Kimi Publishes K3.1 Pro Tech Blog Detailing Large-Scale Joint RL Training Stack
Kimi_Moonshot · x · 2026-10-24
Kimi's thread links the K3.1 Pro tech blog: K3.1 Pro is a post-trained version of Kimi K3 with substantially larger post-training compute, enabling large-scale joint RL across hundreds of downstream domains. The team optimized every layer of the stack — RL framework, long-context inference, training efficiency, sandbox infrastructure, rollout scheduling, and a shared environment-quality platform — so each increment of RL compute yields stable, predictable returns. It also reports 61.2% on the internal Kimi Code Bench 3.0 Long-horizon, up from K3's 55.95%.
Related event: Kimi K3.1 Pro Tech Blog Details Large-Scale Cross-Domain RL Training(4 posts)→
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