October 27, 2026 · 5 min read
Kimi K3.1 Pro: Moonshot's near-frontier coding model, explained
Moonshot's Kimi K3.1 Pro scores 55 on Artificial Analysis, behind only Claude Opus 5.5, and promises open weights by Nov 4. What it is, how to call it from an app (thinking always on, sampling fixed), whose benchmarks those are, and what is still unknown.



