Cursor has built a machine for not needing the best model. The Router sends hard work to frontier models and everything else to efficient ones, delivering frontier quality at roughly 60% lower cost. The swarm research pairs a frontier planner with Composer workers and hits up to 100% on complex tasks like the SQLite rebuild ...

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Link :
https://www.nextbigfuture.com/2026/07/grok-4-5-ranks-10th-cursor-is-at-4-billion-arr-thats-not-a-contradiction.html