Kimi K3.1 Pro arrives on Moonshot's model lineup

Moonshot AI's Kimi blog lists Kimi K3.1 Pro alongside a fast-moving release history: Kimi K3 in July 2026, PerceptionBench, K2.6, Agent Swarm, WorldVQA, and K2.5, all within months. Earlier work includes K2 Thinking, Kimi-Researcher, Kimi-Audio, Kimina-Prover, and research on Muon scaling and MoBA block attention for long-context LLMs.