Cursor Router: Intelligent Model Routing Delivers Frontier Performance at 60% Lower Cost

What's new

• Cursor Router: automatically classifies each coding request by task type and complexity, then routes it to the most cost-effective capable model
• Three optimization modes: Intelligence (frontier quality), Balance (strong quality for daily use), Cost (good quality while optimizing token spend)
• Grok 4.5 in Cursor: jointly trained mixture-of-experts model from Cursor/SpaceX AI for long-running software, data, finance, and legal tasks
• Plans before starting: Cursor now shows a plan before beginning work so users can redirect early

Why it's worth attention

In A/B tests across millions of requests, Cursor Router delivered frontier-quality performance at 60% cost savings. Enterprise early-access customers saw 30–50% lower costs.

How to try it

Set Cursor to Auto mode — Router is active by default. Change the optimization mode in AI settings.