Moonshot AI’s late-October 2026 launch of Kimi K3.1 Pro—a post-trained upgrade to the July 2026 Kimi K3 2.8-trillion-parameter MoE model with 1M-token context—has anchored low market-implied odds for a 2026 Kimi K4 release. The K3.1 Pro improves coding agents, 3D modeling, financial analysis, and agentic tasks without introducing a new base architecture, aligning with Moonshot’s pattern of frequent point releases over major generational jumps. Persistent U.S. export controls on advanced Nvidia Blackwell GPUs, combined with the absence of any official K4 announcement, model card, API listing, or Hugging Face repository, reinforce trader consensus favoring a 2027 debut. The November 4, 2026 open-weights release for K3.1 Pro offers a near-term signal of development velocity, while any credible reporting on expanded training clusters could shift near-term probabilities.