Kimi K3.1 Pro solved 81% of Moonshot AI's internal xdev-bench-hard exploit tasks, against 90.5% for a version trained without the cyber-data removal

Moonshot AI's launch post for Kimi K3.1 Pro, a 3T-class model with a 1-million-token context window and a faster Highspeed variant, with benchmark results and an account of removing cyberattack-related training data before the open-weights release.