Cursor drops Composer 2.5 with 25x more synthetic training tasks
Cursor just launched Composer 2.5, a major upgrade to its flagship AI coding agent built on Moonshot's open-source Kimi K2.5 checkpoint. The update scales synthetic training tasks by 25x and introduces targeted textual feedback to fix localized RL errors during marathon coding sessions. Why it matters: Cursor is solving agent reliability on complex real-world codebases while quietly partnering with SpaceXAI to train an even larger model.