapest Claude model that works correctly. Haiku for simple, Sonnet for medium, Opus for complex. No manual routing required.
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Install command
$ mrt install ai
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smart-model-switching: Automatic Claude Model Selection That Cuts Your Bill in Half

TL;DR

Auto-route tasks to the cheapest Claude model that works correctly. Three-tier progression: Haiku → Sonnet → Opus. Classify before responding.

10-Second Pitch

  • **What it does:** Inspects each task, picks the right Claude model tier automatically
  • **Key win:** Haiku handles ~60% of typical queries at ~1/20th Sonnet cost
  • **Best for:** Any product using Claude API at volume

Setup

pip install claude-model-router

claude-router configure --models haiku sonnet opus

claude-router route "Summarize this document" # → Haiku

claude-router route "Write a full REST API spec" # → Sonnet

claude-router route "Design a fault-tolerant distributed system" # → Opus

Pros / Cons

ProsCons
40-60% cost reduction on typical AI workloadsRequires monitoring to tune classification
Automatic escalation for hard problemsSome complex tasks may need manual model pick

Verdict

The era of picking one Claude model and using it for everything is over. `smart-model-switching` handles the routing for you — install it and watch the API bill drop.

Drop-in for existing API integrations