Moonshot rolls out Kimi K3.1 Pro: 3T params, 1M context, plus 2-3x faster Highspeed variant
cedric_chee · x · 2026-10-24
Kimi K3.1 Pro is now fully rolled out in Kimi Code as the first model of the K3.1 series and Moonshot's most capable 3T-class model to date:
- K3.1 Pro: 3T parameters, 1M context window, with substantial gains in coding, 3D creation, and financial research/modeling. Thinking mode only — requests with thinking disabled are rejected.
- K3.1 Pro Highspeed: identical capabilities at roughly 2–3x the output speed.
- Usage guidance: don't switch to the new models mid-session from K3/K2.8 Preview/K2.7 Code Highspeed sessions (degrades output quality and cache hits — start a new session instead), and prefer the native Kimi Coding Plan APIs since protocol translation via proxy tools can cause erratic model behavior.
Related event: Kimi K3.1 Pro Rolls Out: 3T-Parameter Flagship with 1M Context(12 posts)→
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