opus: The Intelligent Claude Routing Layer Built for Speed

opus uses a three-tier Haiku→Sonnet→Opus routing strategy to automatically pick the right model for each task — cutting costs without sacrificing capability.

TL;DR

Intelligent Claude model routing with Haiku → Sonnet → Opus progression. The right model for every task at the lowest cost.

10-Second Pitch

What it does: Classifies prompts by complexity, routes to the cheapest capable model
Key win: Most tasks don't need Opus — opus makes sure you only pay for what you use
Best for: Production Claude deployments where cost matters

Setup

bash

pip install opus-router
opus route "What's the capital of Japan?"     # → Haiku (trivial)
opus route "Debug this race condition"         # → Sonnet (medium)
opus route "Design a consensus algorithm"     # → Opus (complex)

Pros / Cons

Pros	Cons
Automatic cost optimization	Classification isn't perfect
Preserves quality on hard tasks	Still need human review for critical outputs
Simple drop-in installation

Verdict

opus is the routing layer your Claude deployment was missing. The difference between Haiku and Opus is 100x in cost — and opus makes sure you only pay premium prices when you actually need them.