Lee Robinson

Stronger Models Improve the Judges and Rewards Training Their Successors

Cursor’s Lee Robinson argues that progress in AI-native software development depends less on any single training run than on a system that turns product failures into harder evaluations, targeted reward signals, and successive model updates. At Cursor, user feedback and agent usage feed an outer loop that identifies failures, while an inner loop builds the tasks, data, and training methods to address them. Stronger top-level models can then serve as judges and reward models for later runs, making the training machinery itself more capable.