Moonshot releases Kimi K3.1 Pro and says it cut its hacking skills

Moonshot has released Kimi K3.1 Pro, an upgraded version of its open-weight Kimi K3, with full weights due by 4 November. It says the model nearly matches Claude Opus 5.5 on a coding test. Moonshot also says it removed hacking-related training data to limit misuse of the open release.